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| Registros recuperados: 40 | |
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| 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 |
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| 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 |
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| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/525390 |
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| 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 |
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| Ano: 1980 |
URL: http://www.repository.naturalis.nl/record/533274 |
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| 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 |
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| Ano: 1984 |
URL: http://www.repository.naturalis.nl/record/525788 |
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| 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 |
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| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/524994 |
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| 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 |
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| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/524745 |
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| 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 |
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| 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 |
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| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/525610 |
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| 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 |
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| Ano: 1993 |
URL: http://www.repository.naturalis.nl/record/533041 |
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| 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 |
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| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/525585 |
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| 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 |
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| 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 |
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| Ano: 1985 |
URL: http://www.repository.naturalis.nl/record/533443 |
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| 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 |
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| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/525232 |
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| 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 |
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| Ano: 1971 |
URL: http://www.repository.naturalis.nl/record/525269 |
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| Registros recuperados: 40 | |
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