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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.
Eragrostis vulcanica
HABIT Perennial; caespitose; clumped densely. Culms erect; 50 cm long. Culm-nodes glabrous. Lateral branches lacking. Leaf-sheaths mostly shorter than adjacent culm internode; without keel; inner surface glabrous. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs. Leaf-blades erect; 1–2 mm wide. Leaf-blade margins smooth. Leaf-blade apex attenuate; filiform.
INFLORESCENCE Inflorescence a panicle.
Panicle open; lanceolate; 30 cm long; 7 cm wide. Primary panicle branches appressed, or ascending; bearing spikelets almost to the base. Panicle axis smooth.
Spikelets solitary. Fertile spikelets sessile.
FERTILE SPIKELETS Spikelets comprising 10 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; acute; 5 mm long; breaking up at maturity; rhachilla persistent; retaining paleas.
GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 1 mm long; 0.66 length of upper glume; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1.5 mm long; 0.75–1 length of adjacent fertile lemma; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acute.
FLORETS Fertile lemma ovate; 1.5–2 mm long; chartaceous; keeled; 3 -veined. Lemma midvein scaberulous. Lemma apex acute. Apical sterile florets resembling fertile though underdeveloped.
FRUIT Caryopsis with adherent pericarp.
DISTRIBUTION Asia-tropical: Papuasia.
NOTES Eragrostideae. Jedwabnik 2001.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.