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Descriptions

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

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

Apocopis breviglumis

HABIT Annual; caespitose; clumped loosely. Culms 25–50 cm long; wiry; 7–9 -noded. Leaf-sheaths pilose. Ligule an eciliate membrane; 1 mm long. Leaf-blades linear, or lanceolate; 3–13 cm long; 2.5–6 mm wide. Leaf-blade surface pilose; with tubercle-based hairs. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 2; paired; 2.5–4.5 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis hairs tawny. Rhachis internodes linear; 2 mm long.

Spikelets 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.

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

Companion sterile spikelets represented by barren pedicels.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate, or cuneate; dorsally compressed; 3.5–4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely. Spikelet callus hairs tawny.

GLUMES Glumes dissimilar; reaching apex of florets; firmer than fertile lemma. Lower glume obovate, or cuneate; 0.9 length of spikelet; chartaceous; much thinner above (and red-brown); yellow; without keels. Lower glume primary vein falling short of apex. Lower glume lateral veins transversely connected at apex; all falling short of apex. Lower glume surface pilose; hairy at apex. Lower glume apex erose; truncate. Upper glume oblong; 1 length of spikelet; chartaceous.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret lanceolate; hyaline; pilose; hairy at apex; erose. Fertile lemma lanceolate, or oblong; chartaceous; without keel. Lemma apex entire; awned; 1 -awned. Principal lemma awn geniculate; 22–28 mm long overall; with twisted column.

DISTRIBUTION Asia-temperate: China.

NOTES Anomochloeae. Fl China 2007.

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