云南鸡脚连(小檗科)的变异式样

Variation Patterns of Berberis paraspecta Ahrendt(Berberidaceae) from Yunnan Province

小檗属鸡脚连（Berberis paraspecta Ahrendt）自1961 年发表以来,已有分类学文献对该种的描述一直模糊不清.通过在云南省玉龙县玉龙雪山野外调查与居群取样,结合模式标本核查,对鸡脚连重要分类学性状特征进行了补充和订正.鸡脚连果实1-5 个簇生,平均为（2.23±1.18）个;幼果或子房内胚珠1-3 个,平均为（2.07±0.29）个;成熟果实紫黑色,无粉霜,种子1-3 个,平均为（1.77±0.44）个.研究结果表明,有关文献关于鸡脚连果实单生,且仅含1 粒种子等关键的特征描述,在鸡脚连野生居群及模式标本上都不存在, 同时分析了鸡脚连果实、种子及胚珠数目、叶片及叶刺等分类学性状特征的变异系数,并补充了活植物及模式标本的图片资料.

Berberis paraspecta Ahrendt is an uncertain species in the literatures after its publication in 1961. Thus, some important taxonomic characters of this species were revised based on fi eld surveys and population samplings in Yulongxueshan Mountain, Yulong Xian, northwestern Yunnan Province, combining with checking the type specimen. The fruits are 1–5-fascicled with average of 2.23±1.18, ovaries or young fruits contain 1 to 3 ovules with average of 2.07±0.29, the ripe fruits are black-purple in color, epruinose, containing 1 to 3 seeds with average of 1.77±0.44. The results showed that the key characteristics of 1-seeded and solitary fruits recorded in all relevant literatures doesn't exist in both the wild populations and the type specimen of B. paraspecta. The coeffi cients of variation in the taxonomic characters of fruits, seed numbers, ovules numbers, leaves and spines of B. paraspectawere analyzed. Furthermore, photos on the morphology of both living plants in the wild and the type specimen are provided to fi ll the gap of absence of illustration of B. paraspecta in extant literatures including Flora of China.