中国金丝桃属金丝桃组(藤黄科)新分类群

描述了中国云南北部的金丝桃属Hypericum L.(藤黄科)两个新种,即楚雄金丝桃H. fosteri N. Robson和漾濞金丝桃H. wardianum N. Robson.二者均与短柱金丝桃H. hookerianum Wight & Arn.相近.楚雄金丝桃为一地方特有种,目前仅在模式地点发现;漾濞金丝桃在缅甸东北部还有分布.二者主要以蒴果伸长,非卵状近球形,萼片无中脉而有别于短柱金丝桃.此外,将宽萼金丝桃H. latisepalum (N. Robson) N. Robson从亚种提升为种;将变异较大的纤枝金丝桃H. lagarocladum N. Robson划分为两个亚种,即叶较宽、具有开张习性的原亚种纤枝金丝桃H. lagarocladum ssp. lagarocladum和叶较窄、更为直立的新亚种狭叶金丝桃H. lagarocladum ssp. angustifolium N. Robson.

Hypericum sect. Ascyreia (Clusiaceae): new species and subspecies from China

Two new species, both related to H. hookerianum Wight & Arn., are described from northern Yunnan, H. fosteri N. Robson and H. wardianum N. Robson. The former is apparently endemic, having been found in only one locality, whereas the latter also occurs in north-eastern Myanmar. Both differ in particular from H. hookerianum in that the capsule is elongate, not ovate-subglobose and the sepals are not ribbed. In addition, H. bellum ssp. latisepalum is raised to specific rank as H. latisepalum (N. Robson) N. Robson and the variable H. lagarocladum is divided into two subspecies, one broad-leaved with a spreading habit (ssp. lagarocladum) and the other narrow-leaved and more erect (ssp. angustifolium N. Robson).