紫堇科二新种

Two new species of Fumariaceae

关键词:  紫堇科, 紫堇属, 新种, 中国

Key words:  Fumariaceae, Corydalis, new species, China

摘要:

该文描述了紫堇科二新种:(1)自云南省发现的紫堇科紫堇属一新种,宽鳞紫堇。此新种与波密紫堇相近似,与后者的区别在于本新种的根状茎鳞片半透明,具三条脉,茎无叶,外花瓣无鸡冠状突起,雄蕊束具2花药,花丝条形,无脉,子房宽条形。(2)自黑龙江省发现的紫堇科紫堇属一新种,鹤岗延胡索。此种与新疆元胡相似,但本种叶的小叶多在顶端,具1～5牙齿,花序苞片有3～5小裂片,上花瓣及其瓣片和距均较小,蜜腺呈狭卵球形,弯曲,顶端尖锐而与新疆元胡相区别。

Abstract:

Two new species of Fumariaceae are described in this paper:(1)A species of the genus Corydalis(Fumariaceae), C. latilepidota, is described as new from Yunnan Province. It is related to C. pseudoadoxa C. Y. Wu & H. Chuang, differing in its semi-hyaline, trinerved scales of rhizome, leafless stem, uncrested outer petals, stamen bundle with two anthers, linear and nerveless filament, and broadly linear ovary.(2)A species of the genus Corydalis(Fumariaceae), C. hegangensis, is described as new from Heilongjiang Province. It is similar to C. glaucescens Regel, differing in its usually apically 1-5-dentate leaflets, 3-5-lobutale bracts, smaller upper petal with shorter limb and shorter spur, and narrowly and curvedly ovoid nectary.