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首页> 外文期刊>Bothalia: African Biodiversity & Conservation >Taxonomic status of the endemic South African bamboo, Thamnocalamus tessellatus
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Taxonomic status of the endemic South African bamboo, Thamnocalamus tessellatus

机译：南非特有竹子Thamnocalamus tessellatus的分类学地位

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Thamnocalamus tessellatus (Nees) Soderstrom & Ellis, comb. nov. [= Arundinaria tessellata (Nees) Munro] is the only endemic South African bamboo and occurs from the eastern districts of the Cape, through Lesotho and Natal, to the eastern Orange Free State at elevations of about 1 500-2 500 m. The Mountain Bamboo, or‘Bergbamboes' was first described by Nees in 1841 as a member of the genus Nastus because of the similarity, tohim, of the spikelets between it and N. borbonicus, but was later transferred to the all-encompassing genus of the time, Arundinaria, the type species of which is endemic to the south-eastern United States of America. Based onour present knowledge of bamboo genera, this South African species may be excluded from Nastus because the inflorescence is not a panicle but bracteate racemiform, the vegetative branches do not arise in a verticillate manner but are a series of subequal branches that are borne in a row above the nodal line and T. tessellatus has anandroecium of three stamens and not six as in Nastus. The Bergbamboes, with sympodial rhizomes and branchcomplement of several subequal branches, can also not be maintained in Arundinaria, for monopodial rhizomesand a single branch at the node are typical of this genus. The simple, ebracteate, and exserted inflorescence ofArundinaria is also quite distinct from that of the Bergbamboes. In order to place the South African bamboo more precisely we have made comparative studies of its leaf anatomy and epidermis, gross morphology, and analyses of its inflorescence and spikelets. The results of all thesestudies reveal a striking resemblance to members of the Sino-Himalayan genus, Thamnocalamus, to which we haveaccordingly transferred the species. The results are presented, together with an interpretation of the phylogeneticposition of the Bergbamboes and possible events that led to the disjunction of species in the genus.
机译：Thamnocalamus tessellatus（Nees）Soderstrom＆Ellis，梳子。十一月[= Arundinaria tessellata（Nees）Munro]是南非唯一的特有竹，分布在开普省东部地区，穿过莱索托和纳塔尔，海拔约1500至2 500 m，直至东部的奥兰治自由州。奈斯（Nees）于1841年首次将山竹（Bergbamboes）称为纳斯图斯属（Nastus）的一员，因为它与小叶猪笼草（N. borbonicus）的小穗相似，但后来被转移到当时是Arundinaria，其类型物种是美国东南部特有的。根据我们目前对竹属的了解，该南非种可能会被排除在纳斯图斯以外，因为花序不是圆锥花序，而是bra状的总状花序，营养枝不是以网状的方式出现，而是一系列亚等分枝，它们以在节点线上方排成一排，T。tessellatus的雄蕊前部有3个雄蕊，而不是在Nastus中的6个。带有茎状根茎和几个亚等分枝的分支补体的Bergbamboes在Arundinaria中也无法维持，因为独脚根茎和结节上的单个分支是该属的典型特征。 Arundinaria的简单，无ract的和外露的花序也与Bergbamboes的完全不同。为了更精确地放置南非竹子，我们对其叶的解剖结构和表皮，总体形态进行了比较研究，并对其花序和小穗进行了分析。所有这些研究的结果都与中喜马拉雅属Thamnocalamus的成员非常相似，我们已经将其转移到了该物种中。介绍了结果，以及对Bergbamboes的系统发生位置的解释以及可能导致该属物种分离的事件。

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