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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.
Eulalia speciosa
HABIT Perennial; caespitose. Rhizomes short. Culms erect; 70–120 cm long; 3–6 mm diam.; 5–7 -noded. Culm-internodes 6–35 cm long; distally glabrous. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths pubescent. Ligule an eciliate membrane, or a ciliolate membrane; truncate. Leaf-blades 20–50 cm long; 4–7 mm wide. Leaf-blade surface glabrous; hairless except near base. Leaf-blade apex acute.
INFLORESCENCE Inflorescence composed of racemes. Peduncle pubescent above.
Racemes 5–8; digitate; 10–15 cm long; 4–6 mm wide. Central inflorescence axis 3–4 cm long. Rhachis fragile at the nodes; ciliate on margins. Rhachis hairs white, or yellow. Rhachis internodes linear; 3–4 mm long. Rhachis internode tip transverse.
Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster. Pedicels linear; angular; 2.5–3.5 mm long; ciliate.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; acute; 4.75–5.2 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely. Spikelet callus hairs 0.2–0.33 length of spikelet.
GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; chartaceous; 2-keeled; keeled above; 2 -veined. Lower glume surface flat, or concave; pilose; hairy below. Lower glume margins ciliate. Lower glume hairs white, or yellow. Upper glume elliptic; 1 length of spikelet; 3 -veined. Upper glume surface pilose. Upper glume margins ciliate. Upper glume apex obtuse; muticous.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate, or oblong; 4.5–5 mm long; hyaline; ciliolate on margins. Fertile lemma oblong; hyaline; without keel. Lemma apex lobed; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 15–20 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
FLOWER Anthers 3; 3.25–3.5 mm long.
DISTRIBUTION Asia-temperate: China and eastern Asia. Asia-tropical: India, Indo-China, and Malesia.
NOTES Andropogoneae. Koyama 1994.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
