Berghausia patula var. patula

Veldkamp, J. F., Teerawatananon, A. & Sungkaew, S., 2015, A revision of Garnotia (Gramineae) in Malesia and Thailand, Blumea 59 (3), pp. 229-237 : 231

a. var. patula

Plants perennial. Culms erect, simple to branched at base, 0.6–1.65 m long. Nodes puberulous to pilose. Sheath mouth glabrous to densely hairy. Ligule 0.3–0.5 mm long. Blades linear, flat, 15–29(–60) cm by 4–15 mm, glabrous to pilose, sometimes with bulbous-based hairs, base narrowly attenuate. Panicle 20–45(–60) cm long, common axis longer than the lowest branches, branches solitary or fascicled, at maturity to stiffly reflexed, scaberulous. Spikelets 3–6.3 mm long (excl. awn), callus hairs 0.2–1.2 mm long. First glume 3–6.3 mm long, shorter than to subequal to the second glume, obtuse to mucronate. Second glume 3–6.3 mm long, apex acute to aristate, arista 0–8 mm long. Lemma awn apical, imperfect, column absent, arista straight, 6–12(–17) mm long. Anthers 1.2–2 mm long.

Distribution — Thailand (North-eastern: Loei), Malay Peninsula (Pahang);N Vietnam,S China (Fujian, Guangdong, Guangxi, Hainan).

Habitat — Along streams, rocky cliffs, sandy soil, borders of woods, oak forest, 0–1500 m altitude.

Notes — The occurrence in Thailand is an extension of the known range.

There is a muticous form, var. mutica (Munro) Rendle , that has been reported for Burma, N Vietnam and S China, but has not yet been seen in Thailand.