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Descriptions

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

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

Miscanthus depauperatus

HABIT Perennial; caespitose; clumped densely. Culms erect, or geniculately ascending; 30–60 cm long; 2–2.5 mm diam. Culm-internodes terete. Lateral branches lacking, or sparse. Leaf-sheaths longer than adjacent culm internode. Ligule a ciliolate membrane; 2 mm long. Leaf-blades 15–30 cm long; 3–6 mm wide. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 3–9; digitate; erect, or ascending; 4–15 cm long. Central inflorescence axis 0–5 cm long. Rhachis tough; angular; glabrous on surface; scabrous on margins.

Spikelets in pairs. Fertile spikelets pedicelled; 2 in the cluster. Pedicels filiform; unequal; 1.5–6 mm long.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 6 mm long; falling entire. Spikelet callus bearded; base truncate. Spikelet callus hairs purple; 1 length of spikelet.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume lanceolate; 1 length of spikelet; chartaceous; purple; without keels; 5 -veined. Lower glume lateral veins obscure. Lower glume surface flat. Lower glume margins eciliate, or ciliolate. Lower glume apex acuminate. Upper glume lanceolate; chartaceous; purple; without keels; 3 -veined. Upper glume lateral veins obscure. Upper glume margins eciliate, or ciliolate. Upper glume apex acuminate.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 5 mm long; 0.8 length of spikelet; hyaline; 1 -veined; without lateral veins; ciliolate on margins; acuminate. Fertile lemma lanceolate; 4 mm long; hyaline; without keel; 1 -veined. Lemma apex lobed; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 10 mm long overall; with twisted column. Palea ovate; 1 mm long; 0.25 length of lemma; hyaline.

FLOWER Lodicules 2; 0.8 mm long; truncate. Anthers 3; 2.5–3 mm long.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Andropogoneae. Merrill 2001.

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