GrassBase - The Online World Grass Flora


W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Sporobolus multiramosus

HABIT Annual; caespitose. Basal innovations intravaginal. Culms geniculately ascending; slender; 18–50 cm long; 0.5 mm diam.; 6–7 -noded. Lateral branches ample. Leaf-sheaths mostly shorter than adjacent culm internode; glabrous on surface. Leaf-sheath oral hairs ciliate; 1–1.2 mm long. Ligule a fringe of hairs; 0.3–4 mm long. Leaf-blades flat, or conduplicate, or involute, or convolute; 2–13 cm long; 1–1.8 mm wide. Leaf-blade margins glabrous, or ciliate.

INFLORESCENCE Inflorescence a panicle; terminal and axillary.

Panicle spiciform; linear; 3–7 cm long; 0.2–0.3 cm wide. Primary panicle branches appressed; 0.4–1.3 cm long. Panicle axis glandular.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels glandular.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 2–2.4 mm long; 0.8–1 mm wide; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; similar; exceeding apex of florets. Lower glume oblong; 2–2.4 mm long; 0.5 length of upper glume; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 2–2.4 mm long; 1.1 length of adjacent fertile lemma; membranous; without keels; 1–3 -veined. Upper glume lateral veins absent, or obscure. Upper glume apex acute.

FLORETS Fertile lemma ovate; 2–2.2 mm long; 0.3–0.5 mm wide; membranous; without keel; 1 -veined. Lemma apex acute. Palea 1.8–2.2 mm long; 2 -veined. Palea keels approximate. Palea apex cuspidate.

FLOWER Anthers 3; 0.5–0.8 mm long.

FRUIT Caryopsis with free soft pericarp; oblong; without sulcus; 1.7–2 mm long; dark brown.

DISTRIBUTION South America: Brazil.

NOTES Eragrostideae. Longhi-Wag 2001.

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