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| Lens, F.; Gasson, P.; Smets, E.; Jansen, S.. |
| The wood anatomy of 16 of the 37 genera within the epacrids (Styphelioideae, Ericaceae s.l.) is investigated by light and scanning electron microscopy. Several features in the secondary xylem occur consistently at the tribal level: arrangement of vessel‐ray pits, distribution of axial parenchyma, ray width, and the presence and location of crystals. The primitive nature of Prionoteae and Archerieae is supported by the presence of scalariform perforation plates with many bars and scalariform to opposite vessel pitting. The wood structure of Oligarrheneae is similar to that of Styphelieae, but the very narrow vessel elements, exclusively uniseriate rays and the lack of prismatic crystals in Oligarrheneae distinguish these two tribes. The secondary xylem of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Ecological wood anatomy; Epacrids; Ericaceae s.l.; Styphelioideae; Systematic wood anatomy; 42.56. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/431740 |
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| Welle, B.J.H. ter; Koek-Noorman, J.; Topper, S.M.C.. |
| The wood anatomy of the genera of the tribe Moreae with urticaceous stamens, viz. Broussonetia, Madura s.l. (including Cardiogyne, Chlorophora, and Cudrania), Malaisia, Milicia, Morus, Olmedia, Pachytrophe, Plecospermum, Sloetiopsis, Streblus s.l. (including Paratrophis, Phyllochlamys, Pseudostreblus, and Sloetia), and Trophis s.l.(including Calpidochlamys and Maillardia), is described in detail. Separate descriptions have been made for sections and/or subgenera to facilitate the discussion about the generic delimitations made by several taxonomists. The following generic combinations previously proposed by taxonomists are supported by wood anatomical features: Broussonetia + Allaeanthus: Maclura + Chlorophora + Cardiogyne + Cudrania + Plecospermum. The... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Moraceae; Moreae; Urticales; Systematic wood anatomy. |
| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/535270 |
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| Lens, F.; Jansen, S.; Robbrecht, E.; Smets, E.. |
| The Vanguerieae is a tribe consisting of about 500 species ordered in 27 genera. Although this tribe is mainly represented in Africa and Madagascar, Vanguerieae also occur in tropical Asia, Australia, and the isles of the Pacific Ocean. This study gives a detailed wood anatomical description of 34 species of 15 genera based on LM and SEM observations. The secondary xylem is homogeneous throughout the tribe and fits well into the Ixoroideae s.l. on the basis of fibre-tracheids and diffuse to diffuse-in-aggregates axial parenchyma. The Vanguerieae include numerous geofrutices that are characterised by massive woody branched or unbranched underground parts and slightly ramified unbranched aboveground twigs. The underground structures of geofrutices are not... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Vanguereae; Rubiaceae; Systematic wood anatomy; Geofrutex; 42.58. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/423793 |
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| Jansen, S.; Lens, F.; Ntore, S.; Piesschaert, F.; Robbrechf, E.; Smets, E.. |
| The secondary xylem of Craterispermeae, Coussareeae, Morindeae s.str., Prismatomerideae, Pauridiantheae, Urophylleae, and Triainolepideae (Rubiaceae, Rubioideae) is described and illustrated in detail. Genera that were previously placed in the Morindeae or Psychotrieae such as Damnacanthus, Lasianthus, Saldinia, and Trichosfachys are also included. Wood anatomical characters are compared with recent phylogenetic insights into the study group on the basis of molecular data. The observations demonstrate that the delimitation and separation of several taxa from the former Coussareeae/Morindeae/Prismatomerideae/Psychotrieae aggregate is supported by wood anatomical data. The Coussareeae can be distinguished from the other Rubioideae by their scanty parenchyma,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Rubiaceae; Rubioideae; Systematic wood anatomy; 42.58. |
| Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/421859 |
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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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| 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 |
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| Welle, B.J.H. ter; Koek-Noorman, J.; Topper, S.M.C.. |
| The wood anatomy of the Moreae without urticaceous stamens is described in detail. Generic descriptions of the following genera are provided: Antiaropsis, Artocarpus, Bagassa, Batocarpus, Clarisia, Parartocarpus, Poulsenia, Prainea, Sorocea, Sparattosyce, and Treculia. Wood anatomical variation below the genus level is very limited, except in the genus Clarisia. Intergeneric variation, however, is much more evident. Most genera can be recognised by the presence or absence of septate fibres, and of radial latex tubes, the size of the intervascular pits, the parenchyma distribution, and crystal distribution. The diagnostic and taxonomic value of several characters is discussed. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Moraceae; Moreae; Systematic wood anatomy. |
| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/535256 |
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| 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 |
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