凌源隐子草 ling yuan yin zi cao

Kengia kitagawae (Honda) Packer.

Culms densely tufted with small scaly buds at base, erect, ca. 50 cm tall, 1–1.5 mm in diam. Leaf sheaths longer than internodes, lower clustered, glabrous but pilose at mouth; leaf blades linear or linear-lanceolate, usually involute,stiffly spreading, 5–7(–9) × 0.2–0.4 cm; ligule 0.2–0.3 mm. Panicle contracted, 5–8 cm, base included in uppermost sheath; branches narrowly ascending, simple, compactly spiculate, lowest branch (2–)3–4.5 cm. Spikelets 7–9 mm, florets 2–5; glumes narrowly lanceolate-oblong, acuminate; lower glume 2.8–4 mm, 3-veined; upper glume 4.2–5.5 mm, 3–5-veined; lemmas lanceolate-oblong, lowest 5–5.3 mm, glabrous or sparsely pilose near margins and toward base; awn 0.5–1 mm; palea keels scabrid.

Mountain slopes, forest margins. Hebei, Liaoning [Mongolia, Russia (Far East)].

Cleistogenes hackelii (Honda) Honda var. brachyphylla Ohwi (J. Jap. Bot. 18: 540. 1942; Kengia hackelii (Honda) Packer var. brachy-phylla (Ohwi) H. Yu & N. X. Zhao), described from Hebei, may belong here. The type has not been seen.