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96. Littledalea Hemsley, Hooker’s Icon. Pl. 25: t. 2472. 1896.

扇穗茅属 shan sui mao shu

Authors: Shou-liang Chen & Sylvia M. Phillips

Perennials, often rhizomatous. Leaf sheaths with free margins overlapping almost to the base. Panicle open or loosely contracted, composed of few spikelets. Spikelets large, wedge-shaped to oblong, flat, florets few to several; glumes unequal, membranous or scarious, shorter than florets, lower glume 1–3-veined, upper glume 3–5-veined; floret callus small, rounded; lemmas elliptic-oblong, usually papery, rounded on back, 7–9-veined, glabrous or puberulous, apex obtuse to truncate and erose, awnless or infrequently mucronate; palea shorter and narrower than lemma, scabrid to ciliate along keels, apex 2-toothed. Anthers 3, usually nearly as long as palea.

Four species: China, Kazakhstan, Kyrgyzstan, ?Nepal, Tajikistan; four species (three endemic) in China.

This is a small genus of decorative, mountain grasses with large, usually papery spikelets, almost endemic to China.

1 Culms 15–25 cm; panicle contracted, branches erect, much shorter than spikelets.   1 L. alaica
+ Culms 25–70 cm; branches flexuously spreading, longer than spikelets   (2)
2 (1) Lemma apex narrowly obtuse or emarginate and mucronate; palea 2/3–7/8 lemma length, keels ciliate.   2 L. przevalskyi
+ Lemma apex rounded, sometimes erose; palea 1/2–2/3 lemma length, keels scabrid-ciliolate   (3)
3 (2) Lemmas puberulous, lowest 1.2–1.5 cm; leaf blades pubescent; pedicels scabrid; if panicle branch 2-spiculate, lower spikelet subsessile.   3 L. tibetica
+ Lemmas almost smooth, lowest 1.4–2.7 cm; leaf blades subglabrous; pedicels smooth; if panicle branch 2-spiculate, both spikelets on long pedicels.   4 L. racemosa

Lower Taxa


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