Phenotypic Variation of Gelidocalamus stellatus Wen Complex (Bambusoideae)

Gelidocalamus stellatus Wen complex includes Gelidocalamus stellatus, Gauritus, Gmonophyllus, Gmultifolius and Gwugongshanensis, indicating the existence of some taxonomic disputes within this taxon. Based on 13 main phenotypic traits, in this paper, 13 populations of the complex are investigated and the results show that 1) All 13 characters have some changes between and within populations, of which the maximum is the height under branch with 276%, while the minimum is the ratio of length and width with 64%; 2) In the Jing Gang Mountain population (JGM), seven characters, such as the diameter at breast height, the node number, the height under branch, the leaf length, the leaf width, the ratio of leaf length and width, and numbers of each branch, are relatively stable among 4 different populations, and populations of Gstellatus Wen complex can be distinguished effectively by that seven characters, so it maybe have some worth for the clarification of the complex; 3) Besides that Jiu Yi Mountain population (JYM) and Xiao Long Gui population (XLG) share the same or similar traits with that of JGM, there have many remarkable differences between other populations, such the leaf in Lian Ping Country population (LPC) and Huang He Village population (HHV), the culm in Wu Gong Mountain population (WGM) and the numbers of each branch in Gan Zi Depression population (GZD) and Rong Jia Cavity population (RJC). With the observation of the culm sheath and the abaxial epidermis of leaves, the taxonomic position of some populations is discussed. Our results still indicate that Gmultifolius (Huang He Village population) and Gauritus may be null and void. Furthermore, we proposal Gwugongshanensis (Wu Gong Mountain population) and Gmonophyllus (Jiu Yi Mountain population) should be as a taxon under Gstellatus.     

井冈寒竹属一非法名称

报道了井冈寒竹属一个非法名称Gelidocalamus auritus B.M.Yang。     

中国竹类植物新资料

<正> 壮绿竹(牛角竹) 新组合 Bambusa valida(Q H Dai)W.T.Lin,comb.nov.—Dendrocalamopsis ualidus Q.H.Dai,Act.Phytotax.Sin.24:393—394.f.1.1986. 根据采自广州华南农业大学,林万涛31864(引自模式产区——广西,南宁,广西林科所)标本。该种植物体是有刺的,而绿竹属是无刺的,故作新组合。     

井冈寒竹属叶表皮微形态特征及其分类学意义

井冈寒竹属(又名短枝竹属,Gelidocalamus Wen)是1982年温太辉以产于井冈山区的井冈寒竹Gelidocalamus stellatus Wen为模式种建立的新属。自井冈寒竹属建立以来,陆续有新的分类群发表,或将一些分类群归并到本属中,但迄今尚未开展系统研究。为了发现更多的井冈寒竹属分类学证据,本研究利用扫描电镜对井冈寒竹属9个分类群的叶表皮微形态特征进行了观察。结果表明:9个分类群竹叶下表皮的长细胞、微毛、大毛的形态和分布较为一致,但乳突、刺毛、气孔器和短细胞呈现较丰富的微形态差异。尤其是乳突的形状、气孔器及其周围的乳突排列式样最为丰富,具有重要的分类学价值,可以作为属内种的划分依据。     

Six New Bamboo Species from Guangdong

Six new taxa of the Bambusoideae are described from Guangdong Province, China. They are Indosasa suavis W. T. Lin et Z. J. Feng, Phyllostachys purpureomaculata W. T. Lin et Z. J. Feng, Arundinaria quadrangula W. T. Lin et Z. J. Feng, A. pubiannula W. T. Lin et Z. J. Feng, Gelidocalamus albopubescens W. T. Lin et Z. J. Feng, and Sasa duplicata W. T. Lin et Z. J.Feng.