Microstegium monoracemum W.C.Wu, 1985

Chen, H., Veldkamp, J. - F. & Kuoh, C. - S., 2012, Taxonomic revision of Microstegium s. str. Andropogoneae, Poaceae), Blumea 57 (2), pp. 160-189 : 185-186

Microstegium monoracemum W.C.Wu

Microstegium monoracemum W.C.Wu (1985) 35, f. 1. — Type: Z.­L. Huang 10076 (holo CANT).

Description after the original publication.

Annuals. Culms decumbent, slender, 30–60 cm long, rooting from the lower nodes. Nodes glabrous. Sheaths glabrous, outer margin glabrous, mouth glabrous. Ligule a glabrous membrane, 1 mm long. Blades lanceolate, 1.5–3.5 cm by 3–5 mm, base attenuate to slightly rounded, pseudopetiole absent, apex acute, glabrous. Panicles 3–4 cm long. Racemes 1, erect, straight, 3–4 cm long. Rachis fragile, margins ciliate, internodes slender,

3–4 mm long. Sessile spikelets 4–4.5 mm long, callus puberulous. Lower glume lanceolate; dorsally longitudinally grooved, apex obtuse. Upper glume oblong; back acute, muticous. Lower florets absent. Upper lemma oblong; 0.8–1 mm long, apex entire, awn apical, geniculate, column twisted, (incl. column) 6–7 mm long. Upper palea oblong, 0.3–0.8 mm long, 0.37–0.8 times as long as the lemma. Anthers 3. Pedicels margins pubescent. Pedicelled spikelets subequal to the sessile ones. Distribution — Continental China (Guangzhou).

Note — This species was not included in the Chen & Phillips (2006) and in IPNI (11 Aug. 2010). It seems to be a 1-spiked form of M. vimineum .