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FOC | Family List | FOC Vol. 22 | Poaceae | Ischaemum

3a. Ischaemum aristatum var. aristatum

有芒鸭嘴草(原变种) you mang ya zui cao (yuan bian zhong)

Ischaemum crassipes (Steudel) Thellung var. aristatum Nakai; I. crassipes var. formosanum (Hackel) Nakai; I. cras-sipes var. hondae (Matsuda) Nakai; I. guangxiense Zhao; I. hondae Matsuda; I. sieboldii Miquel var. formosanum Hackel.

Rachis internodes and pedicels often ciliate along outer angle, inner angles glabrous or shortly ciliate. Sessile spikelet obovate, broadly winged, awned; awn exserted, 0.8–1.2 cm, geniculate. 2n = 72.

Open grassy sandy places, often near the sea; 100–1000 m. S Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Taiwan, NE Yunnan, Zhejiang [Japan, Korea].

This awned form of Ischaemum aristatum is very similar to I. ciliare, and the two have been much confused. Ischaemum ciliare clearly differs by its laterally compressed, geniculately awned pedicelled spikelets. It also has bearded nodes and a slightly smaller (4–6 mm) sessile spikelet.


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