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 anomala

HABIT Perennial. Butt sheaths glabrous. Culms 10–20 cm long; 2 -noded. Culm-nodes constricted; glabrous. Leaf-sheaths pilose; with tubercle-based hairs. Ligule an eciliate membrane; 1 mm long. Leaf-blades linear, or lanceolate; flat, or involute, or revolute; 4–8 cm long; 2–3 mm wide. Leaf-blade surface scaberulous; rough adaxially; pilose; sparsely hairy; hairy abaxially; with tubercle-based hairs. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 2–3; paired, or digitate; 1.5–2.5 cm long. Rhachis fragile at the nodes; ciliate on margins. Rhachis hairs white. Rhachis internodes linear; 2.5–3 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; 3–4 mm long; ciliate.

STERILE SPIKELETS Companion sterile spikelets well-developed; male; elliptic; dorsally compressed; 3 mm long; longer than fertile. Companion sterile spikelet glumes chartaceous; 3–5 -veined; pilose; truncate; muticous. Companion sterile spikelet lemmas 2; enclosed by glumes; 1-awned (geniculately); with 5 mm long awn.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; truncate; 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 oblong; 4.5 mm long; 0.9 length of spikelet; chartaceous; much thinner above; without keels; 5 -veined. Lower glume lateral veins distinct. Lower glume surface pilose; hairy below. Lower glume hairs white. Lower glume apex erose; truncate. Upper glume oblong; 1 length of spikelet; chartaceous; with hyaline margins; 3 -veined. Upper glume surface pilose. Upper glume apex truncate.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret oblong; 4.5 mm long; 0.9 length of spikelet; hyaline; 0 -veined; without midvein; without lateral veins; pilose; hairy at apex; truncate. Fertile lemma oblong; 4 mm long; hyaline; without keel; 1 -veined. Lemma apex lobed; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 8 mm long overall; with twisted column. Column of lemma awn hispidulous. Palea hyaline; 2 -veined; without keels.

FLOWER Lodicules absent. Anthers 2; 1–2 mm long.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Andropogoneae. Bor.

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