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 intermedia

HABIT Annual. Rhizomes short. Culms erect; 50 cm long; 7–9 -noded. Leaf-sheaths glabrous on surface to hirsute. Ligule an eciliate membrane; 1.5 mm long. Leaf-blades linear, or lanceolate; 6–15 cm long; 3–5 mm wide. Leaf-blade surface pilose, or hispid; densely hairy; with tubercle-based hairs.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 2; paired; 2–4 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis hairs tawny. 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; ciliate; with tawny hairs.

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

Companion sterile spikelets well-developed; female; lanceolate; 5 mm long. Companion sterile spikelet glumes coriaceous; pilose; obtuse. Companion sterile spikelet lemmas 2; enclosed by glumes; 1-awned; with 20–30 mm long awn.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 6–9 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; 6–9 mm long; 0.9 length of spikelet; chartaceous; much thinner above (and red-brown); light green; 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 glabrous, or hispid. Lower glume apex truncate. Upper glume oblong; 1 length of spikelet; chartaceous.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret lanceolate; hyaline. Fertile lemma lanceolate; chartaceous; without keel. Lemma apex entire, or dentate; 2 -fid; awned; 1 -awned. Principal lemma awn apical, or from a sinus; geniculate; 20–30 mm long overall; with twisted column.

DISTRIBUTION Asia-temperate: China. Asia-tropical: Indo-China.

NOTES Andropogoneae. Fl China 2004.

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