GrassBase - The Online World Grass Flora

Descriptions

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

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

Manisuris

HABIT Perennial. Culms 15–70 cm long. Ligule an eciliate membrane.

INFLORESCENCE Inflorescence composed of racemes; terminal and axillary.

Racemes single; unilateral. Rhachis fragile at the nodes; subcylindrical and excavated. Spikelet packing abaxial. Rhachis internodes cuneate. Rhachis internode tip transverse; crateriform.

Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels fused to internode.

STERILE SPIKELETS Companion sterile spikelets well-developed; fused to and deciduous with fertile spikelet belonging to segment above. Companion sterile spikelet glumes muticous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 2.5–3 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely.

GLUMES Glumes exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; indurate; 2-keeled; winged on keel. Lower glume surface transversely waisted; without pits. Lower glume apex emarginate. Upper glume oblong; membranous; 1-keeled; 3 -veined.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret hyaline. Fertile lemma elliptic; hyaline; without keel; wingless. Lemma surface unwrinkled; without grooves.

DISTRIBUTION Tropical Asia.

Please cite this publication as detailed in How to Cite Version: 27th January 2014.