New! - Search other data sources for Eulalia irritans

Help - Wrong Description?

Kew Data Sources

Kew's Herbarium Catalogue
ePIC - Electronic Plant Information Centre

External Data Sources

Note - this takes you off of our website
Use your browser's back button to return to this page

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 irritans

HABIT Annual. Culms erect; 60–100 cm long; 6–8 -noded. Leaf-sheaths glabrous on surface. Ligule a ciliolate membrane; 0.5 mm long. Leaf-blades filiform; involute; 25–50 cm long; 1 mm wide; glaucous. Leaf-blade surface pubescent; hairy adaxially. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes numerous; digitate; erect, or ascending; 3–5 cm long. Central inflorescence axis 1–3 cm long. Rhachis tough, or fragile at the nodes; 0.4 mm wide; ciliate on margins. Rhachis internodes linear. Rhachis internode tip transverse.

Spikelets in pairs. Fertile spikelets sessile and pedicelled, or pedicelled (when tough); 2 in the cluster. Pedicels linear; angular; 1–2.5 mm long; ciliate.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.5–3 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus 1 mm long; bearded; base acute; attached obliquely. Spikelet callus hairs 1–1.5 mm long.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; chartaceous; 2-keeled; keeled above; 2 -veined. Lower glume surface convex, or flat; pilose. Lower glume hairs white. Lower glume apex dentate; 2 -fid. Upper glume oblong; 1 length of spikelet; 1-keeled; 1–3 -veined. Upper glume lateral veins absent, or obscure. Upper glume surface pilose. Upper glume hairs white. Upper glume awned; 1 -awned. Upper glume awn 5–7 mm long.

FLORETS Basal sterile florets with vestigial lower floret. Fertile lemma oblong; hyaline; without keel. Lemma apex lobed; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; bigeniculate; 30–50 mm long overall; with twisted column. Column of lemma awn ciliate; with 1.5–2 mm long hairs. Palea absent or minute.

FLOWER Anthers 3; 1 mm long.

DISTRIBUTION Asia-tropical: Indo-China, Malesia, and Papuasia. Australasia: Australia.

NOTES Andropogoneae. Reeder 1993.

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