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Descriptions

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

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

Coelorachis glandulosa

HABIT Perennial. Culms erect; robust; 150–250 cm long; with prop roots. Leaf-sheaths glabrous on surface. Ligule a ciliolate membrane; 1 mm long. Leaf-blade base broadly rounded, or cordate. Leaf-blades linear, or lanceolate; 30–60 cm long; 25–35 mm wide. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence compound; paniculate. Inflorescence composed of racemes; terminal and axillary; subtended by a spatheole; exserted. Spatheole linear.

Racemes 1; single; smoothly terete; 8–15 cm long. Rhachis fragile at the nodes; angular; glabrous on surface. Rhachis internodes cuneate; 3.5–5 mm long. Rhachis internode tip transverse; crateriform; with simple rim.

Spikelets appressed; in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels columnar; semiterete; 4.4 mm long; tip cupuliform.

STERILE SPIKELETS Companion sterile spikelets rudimentary; comprising 2 subequal glumes without lemmas; ovate; 1.6 mm long; shorter than fertile; persistent. Companion sterile spikelet glumes winged on keels.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 4–5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pubescent; base truncate; with central peg; attached transversely.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume ovate; 1 length of spikelet; indurate; 2-keeled; winged on keel; winged broadly; winged above; 7 -veined. Lower glume surface with hooked spines; rough on flanks; glabrous, or pubescent. Lower glume apex acute. Upper glume oblong; chartaceous; 1-keeled; winged on keel; winged all along; 3 -veined. Upper glume surface puberulous.

FLORETS Basal sterile florets barren; with palea. Lemma of lower sterile floret ovate; hyaline; 3 -veined; ciliolate on margins. Palea of lower sterile floret 0.66 length of lemma. Fertile lemma elliptic; 2.6 mm long; hyaline; without keel; 3 -veined. Palea 0.8 length of lemma.

DISTRIBUTION Asia-tropical: Indo-China, Malesia, and Papuasia.

NOTES Andropogoneae. Gilliland.

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