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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 milsumii

HABIT Perennial; caespitose. Culms erect; 25–50 cm long; wiry. Culm-nodes pubescent. Leaves cauline. Leaf-sheaths 3 cm long; outer margin hairy. Ligule a ciliolate membrane. Leaf-blades involute; 4–8 cm long; 1–2.5 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes; embraced at base by subtending leaf. Peduncle pilose above.

Racemes 3–4; digitate; 4–6 cm long. Rhachis fragile at the nodes; subterete; pilose on surface; villous on margins. Rhachis hairs 1 mm long. Rhachis internodes linear; 3 mm long. Rhachis internode tip transverse.

Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster. Pedicels linear; angular; 3 mm long; villous; with 1 mm long hairs.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; dorsally compressed; 3 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus pilose; 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; 6 -veined. Lower glume surface flat, or concave; pilose. Lower glume apex dentate; 2 -fid; awned; 2 -awned. Lower glume awn 1.8–2.9 mm long. Upper glume lanceolate; 1-keeled. Upper glume surface pubescent. Upper glume apex emarginate; awned; 1 -awned.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret linear; hyaline; ciliate on margins; fringed above. Fertile lemma lanceolate; 2.6 mm long; hyaline; without keel; 3 -veined. Lemma margins ciliolate. Lemma apex lobed; 2 -fid; incised 0.5 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 11 mm long overall; with twisted column. Column of lemma awn 3 mm long; hispidulous. Palea oblong; 1 mm long; hyaline.

FLOWER Anthers 3; 1.6 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Andropogoneae. Gilliland 1993.

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