浙江种子植物新资料(Ⅵ)

New Materials of the Seed Plants in Zhejiang (Ⅵ)

作为浙江种子植物区系资料的补充,文章描述发表了鼠李科Rhamnaceae一新种:浙江勾儿茶Berchemia zhejiangensis Y.F.Lu et X.F.Jin,新种接近牯岭勾儿茶B.kulingensis,区别主要在于其花序轴和小枝均密被短柔毛,叶柄长3～5mm,花萼狭卵形,先端长渐尖,边缘无毛.在《浙江植物志》(第二版)编研过程中,根据属处理范畴的不同,将以往发表的3种进行了改隶新组合:昌化刺蓼Persicaria changhuaensis从刺蓼属转入广义蓼属Polygonum,组合为Polygonum changhuaense;穗芽水葱Schoenoplectus gemmifer从水葱属转入广义藨草属Scirpus,组合为Scirpus gemmifer;磐安樱Prunus pananensis从广义李属转入樱属Cerasus,组合为Cerasus pananensis.通过野外观察和标本研究,认为仙白草(变种)Aster turbinatus var.chekiangensis与模式变种陀螺紫菀的区别甚为明显,提升为种级处理,并作了新组合.此外,报道了近年来在采集、整理和鉴定莎草科标本过程中发现的一些浙江分布新记录:南亚薹草Carex fedia、眉县薹草C.meihsienica、东方薹草C.tungfangensis、垂序珍珠茅Scleria rugosa、海南藨草Scirpus hainanensis与矮两歧飘拂草Fimbristylis dichotoma subsp.depauperata.

As a supplement of the seed plants from Zhejiang,Berchemia zhejiangensis,a new species is described with the line-drawing,and it differs from B.kulingensis in having the young shoots and rachises of the inflorescence densely pubescent,petioles 3~5 mm long,sepals narrowly ovate,long-acuminate at the apex,margin glabrous.Persicaria changhuaensis is transferred to Polygonum s.l.and combined as Polygonum changhuaense.Schoenoplectus gemmifer is transferred to Scirpus s.l.and combined as Scirpus gemmifer,while Prunus s.l.is used as a narrow category(s.str.)and P.pananensis is combined as Cerasus pananensis.Aster turbinatus var.chekiangensis is raised as specific rank and combined as Aster chekiangensis.Five species and one subspecies,namely Carex fedia,C.meihsienica,C.tungfangensis,Scleria rugosa,Scirpus hainanensis and Fimbristylis dichotoma subsp.depauperata,are reported as new distribution records from Zhejiang.