Microstegium batangense (S.L.Zhong) S.M.Phillips & S.L.Chen

Chen, H., Veldkamp, J. - F. & Kuoh, C. - S., 2012, Taxonomic revision of Microstegium s. str. Andropogoneae, Poaceae), Blumea 57 (2), pp. 160-189 : 184-185

Microstegium batangense (S.L.Zhong) S.M.Phillips & S.L.Chen

Microstegium batangense (S.L.Zhong) S.M.Phillips & S.L. Chen (2006) 594. — Arthraxon batangensis S.L.Zhong (1982) 79. — Type: West Sichuan Veget. Exped. 3898 (holo SWAU; CDBI, PE).

Description after the original publication.

Perennials. Culms geniculately ascending or decumbent, slender, 20–45 cm long. Nodes glabrous. Sheaths glabrous. Ligule a glabrous membrane, 0.6–1 mm long. Blades lanceolate to linear, 1–5.5 cm by 15–20 mm, firm, base attenuate to slightly rounded, pseudopetiole absent, apex acute to acuminate, glabrous to moderately hairy, without tubercle-based hairs. Panicles c. 6.5 cm long. Racemes solitary, ascending, straight, 3.5–6.5 cm long. Rachis fragile, semiterete, margins ciliate, internodes long, slender. Sessile spikelets lanceolate, 6–7.8 mm long, callus pilose. Lower glume lanceolate to linear, coriaceous, midrib glabrous, dorsally longitudinally grooved, scaberulous, rough all over, glabrous, margins glabrous, apex acuminate, entire. Upper glume elliptic, back rounded, glabrous, midrib glabrous, apex entire, acute, awned. Lower florets paleate, male. Lower lemma lanceolate, muticous. Upper lemma linear, 3.5–4 mm long, veined, ciliate, hairy all along the margins, apex incised to 0.5th of the lemma length, awn from a sinus, geniculate, column twisted, (incl. column) 10–14 mm long. Upper palea membranous, apex entire. Anthers 3, c. 3 mm long. Pedicels linear, margins pubescent. Pedicelled spikelets variously reduced.

Distribution — China (Sichuan).

Habitat — Dry river valleys, under shrubs, 2600–3100 m altitude.

Note — Only known from the type (not seen).