Perotis rara

大穗茅根

Perotis rara R.Br.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

R.Br. 1810. Prodr. Fl. Nov. Holland. 172.

Chen, C.-H., Liao, H.-C., Lin, C.-Y., Yeh, H.-Y., Wu, S.-C. & Chung, S.-W. 2017. Illustrated Flora of Taiwan 3. (Ill. Fl. Taiwan)

herb

Culms tufted.
Blade lanceolate, ca. 3 cm long, 4 mm wide; ligule ca. 0.2 mm long, minutely ciliate on upper margin.
Inflorescence a single terminal raceme, ca. 9-10 cm long. Spikelets 1-flowered, 3.5-4 mm long; glumes lanceolate, hispid abaxially, tipped with a long awn, 1-nerved; lower glume ca. 3.5 mm long, excluding long awns which are ca. 25 mm long; upper glume of nearly same length as lower, tipped with a long awn of ca. 18 mm long; lemma lanceolate, hyaline, 1-nerved, acute, ca. 1.2 mm long; palea hyaline, 2-nerved, ca. 0.8 mm long, minutely ciliate at apex.
Caryopsis ca. 2 mm long; embryo 1/3 its length of caryopsis.
This species is probably the same as <i>P. hordiformis</i> Nees which is characterized by the definite lines of hairs along the dorsal surface of glumes.