黑龙江产莎草科(Cyperaceae)一新记录种

ONE NEW RECORD SPECIES OF THE CYPERA CEAE FAMILY IN HEILONGJIANG

在撰写《黑龙江植物志》(莎草科)过程中,发现莎草属(Cyperus)的白鳞莎草(Cyperus nipponicus Franch. et Sav.)为黑龙江省新记录种。其主要特征为:植株密集丛生。矮小,一般2—8 cm高。苞片叶状,明显长于花序。花序头状或球形,淡黄绿色,小穗扁平状,披针形或狭卵形,鳞片薄膜质。小坚果约为鳞片长的1/2。柱头2。本种喜生于湿地或江(湖)岸边沙地。

One new record species of the Cyperaceae family in Heilongjiang Province is found, that is Cyperus nipponicus Franch et say, the main characters are: Plants are concentrated caespitose, short and small, generally 2—8cm tall. Brats are leaf-like, obviously longer than inflorescence. Inflorescence is head-like or ball shape, and light yellow green. Spikelets are flat and lanceolate or angust-ovate. Scales are membrane, nuts are about half of the scales. There are two stigmas. This species grows in the condition of Wet or sand-soil of river bank.