Consulta: creatorFacets:"Baas, P."
Registros recuperados: 40
Data/hora: 12/06/2024 10:07:15

A search for phylogenetically informative wood characters within Lecythidaceae s.l.
Provedor de dados: 16
Autores: Lens, F.; Baas, P.; Jansen, S.; Smets, E.
The wood structure of 71 species representing 24 genera of the pantropical Lecythidaceae s.l., including the edible Brazil nuts (Bertholletia excelsa) and the spectacular cannon-ball tree (Couroupita guianensis), was investigated using light and scanning electron microscopy. This study focused on finding phylogenetically informative characters to help elucidate any obscure evolutionary patterns within the family. The earliest diverging subfamily Napoleonaeoideae has mixed simple/scalariform vessel perforations, scalariform vessel-ray pitting, and high multiseriate rays, all features that are also present in Scytopetaloideae. The wood structure of Napoleonaea is distinct, but its supposed close relative Crateranthus strongly resembles Scytopetaloideae. The...
Tipo: Article / Letter to the editor
Palavras-chave: Ericales; Lecythidaceae s.l.; Lecythidaceae s.s.; Napoleonaeaceae; Scytopetalaceae; Systematic wood anatomy; 42.48.
Ano: 2007
URL: http://www.repository.naturalis.nl/record/422216

A leaf anatomical contribution to the classification of the Linaceae complex
Provedor de dados: 16
Autores: Welzen, P.C. van; Baas, P.
The leaf anatomy of the Linaceae complex (Linaceae s.s., Hugoniaceae, Ixonanthaceae, Humiriaceae and Erythroxylaceae) and putative allies ( Ctenolophon, Lepidobotrys, Irvingiaceae) is surveyed, mostly on the basis of original observations (72 specimens, 27 genera), partly from data in the literature. Diversity in stomatal type, midrib and petiole vascularisation, sclerenchyma support, foliar sclereids, mucilage cells, secretory cavities, and cristarque cells provide evidence in favour of a separate family status of the members of the Linaceae complex. Allantospermum and Cyrillopsis are best accommodated in the Ixonanthaceae. Irvingiaceae (often treated in or near Simaroubaceae) show similarities with the Linaceae complex, albeit more closely to the...
Tipo: Article / Letter to the editor
Ano: 1984
URL: http://www.repository.naturalis.nl/record/526014

Vegetative anatomy and the affinities of Aquifoliaceae, Sphenostemon, Phelline, and Oncotheca
Provedor de dados: 16
Autores: Baas, P.
The anatomy of leaf, node, twig, and bark of Ilex, Nemopanthus, Oncotheca, Phelline, and Sphenostemon is described, together with the wood anatomy of the 4 latter genera. Several characters are recorded for the first time. The systematic value of some anatomical characters for judging the wider affinities of the genera involved is discussed. Considering these characters together with macromorphological and palynological data, it is concluded that Phelline and Sphenostemon each merit family status, and have affinities with Aquifoliaceae and Icacinaceae of the Celastrales. Oncotheca shows no affinities with the families of Celastrales, and may possibly have its closest relatives in Theales, but this problem has not been studied in great detail. The leaf...
Tipo: Article / Letter to the editor
Ano: 1975
URL: http://www.repository.naturalis.nl/record/525243

Wood anatomical variation in relation to latitude anf altitude
Provedor de dados: 16
Autores: Graaff, N.A. van der; Baas, P.
The wood anatomical variation within 17 eurytherm hardwood genera in relation to altitude and latitude has been studied using wood samples from 52 species. With increasing latitude a miniaturization of secondary xylem elements (shorter vessel members, narrower vessels, shorter and sometimes narrower fibres, lower rays) is reported, together with an increase in vessel frequency and frequency and expression of helical thickenings to the vessel walls. Increasing altitude has similar but much weaker effects, and none on vessel grouping or helical thickenings. The number of bars per perforation plate in genera with partly or exclusively scalariform perforations is in general not correlated with altitude or latitude. In the softwood genus Podocarpus tracheid...
Tipo: Article / Letter to the editor
Ano: 1974
URL: http://www.repository.naturalis.nl/record/525359

Variation in xylem structure from tropics to tundra: Evidence from vestured pits
Provedor de dados: 16
Autores: Jansen, S.; Baas, P.; Gasson, P.; Lens, F.; Smets, E.
Bordered pits play an important role in permitting water flow among adjacent tracheary elements in flowering plants. Variation in the bordered pit structure is suggested to be adaptive in optimally balancing the conflict between hydraulic efficiency (conductivity) and safety from air entry at the pit membrane (air seeding). The possible function of vestured pits, which are bordered pits with protuberances from the secondary cell wall of the pit chamber, could be increased hydraulic resistance or minimized vulnerability to air seeding. These functional hypotheses have to be harmonized with the notion that the vestured or nonvestured nature of pits contains strong phylogenetic signals (i.e., often characterize large species-rich clades with broad ecological...
Tipo: Article / Letter to the editor
Palavras-chave: Xylem structure; Vestured pits; Scalariform perforation plates; Simple perforation plates; Hydraulic system; Drought stress; 42.42.
Ano: 2004
URL: http://www.repository.naturalis.nl/record/423503

Review
Provedor de dados: 16
Autores: Baas, P.
With over 80 original publications on foliar sclereids, published in the last 30 years, Dr. T. Ananda Rao is a well qualified author for a compendium on the subject. The book consists of a general and a special part. The former includes a historical and methodological introduction, a major chapter on the morphological classification of the various types of sclereids and tracheoids and their distribution patterns, and sections on their taxonomic significance as well as their ontogeny and (presumed) functions. The special part is an ‘abstract review’ of literature records and original observations on 121 families of angiosperms, arranged according to the Takhtajan system. The book is richly illustrated with line drawings as well as numerous halftone plates....
Tipo: Article / Letter to the editor
Ano: 1993
URL: http://www.repository.naturalis.nl/record/525546

Vessel grouping patterns in subfamilies Apocynoideae and Periplocoideae confirm phylogenetic value of wood structure within Apocynaceae
Provedor de dados: 16
Autores: Lens, F.; Endress, M.E.; Baas, P.; Jansen, S.; Smets, E.; , D.
This study contributes to our understanding of the phylogenetic signifi cance and major evolutionary trends in the wood of the dogbane family (Apocynaceae), one of the largest and economically most important angiosperm families. Based on LM and SEM observations of 56 Apocynoideae species — representing all currently recognized tribes — and eight Periplocoideae, we found striking differences in vessel grouping patterns (radial multiples vs. large clusters) between the mainly nonclimbing apocynoid tribes (Wrightieae, Malouetieae, Nerieae) and the climbing lineages (remaining Apocynoideae and Periplocoideae). The presence of large vessel clusters in combination with fibers in the ground tissue characterizing the climbing Apocynoideae and Periplocoideae...
Tipo: Article / Letter to the editor
Palavras-chave: Apocynaceae; Apocynoideae; APSA clade; Climbing vs. nonclimbing anatomy; Periplocoideae; Systematic wood anatomy; Tribal classification; 42.58.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/424670

Reviews
Provedor de dados: 16
Autores: Baas, P.
This volume on leaf venation patterns is too modest in its title. Not only the Combretaceae are treated, but not less than eleven other families: Lecythidaceae, Barringtoniaceae, Foetidiaceae, Napoleonaceae, Rhizophoraceae, Anisophylleaceae, Lythraceae, Sonneratiaceae, Oliniaceae, Punicaceae, and Onagraceae. Thus, together with the earlier volumes on Myrtaceae and Melastomataceae plus Memecylaceae, the present book effectively completes the venadon survey of the order Myrtales in its widest possible circumscription. Lecythidaceae and Rhizophoraceae and their satellites do not fit well into the order. Altogether the leaves of 479 species are described and pictured, resulting in a wealth of welcome descriptive information. Criticisms voiced about the earlier...
Tipo: Article / Letter to the editor
Ano: 1992
URL: http://www.repository.naturalis.nl/record/525478

The wood anatomical range in Ilex (Aquifoliaceae) and its ecological and phylogenetic significance
Provedor de dados: 16
Autores: Baas, P.
The wood anatomy of 81 species of Ilex is described in detail. The wood anatomical range encountered is presented in a generic description (p. 196). Data on ontogenetic changes in vessel member length and number of bars per perforation are given for three species. The great amount of variation in mainly quantitative but also in some qualitative features is hardly or not related with subgeneric classification but with latitudinal and altitudinal distribution. In both the northern and southern hemisphere and in both the Old and New World, temperate and subtropical species are characterized by conspicuous growth rings, numerous narrow vessels, relatively short vessel members and few bars per perforation plate, conspicuous spiral thickenings on both vessel and...
Tipo: Article / Letter to the editor
Ano: 1973
URL: http://www.repository.naturalis.nl/record/525232

Systematic leaf anatomy of Baccaurea, Distichirhops, and Nothobaccaurea (Euphorbiaceae)
Provedor de dados: 16
Autores: Bodegom, S.; Haegens, R.M.A.P.; Heuven, B.J. van; Baas, P.
The leaf anatomical diversity of the genera Baccaurea Lour. (43 species), Distichirhops Haegens (3 species) and Nothobaccaurea Haegens (2 species) (Euphorbiaceae) is described. Two species of Aporosa and three species of Maesobotrya were examined for comparison. The following characters are important for the delimitation of species: hair types, the position of the glandular areas on the leaf margin, the hairiness and size of the glandular areas, the number of epidermal layers, the presence of (mucilage) idioblasts in the epidermis, the presence of palisade parenchyma above the vascular bundles, and the birefringence of the spongy parenchyma cell walls. However, leaf anatomy did not yield characters for distinction between the five genera studied. Phenetic...
Tipo: Article / Letter to the editor
Palavras-chave: Baccaurea; Distichirhops; Maesobotrya; Nothobaccaurea; Euphorbiaceae; Hairs; Leaf anatomy; Leaf glands; Systematics.
Ano: 2001
URL: http://www.repository.naturalis.nl/record/525184

Reviews
Provedor de dados: 16
Autores: Bourdy, G.; Veldkamp, J.F.; Baas, P.; Veldkamp, J.F.; Veldkamp, J.F.; Steenis, C.G.G.J. van; Noteboom, H.P.; Kramer, K.U.; Veldkamp, J.F.; Balgooy, M.M.J. van; Noteboom, H.P.; Noteboom, H.P.; Geesink, R.; Steenis, C.G.G.J. van; Veldkamp, J.F.; boom, H.P. Noote-; Steenis, C.G.G.J. van; Noteboom, H.P.; Steenis, C.G.G.J. van; Steenis, C.G.G.J. van; Noteboom, H.P.
BOURDY, G. Une approche de la médicine traditionnelle à Bukittinggi (Sumatra Quest). D.E.A. d’ecologie U.S.T.L. Montpellier. 1984. 55 pp. The results presented in this paper are based one some field work conducted in the Minangkabau region of Bukittinggi (Western Sumatra) during February and March 1984. Traditional medicine is approached through the description of medicinal plants, the way they are utilized, and the people who gather and prescribe them. Data have been collected while interviewing the ’dukuns’ (native doctors). For each medicinal plant synonyms, vernacular names in Bahasa and Minangkabau are given. Voucher specimens of 69 specimens of such medicinal plants were collected and are deposited at MPU.
Tipo: Article / Letter to the editor
Ano: 1985
URL: http://www.repository.naturalis.nl/record/533443

In Memoriam H. O. Sleumer (1906—1993)
Provedor de dados: 16
Autores: Wilde, W.J.J.O. de; Baas, P.
On October 1st, 1993 Professor Dr. Hermann Otto Sleumer died at the age of 87, after a short illness. His ashes have been interred at Liederbach (near Kirchberg), Germany. Dr. Sleumer had been our colleague at the Rijksherbarium and eminent contributor to Flora Malesiana for many years. He generously shared his vast knowledge and experience with many of us. For younger botanists the many anecdotes and intimate stories he indulged in telling about colleagues he had known, especially from the Englerian circles in Berlin, were always an enriching and entertaining experience.
Tipo: Article / Letter to the editor
Ano: 1994
URL: http://www.repository.naturalis.nl/record/525765

In Memoriam professor A.J.G.H. Kostermans (1906—1994)
Provedor de dados: 16
Autores: Wilde, W.J.J.O. de; Baas, P.
With the death of Andre (‘Dok’) Kostermans, at the age of 88, a truly extraordinary personality has passed away. Dok had bravely borne the inconvenience of an increasing number of ailments associated with high age, such as poor eyesight, and had just recovered from a broken hip when his heart condition (angina pectoris) once more became acute. He passed away on 10 July, 1994 in a hospital in Jakarta where he had been transported one day before from his residence at Pasir Muncang, Gadok, some 15 km out of Bogor. His remains have been interred in the small historical cemetery within the Kebun Raya, by special permission of the Government of Indonesia. Kostermans can be ranked as one of the most important post-war Southeast Asian botanists and was the leading...
Tipo: Article / Letter to the editor
Ano: 1995
URL: http://www.repository.naturalis.nl/record/525585

Some functional and adaptive aspects of vessel member morphology
Provedor de dados: 16
Autores: Baas, P.
The hypothesis of functionally adaptive diversification of wood structure in the course of evolution as advanced by Carlquist is critically tested for vessel member length and type of perforation plate. The functional significance of within-tree variation in vessel member morphology is discussed first, and a criticism of Philipson &amp; Butterfield’s theory for explaining classical length-on-age curves for fusiform initial length is given. At the genus and family level examples are cited which contradict the hypothesis that specialization of the perforation plate has a strong selective advantage for the occupation of more xeric environments or for high conductive rates. Other examples, however, seem to support this. The functional interpretation of...
Tipo: Article / Letter to the editor
Ano: 1976
URL: http://www.repository.naturalis.nl/record/508223

Anatomical contributions to plant taxonomy I. Floral and vegetative anatomy of Eliaea from Madagascar and Cratoxylum from Indo-Malesia (Guttiferae)
Provedor de dados: 16
Autores: Baas, P.
The floral and vegetative anatomy of the closely allied guttiferous genera Cratoxylum (Indo-Malesia) and Eliaea (Madagascar) is described. Although the two taxa have many features in common, differences are substantial enough to recognize them as distinct genera, as appears from the following survey: Cratoxylum Ovary with 12 or more ovules Ovary with 3(or 4) incomplete true septa Styles and filaments glabrous Secondary xylem with scarcely pitted fibres Vessels solitary and in radial multiples Silica bodies present in ray cells of wood Eliaea Ovary with 6(—8) ovules Ovary with 6(or 8) incomplete septa, three being true, three false Styles and filaments mostly villous Secondary xylem with densely pitted fibretracheids Vessels almost exclusively solitary...
Tipo: Article / Letter to the editor
Ano: 1970
URL: http://www.repository.naturalis.nl/record/525720

Review
Provedor de dados: 16
Autores: Heel, W.A. van; Baas, P.
The intention of this serial of review papers covering the various branches of botany is firstly to offer the authors a freedom to express opinions and to speculate as widely as they dare upon future trends, and secondly to offer the classical- and modern-minded readers at least a possibility to dip into each other’s pages so that each may appreciate the other and learn ‘what it is all about’ (Preston, in the preface to Volume I). The present reviewers are engaged in the field of plant morphology and anatomy, to which the last paper of this volume belongs, namely the excellent contribution by P. B. Tomlinson on Monocotyledons (mainly arborescent forms). Tomlinson presents a lively picture of the ‘habit’, vascularization, inflorescence, etc. in these...
Tipo: Article / Letter to the editor
Ano: 1971
URL: http://www.repository.naturalis.nl/record/524849

Comparative anatomy of the Crypteroniaceae sensu lato
Provedor de dados: 16
Autores: Vliet, G.J.C.M. van; Baas, P.
The leaf, twig, and nodal anatomy of Alzatea, Axinandra, Crypteronia, Dactylocladus, and Rhynchocalyx is described in detail. This family, as newly delimited by Van Beusekom-Osinga and Van Beusekom, appears to be very heterogeneous, a conclusion supported by the wood anatomical diversity reported in another paper. The nodes may be simply unilacunar, unilacunar with a complete girdling trace, of the common gap (or split lateral) plus median trace type, or trilacunar. Cortical bundles may be present in addition. Further diversity is present in e.g. cuticular texture, stomatal type, hypodermal development, arrangement of vascular bundles in petiole and midrib, mechanical support of the veins, the crystal complement, foliar sclereids, and cork origin....
Tipo: Article / Letter to the editor
Ano: 1975
URL: http://www.repository.naturalis.nl/record/524745

A note on stomatal types and crystals in the leaves of Melastomataceae
Provedor de dados: 16
Autores: Baas, P.
Original data on leaf crystals and stomatal types in 25 genera of Melastomataceae are presented, and discussed with reference to the classification of the family as modified by Van Vliet et al. (1981, this issue). The heterogeneity of the abolished subfamily Astronioideae is confirmed and a separation of Pternandra from the Astronieae is also justified on the basis of leaf anatomical data. The Astronieae are characterized by large styloids and predominantly anomocytic stomata; this combination of characters also occurs in part of the Melastomatoideae (especially the Miconieae). Most other Melastomatoideae are characterized by polocytic to diacytic stomata and druses. The subfamilies Memecyloideae and Crypteronioideae remain rather heterogeneous leaf...
Tipo: Article / Letter to the editor
Ano: 1981
URL: http://www.repository.naturalis.nl/record/524994

Ficus cornelisiana, a new species of Ficus subsection Urostigma (Moraceae) from the Sino-himalayan region
Provedor de dados: 16
Autores: Chantarasuwan, B.; Peng, Y.-Q.; Baas, P.; Rasplus, J.-Y.; Heuven, B.-J. van; Welzen, P.C. van.
A small fig tree has been misidentified as Ficus orthoneura for a long time. However, morphologically it is distinct from F. orthoneura and F. hookeriana. Typical are the ellipsoid, puberulous receptacle and caducous basal bracts. Leaf anatomy shows a multiple epidermis with the cells in the inner layer much larger than in the outer layer and thus both layers resemble an epidermis with a separate hypodermis. The abaxial cuticle is strongly sculptured, the palisade layer shows some long subdivided cells, and enlarged lithocysts are only present abaxially. Because of these differences we hereby describe it as a new species, named in honour of Cornelis (Cees) Berg: Ficus cornelisiana.
Tipo: Article / Letter to the editor
Palavras-chave: China; Ficus; Moraceae; New species; Vietnam.
Ano: 2014
URL: http://www.repository.naturalis.nl/record/524854

Comparative leaf anatomy of the Asiatic Myristicaceae
Provedor de dados: 16
Autores: Koster, J.; Baas, P.
The leaf anatomy of c. 60 species of the four Asiatic genera of the Myristicaceae (Gymnacranthera, Horsfieldia, Knema and Myristica) is described in detail. Myristicaceae have characteristic, uniseriate hairs, the cells of which have arms. The number of arms per cell and the relative length of the arms are important characters to separate the Asiatic genera. The hairs of Knema can be classified further into different types. Many species of Myristicaceae have a layer of cutinaceous, alveolar material overlying the cuticle proper on the abaxial leaf surface. In angiosperms such a layer was hitherto only reported for Winteraceae. Guard cells are often embedded in the subsidiary cells. The paracytic stomatal complex in Knema and Myristica is sunken and...
Tipo: Article / Letter to the editor
Ano: 1981
URL: http://www.repository.naturalis.nl/record/525087

Comparative leaf anatomy of Heisteria (Olacaceae)
Provedor de dados: 16
Autores: Baas, P.; Kool, R.
The leaf anatomy of all 33 species of Heisteria is described, based on a study of 143 specimens. There is a considerable amount of diversity in stomatal type (anisocytic, anomocytic, cyclocytic, laterocytic or paracytic), in occurrence and type of mesophyll sclereids, and of fibre bundles along the leaf margin. Outline and thickness of anticlinal epidermal cell walls, cuticle thickness, crystal complement, and stomatal size also vary, but often below the species level. The leaf anatomical diversity can be used for recognising 8 groups of varying distinctness in Heisteria. H. asplundii and H. skutchii with laterocytic stomata, and H. pentandra and H. scandens with paracytic stomata constitute the two most distinct infrageneric groups; the other six groups...
Tipo: Article / Letter to the editor
Ano: 1983
URL: http://www.repository.naturalis.nl/record/524600

Wood anatomy of  Rauvolfioideae (Apocynaceae): a search for meaningful non-DNA characters at the tribal level
Provedor de dados: 16
Autores: Lens, F.; Endress, M.E.; Baas, P.; Jansen, S.; Smets, E.
Wood anatomical studies in the economically important Apocynaceae or dogbane family are fragmentary. This study represents a first attempt to unravel the phylogenetic signifi cance and major evolutionary trends in the wood of the family, using existing and new microscopic wood observations within the large subfamily Rauvolfi oideae. On the basis of LM and SEM observations of 91 species representing all 10 currently recognized tribes, we found that most of the tribes are characterized by a unique combination of wood characters, such as vessel grouping, vessel element length, fi ber type, frequency of uniseriate rays, and fused multiseriate rays. Climbing rauvolfi oid taxa can generally be distinguished from erect species by their wider vessels, tendency to...
Tipo: Article / Letter to the editor
Palavras-chave: Apocynaceae; APSA clade; Climbing vs. nonclimbing habit; Rauvolfi oideae; Systematic wood anatomy; Tribal classification; 42.58.
Ano: 2008
URL: http://www.repository.naturalis.nl/record/424647

Botanical progress in the Tropenbos Kalimantan Project
Provedor de dados: 16
Autores: Keßler, P.J.A.; Baas, P.
During the last three years the Rijksherbarium/Hortus Botanicus (L) has been involved in the Tropenbos Kalimantan Programme, a co-operative programme between AFRD (Agency of Forest Research and Development, Indonesian Ministry of Forestry) and the ‘Tropenbos’ Foundation. The implementation of this programme is executed by AFRD and its institutes on the Indonesian side and the IBG-DLO (Instituut voor Bosbouw en Groenbeheer – Dienst Landbouwkundig Onderzoek), Wageningen, and L on the Dutch side. UNESCO-MAB has funded research in soil science. The programme is supported by the forestry state enterprises Inhutani I and II, and other concessionaires. A close co-operation exists with the Faculty of Forestry of the Mulawarman University, Samarinda. The research...
Tipo: Article / Letter to the editor
Ano: 1993
URL: http://www.repository.naturalis.nl/record/533041

On the 80th birthdays of Willem J.J.O. de Wilde and Brigitta E.E. Duyfjes
Provedor de dados: 16
Autores: Baas, P.; Veldkamp, J.F.; Welzen, P.C. van.
Tipo: Article / Letter to the editor
Palavras-chave: Wilde; J.J.O. de Duyfjes; Brigitta E.E.
Ano: 2016
URL: http://www.repository.naturalis.nl/record/611431

In memoriam Colin Ernest Ridsdale (18 January 1944 – 5 January 2017)
Provedor de dados: 16
Autores: Baas, P.; Pereira, J.T.; Wong, K.M.; Hovenkamp, P.H.; Keßler, P.J.A.; Newbery, D.M.
Tipo: Article / Letter to the editor
Ano: 2017
URL: http://www.repository.naturalis.nl/record/625331

The wood anatomy of the polyphyletic Icacinaceae s.l., and their relationships within asterids
Provedor de dados: 16
Autores: Lens, F.; Kårehed, J.; Baas, P.; Jansen, S.; Rabaey, D.; Huysmans, S.; Hamann, T.; Smets, E.
Wood samples from 53 species belonging to 41 genera of the Icacinaceae s.l. are investigated using light and scanning electron microscopy. The traditionally circumscribed Icacinaceae fall apart into four segregate families that are clearly nested within asterids, i.e., Icacinaceae s.str. (near or in Garryales), Cardiopteridaceae and Stemonuraceae (both Aquifoliales), and Pennantiaceae (Apiales). From a wood anatomical point of view, these families cannot easily be distinguished from each other. However, some features such as vessel distribution, perforation plate morphology, size and arrangement of vessel pits, fibre wall thickness, and the occurrence of cambial variants can be used to assign various species to one of the four families. The wood structure...
Tipo: Article / Letter to the editor
Palavras-chave: Cambial variants; Comparative wood anatomy; Garryales; Icacinaceae; LM; Oncotheca; SEM; 42.58.
Ano: 2008
URL: http://www.repository.naturalis.nl/record/424648

Phylogenetic and ecological signals in the wood of Spathelioideae (Rutaceae)
Provedor de dados: 16
Autores: Appelhans, M.S.; Heuven, B.J. van; Lens, F.; Baas, P.
Subfamily Spathelioideae of Rutaceae constitutes a well-supported early branching clade of eight small woody genera that were formerly assigned to five different Sapindalean/Rutalean families. This study brings together detailed wood anatomical information on all eight genera (for four the wood anatomy is described for the first time in detail). Wood anatomy strongly supports the inclusion of all Spathelioid genera in Rutaceae and underpins the molecular phylogeny with a set of interesting apomorphies at different nodes of the cladogram. The wood anatomy of Cneorum tricoccon with its semi-ring porosity, dendritic vessel pattern, vascular tracheids and helical vessel wall thickenings stands out in Spathelioideae. This wood anatomical syndrome is...
Tipo: Article / Letter to the editor
Palavras-chave: Cneorum; Dictyoloma; Harrisonia; Sohnreyia; Spathelia; Vessel grouping; Hydraulic safety; Prismatic crystals; Xylem rays; 42.48.
Ano: 2012
URL: http://www.repository.naturalis.nl/record/497323

The role of wood anatomy in phylogeny reconstruction of Ericales
Provedor de dados: 16
Autores: Lens, F.; Schönenberger, J.; Baas, P.; Jansen, S.; Smets, E.
The systematic significance of wood anatomical characters within Ericales is evaluated using separate and combined parsimony analyses including 23 wood characters and 3945 informative molecular characters. Analyses of wood features alone result in poorly resolved and conflicting topologies. However, when pedomorphic character states are coded as inapplicable, the combined bootstrap topology results in an increase of resolution and support at most deeper nodes compared with the molecular analyses. This suggests that phylogenetic information from the limited number of morphological characters is not completely swamped by an overwhelming amount of molecular data. Based on the morphology of vessels and fibers, and the distribution of axial parenchyma, two...
Tipo: Article / Letter to the editor
Palavras-chave: Anatomy; Phylogeny; Ericales; 42.48.
Ano: 2007
URL: http://www.repository.naturalis.nl/record/422235

In Memoriam Ding Hou (1921 – 2008)
Provedor de dados: 16
Autores: Baas, P.; Adema, F.
Tipo: Article / Letter to the editor
Ano: 2008
URL: http://www.repository.naturalis.nl/record/525227

On Max van Balgooy’s 80th birthday
Provedor de dados: 16
Autores: Baas, P.; Roos, M.C.; Welzen, P.C. van.
Tipo: Article / Letter to the editor
Ano: 2012
URL: http://www.repository.naturalis.nl/record/524451

Anatomical contributions to plant taxonomy II. The affinities of Hua Pierre and Afrostyrax Perkins et Gilg
Provedor de dados: 16
Autores: Baas, P.
Vegetative anatomy, fruit and seed structure, and pollen morphology of Hua and Afrostyrax (tropical West and Central Africa) are described in detail. The two genera have many anatomical characters in common (see anatomical family diagnosis on p. 182) but are sufficiently different from other families to justify the existence of the family Huaceae. Some characteristic features are discussed and the results of comparisons with representatives of about 50 families are reported. Afrostyrax is not related to Styracaceae, nor is Hua to Erythroxylaceae as had been suggested in the past. Sterculiaceae and Bombacaceae appear to have the highest number of characters in common with Huaceae of all the families compared. This supports the inclusion of Huaceae in the...
Tipo: Article / Letter to the editor
Ano: 1972
URL: http://www.repository.naturalis.nl/record/525390

Comparative leaf anatomy of Trigonobalanus Forman (Fagaceae)
Provedor de dados: 16
Autores: Baas, P.
The leaf anatomy of the recently discovered Neotropical species Trigonobalanus excelsa is described and compared with that of the Old World species T. doichangensis and T. verticillata. Trigonobalanus excelsa appears to be very similar in its leaf anatomy to T. verticillata from Borneo and Sumatra.
Tipo: Article / Letter to the editor
Ano: 1982
URL: http://www.repository.naturalis.nl/record/525620

Vegetative anatomy and taxonomy of Berberidopsis and Streptpthamnus (Flacourtiaceae)
Provedor de dados: 16
Autores: Baas, P.
The leaf and twig anatomy of Berberidopsis and Streptothamnus are described in detail. The two genera are very similar in most aspects of their vegetative anatomy and together take a very isolated position in the Flacourtiaceae on account of their xylem anatomy and stomatal type. Differences in indumentum, crystal complement and epidermal cell morphology (whether or not papillate) support the distinction of Streptothamnus moorei from Berberidopsis sensu Veldkamp, i.e., including Berberidopsis corallina and B. beckleri (formerly Streptothamnus beckleri).
Tipo: Article / Letter to the editor
Ano: 1984
URL: http://www.repository.naturalis.nl/record/525788

Preface
Provedor de dados: 16
Autores: Baas, P.; Bolton, A.J.; Catling, D.M.
This book contains the proceedings of the Anglo-Dutch wood anatomy meeting organized by the Materials Section of the Royal Microscopical Society at Oxford and Kew from 5th to 8th April 1976. In fact, it contains more than just the written record of the papers delivered during the meeting. The largely original studies of most authors have been presented here as comprehensive publications which contain much more information than could have been conveyed during the lectures. The wood anatomists contributing to this issue represent a diversity of specializations, this would seem to justify the somewhat pretentious title: ‘Wood Structure in Biological and Technological Research’. It is hoped that this book will help to bridge the gap between students of wood...
Tipo: Article / Letter to the editor
Ano: 1976
URL: http://www.repository.naturalis.nl/record/508239

Traditional medicinal plants in Ben En National Park, Vietnam
Provedor de dados: 16
Autores: Van Sam, Hoang; Baas, P.; Keßler, P.J.A.
This paper surveys the medicinal plants and their traditional use by local people in Ben En National Park, Vietnam. A total of 230 medicinal plant species (belonging to 200 genera and 84 families) is used by local people for treatment of 68 different diseases. These include species that are collected in the wild (65%) as well as species grown in home gardens. Leaves, stems and roots are most commonly used either fresh or dried or by decocting the dried parts in water. Women are mainly responsible for health care, they have better knowledge of medicinal plants than men, and also collect them more than men at almost every age level. The indigenous knowledge of traditional medicinal plants may be rapidly lost because 43% of the young generation do not know or...
Tipo: Article / Letter to the editor
Palavras-chave: Ben En National Park; Traditional medicinal plants; Disease treatment; Conservation.
Ano: 2008
URL: http://www.repository.naturalis.nl/record/525136

In memoriam Jan-Frits Veldkamp: (31 March 1941 – 12 November 2017)
Provedor de dados: 16
Autores: Baas, P.; Hovenkamp, P.H.
Tipo: Article / Letter to the editor
Palavras-chave: Memoriam Veldkamp; Jan-Frits.
Ano: 2018
URL: http://www.repository.naturalis.nl/record/645230

Hans Nooteboom 80 years
Provedor de dados: 16
Autores: Baas, P.; Hovenkamp, P.H.; Veldkamp, J.F.
Tipo: Article / Letter to the editor
Ano: 2014
URL: http://www.repository.naturalis.nl/record/524917

Comparative leaf anatomy of Kokoona and Lophopetalum (Celastraceae)
Provedor de dados: 16
Autores: Jansen, W.T.; Baas, P.
The leaf anatomy of Kokoona and Lophopetalum is described in detail. Separation of the two genera as effectuated by Hou (1963) is supported by differences in vascular anatomy of the distal end of the petiole, which is invariably more complex in Lophopetalum than in Kokoona. Other differential characters (p. ooo) only apply to part of the species of Lophopetalum. As based on leaf anatomy it is impossible to define groups of closely related species within the genera because of a lack of mutual correlation between the different leaf anatomical characters. Lophopetalum in particular shows some striking anatomical features such as a very variable and complex arrangement of vascular tissue in petiole and midrib, complex types of cyclocytic and anisocytic...
Tipo: Article / Letter to the editor
Ano: 1973
URL: http://www.repository.naturalis.nl/record/525610

Review
Provedor de dados: 16
Autores: Baas, P.
This is the fifth volume in the series of reference books on the anatomy of the Monocotyledons edited by the former Keeper of the Jodrell Laboratory at Kew, Dr. C. R. Metcalfe. It is the second volume of which he is both the author and the editor, his first contribution being volume I on the Gramineae. The book starts with an introductory part with notes on techniques and materials, general considerations on morphology and anatomy of the family, and a discussion of the taxonomic implications of the anatomical findings. The bulk consists of descriptions of leaf, culm, rhizome, and root anatomy of 280 species from 90 genera. For each genus data from literature have been abstracted in a special section by Miss Mary Gregory. Taxonomic notes are also given for...
Tipo: Article / Letter to the editor
Ano: 1971
URL: http://www.repository.naturalis.nl/record/525269

New journals
Provedor de dados: 16
Autores: Baas, P.
IAWA Bulletin, New Series. Quarterly periodical of the International Association of Wood Anatomists. Annual subscriptions Dfl. 40.00 (Dfl. 30.00 for personal members of IAWA). Volume 1, 1980. From its foundation in 1931 the International Association of Wood Anatomists has promoted international contacts through the publication of News Letters, which were later transformed into a News Bulletin, also containing review articles. From 1970 onwards a more pretentious IAWA Bulletin made its appearance, which not only aimed at publishing notes, requests and review articles, but also original scientific publications. The latter category increased in relative importance, and forced the editors to change from the large, yet rather unprofessional magazin size to that...
Tipo: Article / Letter to the editor
Ano: 1980
URL: http://www.repository.naturalis.nl/record/533274