短多穗扁莎（莎草科）的合格发表

Validation of Pycreus polystachyos var. brevispiculatus (Cyperaceae)

摘要:

合格发表莎草科一新变种—短多穗扁莎草Pycreus polystachyos (Rottb.) P. Beauv. var. brevispiculatus How ex Y. F. Deng。该变种与原变种Pycreus polystachyos (Rottb.) P. Beauv. var. polystachyos的区别在于秆高8~15 cm，辐射枝极短或近无，小穗多数，簇生成头状，长4~7 mm，具6~14朵花，鳞片褐色或黄褐色。

Abstract:

A new variety, Pycreus polystachyos (Rottb.) P. Beauv. var. brevispiculatus How ex Y. F. Deng, is validly published here. It differs from var. polystachyos in its culms 8~15 cm tall, anthela rays abbreviated or nearly absent, spikelets many, congested into nearly a head, 4~7 mm, 6~14-flowered, scales brown or yellowish-brown.