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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 schmidiana

HABIT Annual. Culms geniculately ascending; 15–18 cm long. Culm-internodes distally glabrous. Lateral branches ample. Leaf-sheaths loose; mostly shorter than adjacent culm internode; keeled; striately veined; pilose. Ligule an eciliate membrane. Leaf-blades 1–2 cm long; 1.5–2 mm wide. Leaf-blade midrib conspicuous. Leaf-blade venation with 4–6 secondary veins. Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 2; paired; erect; 3 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis internodes linear.

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; ciliate.

STERILE SPIKELETS Companion sterile spikelets represented by barren pedicels.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; truncate; 4.5–5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse; attached transversely.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume obovate; 3.5–4 mm long; 0.7–0.8 length of spikelet; coriaceous; without keels; 7 -veined. Lower glume surface flat. Lower glume apex erose; truncate. Upper glume oblong; 5 mm long; 1 length of spikelet; chartaceous; light brown. Upper glume apex acuminate.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret elliptic; hyaline; truncate. Fertile lemma oblong; 2.8–3 mm long; hyaline; without keel; 1 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 12–14 mm long overall; with twisted column.

FLOWER Lodicules absent. Anthers 2.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Andropogoneae. Camus 1997.

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