Abstract:

During examination of Corydalis specimens collected from the alpine subnival zone of the Tibet Autonomous Region in 2018, two new species records for China, C. filicina Prain and C. crassifolia Royle, were identified. This study presents the first detailed Chinese morphological descriptions and color photographs of these species based on the specimens. While C. filicina resembles C. cornuta Royle, it can be distinguished based on its slender stems; apex of outer petals keel with or without purplish brown speckles; upper petal broad, nearly 3-lobed, with narrow crest; cylindric spur straight, as long as limb; subrhombic lower petal suddenly constricted into cuspidate apex; and square and flat stigma with 10 papillae. While C. crassifolia is morphologically similar to C. retingensis Ludlow, it can be distinguished based on different leaf shapes, raceme structures, and non-thickening fruit stalks. This discovery enriches the species diversity of Corydalis in Tibet and provides new data for floristic research and resource development of the genus.

摘要：

在对2018年采自西藏自治区的高山冰缘带紫堇属（Corydalis）植物的标本进行鉴定时，发现两个中国新记录种——中尼黄堇（C. filicina Prain）和厚叶紫堇（C. crassifolia Royle），本文根据标本首次提供了物种详细的中文形态描述和彩色照片。中尼黄堇与角状黄堇（C. cornuta Royle）在形态上较为相似，主要区别在于中尼黄堇茎纤细；外花瓣龙骨状突起的先端部位具暗紫红色斑块或无；上花瓣的瓣片宽展，3裂，具极矮的鸡冠状突起；距平直，圆筒状，与花瓣片近等长；下花瓣近菱形，先端骤缩为短尖头；柱头方形，具10个乳突。厚叶紫堇在形态上与囊果紫堇（C. retingensis Ludlow）相似，区别在于其具有不同的叶形及叶裂、总状花序、不增粗果梗。此次新发现丰富了西藏紫堇属植物的物种多样性，为紫堇属植物的区系研究和资源开发提供了新的数据资料。