Microstegium pleiostachyum (Lauterb. & K.Schum.) A.Camus, 1921

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

Microstegium pleiostachyum (Lauterb. & K.Schum.) A.Camus

Microstegium pleiostachyum (Lauterb.& K.Schum.) A. Camus (1921) 200. — Pollinia pleiostachya Lauterb.& K.Schum. in Schum.& Lauterb.(1901) 168. — Type: Hellwig 637 (holo B, extant?).

Description after the original publication.

Culms of moderate stature or slender, 120–130 cm long. Sheaths outer margin hairy. Ligule a ciliolate membrane or a fringe of hairs, c. 1.5 mm long. Blades lanceolate to linear, 6–15 cm by 8–14 mm, base attenuate to slightly rounded, pseudopetiole absent, margins scaberulous to scabrous, apex acuminate to attenuate, glabrous. Panicles c. 6.5 cm long. Racemes 18–34, c. 6 cm long. Rachis fragile, margins ciliate, internodes c. 2.5 mm long. Sessile spikelets oblong to lanceolate, c. 3 mm long, callus pilose. Lower glume dorsally flat to concave, scaberulous, rough at apex, glabrous, margins glabrous. Upper glume muticous. Lower florets absent. Upper lemma c. 1 mm long, glabrous, apex entire, awn apical, straight to flexuous, column absent, c. 9 mm long. Upper palea c. 0.5 mm long, 0.5th times as long as the lemma. Anthers c. 1.5 mm long. Pedicels margins pubescent. Pedicelled spikelets subequal to the sessile ones.

Distribution — New Guinea, Madang Prov., W Finisterre (‘Kaiser Wilhelmsland, Oertzen Gebirge’; 5°32'S, 145°48'E).

Note — This seems to be a form of M. spectabile .