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Lasiodiscus Holtzii
''Lasiodiscus'', commonly known as red-hair bushes, is a small plant genus in the family Rhamnaceae. It is endemic to Africa and its adjacent islands. Description The small trees have opposite, often asymmetric leaves. As with ''Colubrina'', the flower ovaries are surrounded by a nectariferous disc that fills the receptacle. Habitat They regularly occur in the understorey of tropical forests, or alternatively in swamp forest. One species, ''L. rozeirae'', is limited to mountain forest understorey. Relationships ''Lasiodiscus'' is morphologically similar to ''Colubrina'', which occurs in the Neotropics, Asia and Afrotropics, but preliminary molecular analysis failed to group them as nearest relatives.A phylogenetic analysis of Rhamnaceae using RBCL and TRNL-F plastid DNA sequences, J.E. Richardson et al., American Journal of Botany, 87(9), 2000. Species There are 9 accepted species: * ''Lasiodiscus chevalieri'' Hutch. – * '' Lasiodiscus fasciculiflorus'' Engl. – Sierra Leo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhamnaceae
The Rhamnaceae are a large family of flowering plants, mostly trees, shrubs, and some vines, commonly called the buckthorn family. Rhamnaceae is included in the order Rosales. The family contains about 55 genera and 950 species. The Rhamnaceae have a worldwide distribution, but are more common in the subtropical and tropical regions. The earliest fossil evidence of Rhamnaceae is from the Late Cretaceous. Fossil flowers have been collected from the Upper Cretaceous of Mexico and the Paleocene of Argentina. Leaves of family Rhamnaceae members are simple, i.e., the leaf blades are not divided into smaller leaflets.Flowering Plants of the Santa Monica Mountains, Nancy Dale, 2nd Ed. 2000, p. 166 Leaves can be either alternate or opposite. Stipules are present. These leaves are modified into spines in many genera, in some (e.g. ''Paliurus spina-christi'' and '' Colletia cruciata'') spectacularly so. ''Colletia'' stands out by having two axillary buds instead of one, one developing int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
