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Descriptions

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

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

Andropogon munroi

HABIT Perennial; caespitose. Culms 30–150 cm long. Ligule an eciliate membrane. Leaf-blades 15–30 cm long; 3–7 mm wide. Leaf-blade surface glabrous, or pubescent.

INFLORESCENCE Inflorescence composed of racemes; terminal, or terminal and axillary.

Racemes 2–4(–8); digitate; 2.5–7.5 cm long. Central inflorescence axis 0.3–1.5 cm long. Rhachis fragile at the nodes; ciliate on margins. Rhachis internodes linear. Rhachis internode tip transverse; crateriform; with lobed rim. Raceme-bases brief, or filiform; 4–8 mm long.

Spikelets appressed; in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; ciliate.

STERILE SPIKELETS Companion sterile spikelets well-developed; male; elliptic, or oblong; dorsally compressed; 4.5–6.5 mm long; as long as fertile; persistent. Companion sterile spikelet glumes chartaceous; muticous. Companion sterile spikelet lemmas enclosed by glumes.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or oblong; dorsally compressed; 4.5–6.5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pubescent; base obtuse; inserted.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic, or oblong; 1 length of spikelet; coriaceous; 2-keeled; keeled dorsally, or laterally. Lower glume intercarinal veins absent. Lower glume surface concave. Upper glume lanceolate; chartaceous; 1-keeled.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline; 2 -veined. Fertile lemma oblong; hyaline; without keel. Lemma apex lobed; 2 -fid; incised 0.5 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 8–15 mm long overall; with twisted column. Column of lemma awn glabrous.

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

NOTES Andropogoneae. Fl Pak 1993.

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