GrassBase - The Online World Grass Flora


W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Apocopis collina

HABIT Perennial. Culms 20–40 cm long; 3–4 -noded. Culm-nodes brown, or purple. Leaf-sheaths glabrous on surface, or pilose; with tubercle-based hairs. Ligule a ciliolate membrane; 1 mm long. Leaf-blades 3–5 cm long; 2–3.5 mm wide. Leaf-blade surface smooth; pubescent; hairy abaxially; with tubercle-based hairs. Leaf-blade margins cartilaginous; smooth, or scaberulous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes. Peduncle glabrous.

Racemes 1–2; single, or paired; 2–4.5 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis hairs tawny; 3 mm long. Rhachis internodes linear; 2 mm long.

Spikelets appressed; in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels adnate at the base to lower glume of sessile spikelet; linear; 0.5–1.5 mm long; ciliate; with tawny hairs; with 4 mm long hairs.

STERILE SPIKELETS Basal sterile spikelets well-developed; 1 in number.

Companion sterile spikelets represented by barren pedicels.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 5.5–6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse; attached transversely.

GLUMES Glumes dissimilar; reaching apex of florets; firmer than fertile lemma. Lower glume oblong; 5.5–6 mm long; 1 length of spikelet; coriaceous; much thinner above; much thinner on margins; light brown; without keels; 7 -veined. Lower glume primary vein falling short of apex. Lower glume lateral veins all falling short of apex. Lower glume surface asperulous (granular). Lower glume margins ciliate. Lower glume apex truncate, or obtuse. Upper glume lanceolate; 1 length of spikelet; chartaceous; 3 -veined. Upper glume apex truncate.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret lanceolate, or ovate; 5 mm long; hyaline; 0 -veined; without midvein; without lateral veins. Fertile lemma oblong; 4.5 mm long; hyaline; without keel; 0–1 -veined. Lemma apex erose; muticous, or mucronate. Palea hyaline; 0 -veined; without keels.

FLOWER Lodicules absent. Anthers 2; 2–3 mm long.

DISTRIBUTION Asia-tropical: Indo-China and Malesia.

NOTES Andropogoneae. Bor 1992.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.