羊茅属(禾本科)新类群  

New taxa of Festuca(Poaceae) from China

作　　者：樊守金[1] 张学杰[1] 李法曾[1] 

机构地区：[1]山东师范大学生命科学学院,济南250014

出　　处：《广西植物》2010年第1期26-28,50,共4页Guihaia

基　　金：山东省自然科学基金(Z-2002 D04)~~

摘　　要：描述了山东产羊茅属的2个新类群,即毛鞘羊茅和崂山小颖羊茅。毛鞘羊茅与羊茅相近,表现在叶片内卷成线状,圆锥花序紧缩成穗状,外稃背部粗糙,区别在于具有向上膜质的叶耳,叶鞘密被倒向的微毛,小穗长7-10mm,第1外稃长4-5mm,顶端具0.5-1mm长的芒或无,内稃脊光滑;崂山小颖羊茅与原变种的区别在于第1颖卵状披针形,长1.5-2mm,具2-3脉。Festuca trichovagina F.Z.Li and F.parvigluma Steud.var.laoshanensis F.Z.Li,two new taxa of Festuca （Poaceae） from Shandong,China are described and illustrated here. F.trichovagina F.Z.Li is closely related to F.ovina L.by having leaf involuting to filate,panicles spiciform,lemma abaxially scabrose,but differs by having the membranous upward leaf auris,leaf sheath with dense retrorse microtriche,spikelet 7-10 mm long,the lemma 4-5 mm long,aristate 0.5-1 mm long at apex or absent,the crista of palea glabrous.F.parvigluma Steud.var.laoshanensis differs from F.parvigluma Steud.var.parvigluma by having the lower glume ovate lanceolate,1.5-2 mm long,2-3 nerve.

关 键 词：羊茅属 毛鞘羊茅 崂山小颖羊茅 新种 禾本科 山东 中国 

分 类 号：Q949[生物学—植物学]