朝阳隐子草(原变种) chao yang yin zi cao (yuan bian zhong)

Diplachne hackelii Honda, J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 3: 112. 1930; Cleistogenes caespitosa Keng var. ramosa F. Z. Li & C. K. Ni; C. chinensis (Maximowicz) Keng; C. hackelii var. chinensis (Maximowicz) Ohwi; C. serotina (Linnaeus) Keng var. aristata (Hackel) Keng; C. serotina var. chi-nensis (Maximowicz) Handel-Mazzetti; Diplachne serotina (Linnaeus) Link var. aristata Hackel; D. serotina var. chinensis Maximowicz; Kengia caespitosa (Keng) Packer var. ramosa (F. Z. Li & C. K. Ni) H. Yu & N. X. Zhao; K. chinensis (Maximowicz) Packer; K. hackelii (Honda) Packer.

Leaf sheaths often tuberculate-hispid; leaf blades 3.5–9 × 0.3–0.6 mm. Culms 0.6–1.2 mm in diam. Lower glume 1–2 mm, 0–1-veined; upper glume 2.2–3.5 mm, 1-veined; lowest lemma 4–5.4 mm. Fl. and fr. Jul–Nov. 2n = 40.

Hill slopes in forests, along forest margins. Anhui, Fujian, Gansu, Guizhou, Hebei, Henan, Hubei, Jiangsu, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan [Japan, Korea].

In Japan the leaf sheaths are always conspicuously tuberculate-hispid; the older, lower sheaths with disarticulated blades are glabrescent and spotted with tubercles.