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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.
Sporobolus hintonii
HABIT Annual. Glands capitate (on leaf margins), or raised crateriform (elsewhere). Culms erect; 50–100 cm long; 4–6 -noded. Culm-internodes glandular (below nodes). Lateral branches sparse. Leaf-sheaths glandular (on keel); keeled; outer margin hairy. Ligule a fringe of hairs. Leaf-blades 6–12 cm long; 4–8 mm wide. Leaf-blade surface glabrous. Leaf-blade margins glandular; serrulate; ciliate (capitate glandular); hairy at base.
INFLORESCENCE Inflorescence a panicle.
Panicle open; oblong; 20–30 cm long; 10–15 cm wide. Primary panicle branches 1 -nate; 4–8 cm long. Panicle axis tuberculate (glandular); pilose. Panicle branches capillary; glandular; tuberculate; pilose.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 2.6–3 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes deciduous; reaching apex of florets. Lower glume elliptic; 1.5 mm long; 0.5–0.6 length of upper glume; membranous; without keels. Lower glume apex obtuse. Upper glume elliptic; 2.4–2.8 mm long; 0.7 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
FLORETS Fertile lemma elliptic; 2.6–3 mm long; membranous; without keel; 1 -veined. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Palea keels approximate.
FLOWER Anthers 2.
FRUIT Caryopsis with free soft pericarp; oblong; 1.5 mm long.
DISTRIBUTION North America: Mexico.
NOTES Eragrostideae. Hartley 1994.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.