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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.
Axonopus bryoides
HABIT Annual; mat forming; clumped densely. Culms geniculately ascending; 3–6.5 cm long; 0.12 mm diam.; 4–5 -noded. Culm-internodes distally glabrous. Culm-nodes purple; glabrous. Leaf-sheaths open for most of their length; 6–12 cm long; without keel; ribbed; glabrous on surface. Ligule a fringe of hairs. Leaf-blades curved; filiform; conduplicate; 2–3 cm long; 0.2–0.3 mm wide. Leaf-blade venation with 3 secondary veins. Leaf-blade apex acuminate.
INFLORESCENCE Inflorescence composed of racemes. Peduncle 0.8–3 cm long; glabrous.
Racemes 1; single; drooping; unilateral; 0.8–2 cm long. Rhachis narrowly winged; folded longitudinally to embrace spikelets; 0.3–0.4 mm wide; terminating in a barren extension. Spikelet packing adaxial.
Spikelets appressed; solitary. Fertile spikelets sessile.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 1.4–1.6 mm long; falling entire.
GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume ovate; 1.4–1.8 mm long; 1 length of spikelet; hyaline; without keels. Upper glume surface asperulous. Upper glume apex acute.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret unlike other scales; lanceolate; 1.5–2 mm long; 0.6–0.8 length of spikelet; hyaline; light brown; 2 -veined; without midvein; distinctly veined; ciliate on margins; fringed above and below; bearing hairs 0.2–0.9 mm long; emarginate; awned. Awn of lower sterile floret terminal (on one lobe); 4.5–6 mm long. Fertile lemma ovate; dorsally compressed; 1.2–1.3 mm long; membranous; dark brown; without keel. Lemma margins flat; covering most of palea. Lemma apex acute. Palea 2 -veined. Palea apex dentate; 2 -fid.
FLOWER Anthers 2; 0.5–0.6 mm long.
FRUIT Caryopsis with adherent pericarp; oblong, or ovoid; 0.7–0.8 mm long. Embryo 0.33–0.5 length of caryopsis. Hilum elliptic; 0.25 length of caryopsis.
DISTRIBUTION South America: Brazil.
NOTES Paniceae. Rua, Oliveira & Valls 2007.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
