|
''Ekmanianthe'' is a genus of flowering plants in the family Bignoniaceae. It is most closely related to ''Tabebuia'' and has sometimes been included within it.〔Susan O. Grose and Richard G. Olmstead. 2007. "Taxonomic Revisions in the Polyphyletic Genus ''Tabebuia'' s.l. (Bignoniaceae)". ''Systematic Botany'' 32(3):660-670.〕〔Nathaniel Lord Britton. 1915. "Studies of West Indian plants". ''Bulletin of the Torrey Botanical Club'' 42(7):372-379.〕 It consists of two species of trees,〔David J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. ISBN 978-0-521-82071-4〕 neither of which is especially common in any part of its range. ''Ekmanianthe longiflora'' grows to in height and is native to Haiti and the rocky uplands of central Cuba. ''Ekmanianthe actinophylla'' is a smaller tree, to in height, and it occurs in western Cuba where it is known as "roble caimán", for the resemblance of its trunk bark to the hide of a caiman.〔Alwyn H. Gentry. 1992. "Bignoniaceae: Part II (Tribe Tecomeae)". ''Flora Neotropica'' Monograph 25(part 2):1-373.〕 "Roble" is a Spanish name that is also applied to ''Tabebuia''. Neither of the species of ''Ekmanianthe'' is known in cultivation. The type species for ''Ekmanianthe'' is ''E. longiflora''.〔''Ekmanianthe'' In: Index Nominum Genericorum. In: Regnum Vegetabile (see ''External links'' below).〕 The wood of ''Ekmanianthe'' has been variously described as "soft"〔 or as "very hard, heavy, and strong".〔Samuel J. Record and Robert W. Hess. 1940. "American timbers of the family Bignoniaceae". ''Tropical Woods'' 63:9-38.〕 It is probably useful, but the tree is rarely recognized by lumberjacks. == Description == The following description is based on two sources.〔〔Eberhard Fischer, Inge Theisen, and Lúcia G. Lohmann. 2004. "Bignoniaceae". pages 9-38. In: Klaus Kubitzki (editor) and Joachim W. Kadereit (volume editor). ''The Families and Genera of Vascular Plants'' volume VII. Springer-Verlag: Berlin; Heidelberg, Germany. ISBN 978-3-540-40593-1〕 * Trees to tall with thick, ridged bark. * Leaves opposite, long- petiolate, palmately compound; usually 5- foliate. * Inflorescence terminal, few-flowered, racemose or narrowly paniculate. * Calyx cupular, 5-parted, caducous. * Corolla nearly actinomorphic. * Corolla tube unlike that of most of Bignoniaceae in that it is not differentiated into two unlike parts, one above and one below the level of stamen insertion. * Corolla lobes indistinct, deeply laciniate (irregularly cut into slender segments). * Stamens 4 or 5, exserted or subexserted. * Ovary linear, with ovules in 2 series. * Fruit a linear capsule, slightly curved, subterete, with prominent, longitudinal ridges. * Seeds thin, bialate (with 2 wings). ''E. actinophylla'' is cheiropterophilous (bat-pollinated). ''E. longiflora'' has the long, narrow corolla tube that is typical of hawkmoth-pollinated flowers. The basally curved fruit of ''Ekmanianthe'' is a distinguishing feature, clearly separating that genus from ''Tabebuia''. The edge of the corolla is laciniate in a few moth-pollinated and a few bat-pollinated species of ''Tabebuia'', but much less so than in ''Ekmanianthe''. The lenticels of ''E. longiflora'' and the costae (ribs) on the fruit of ''E. actinophylla'' are more prominent than those of any species of ''Tabebuia''. The corolla tube of ''E. longiflora'' is longer than that of any species of ''Tabebuia''. ''E. actinophylla'' has 5 fertile stamens, a trait not seen in ''Tabebuia''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ekmanianthe」の詳細全文を読む スポンサード リンク
|