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Descriptions

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

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

Bothriochloa woodrovii

HABIT Perennial; caespitose. Rootstock evident. Culms erect; 90–120 cm long. Culm-internodes elliptical in section; solid. Culm-nodes glabrous. Lateral branches sparse. Leaves cauline. Leaf-sheaths loose; keeled; smooth. Ligule a ciliolate membrane; 2.5 mm long; truncate. Leaf-blades 30–60 cm long; 3–4 mm wide; stiff; aromatic (scent of camphor). Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins scaberulous.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 3–5; digitate; 1.3–2.5 cm long. Rhachis fragile at the nodes; flattened; villous on margins. Rhachis hairs 2 mm long. Rhachis internodes linear. Rhachis internode tip transverse. Raceme-bases filiform; 3–13 mm long.

Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; flattened; with a translucent median line (also present in internodes); villous; with 2 mm long hairs.

STERILE SPIKELETS Companion sterile spikelets well-developed; containing empty lemmas; lanceolate; 4 mm long; as long as fertile.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus 0.8 mm long; bearded; base obtuse; attached transversely.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; cartilaginous; much thinner above; without keels; keel-less except near apex; 8–12 -veined. Lower glume surface flat; pilose; hairy below. Lower glume margins ciliolate. Lower glume apex truncate. Upper glume lanceolate; 1 length of spikelet; 1-keeled; 3 -veined. Upper glume apex obtuse.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 3 mm long; hyaline; 0 -veined; without midvein; without lateral veins. Fertile lemma linear; 2.5 mm long; hyaline; without keel. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 16 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.

FLOWER Anthers 3.

DISTRIBUTION Asia-tropical: India.

NOTES Andropogoneae. Blatt & McCann 1994.

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