云南蜘蛛抱蛋属(天门冬科)一新种——辐射蜘蛛抱蛋  

Aspidistra radiata,a New Species of Asparagaceae from Yunnan Province,China

作　　者：钟志祥[1] 蔡秀珍[2] 田径[2] 胡光万[1] 王青锋[1] ZHONG Zhi-Xiang CAI Xiu-Zhen TIAN Jing HU Guang-Wan WANG Qing-Feng(Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China Botanical Department, College of Life Sciences, Hunan Normal University, Changsha 410081, China)

机构地区：[1]中国科学院武汉植物园,武汉430074 [2]湖南师范大学生命科学学院植物学系,长沙410081

出　　处：《植物科学学报》2016年第6期842-848,共7页Plant Science Journal

基　　金：国家自然科学基金资助项目(31270244;31401904);湖南省教育厅科学研究项目优秀青年项目(16B158)~~

摘　　要：报道了产自云南天门冬科蜘蛛抱蛋属（Aspidistra Ker Gawler）一新种——辐射蜘蛛抱蛋（A.radiata G.W.Hu＆Q.F.Wang）。该种与春秀蜘蛛抱蛋（A.chunxiuensis C.R.Lin＆Y.Liu）相近,但该种因叶鞘3~4枚;总花梗较短,长5~9.5 cm,苞片5~7枚;花被裂片较多,常16（偶14或18）深裂,花被筒扁钵形,花被裂片较长,为65~76 mm,基部较宽,为13~16 mm;雄蕊16（偶14或18）枚;柱头上表面中央隆起区从中央向边缘具8（偶7或9）条呈辐射状排列的紫黑色、花瓣状隆起,每个花瓣状隆起的中央具沟槽等特征而与后者不同。辐射蜘蛛抱蛋亦与巨花蜘蛛抱蛋（A.grandiflora Tillich）近缘,但巨花蜘蛛抱蛋的叶片为狭倒卵形,（50×11）cm,基部狭楔形;花被裂片较短,为50~60 mm;柱头上表面中央具5条紫色辐射状的肋而有别于辐射蜘蛛抱蛋。A new species of Asparagaceae,Aspidistra radiata G. W. Hu Q. F. Wang,from Yunnan,China,is described and illustrated. The new species is similar to A. chunxiuensis,but differs in its vaginate leaves 3- 4,peduncle 5- 9.5 cm long,with 5- 7 bracts,perigone deeply 16（ occasionally 14 or 18） lobed apically; perigone tube alms bowl-shaped,inside with 16（ occasionally 14 or 18） keels on the mouth; lobes 65-76 mm long,13-16 mm wide at the base; stamens 16（ occasionally 14 or 18）; bumped center of the stigma upper surface with 8（ occasionally 7 or 9） radiate, dark purple, petal-like ridges from the center to the margin,and a groove in each ridge. A. grandiflora is also similar to the new species,but differs in its leaf blade narrowly obovate,（ 50 × 11） cm,base narrowly cuneate; perigone lobes shorter,50- 60 mm long; and stigma upper surface with 5 purple radial ribs in the center.

关 键 词：天门冬科 蜘蛛抱蛋属 命名 分类学 

分 类 号：Q949.71[生物学—植物学]