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Descriptions

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

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

Eulalia pallens

HABIT Perennial; caespitose. Butt sheaths glabrous. Culms erect; 60–90 cm long. Leaf-sheaths glabrous on surface. Ligule a ciliolate membrane. Leaf-blades revolute; 15–25 cm long; 1.2–2.5 mm wide. Leaf-blade surface pubescent. Leaf-blade margins scabrous. Leaf-blade apex acuminate; filiform.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 5; digitate; 5–10 cm long. Rhachis fragile at the nodes; subterete; pilose on surface; villous on margins. Rhachis internodes linear. Rhachis internode tip transverse.

Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster. Pedicels linear; angular; villous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 3–4 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus base obtuse; attached transversely.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; cartilaginous; 2-keeled; keeled above; 2 -veined. Lower glume surface pilose. Lower glume apex dentate; 2 -fid. Upper glume lanceolate; 2-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume surface pilose. Upper glume margins ciliate. Upper glume awned; 1 -awned.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret linear; 2.5–3 mm long; hyaline; ciliate on margins. Fertile lemma lanceolate; 2.2–3 mm long; hyaline; without keel. Lemma margins ciliolate. Lemma apex lobed; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 6–10 mm long overall; with twisted column. Column of lemma awn hispidulous. Palea ovate, or orbicular; 2 mm long; hyaline.

FLOWER Anthers 3; 2–2.5 mm long.

FRUIT Caryopsis with adherent pericarp.

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

NOTES Andropogoneae. Fl Assam 1993.

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