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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.
Buchlomimus nervatus
HABIT Perennial. Stolons present. Culms erect (male), or prostrate (female); 5–15 cm long. Ligule a fringe of hairs. Leaf-blades flat, or involute; 3–8 cm long; 2–3 mm wide. Leaf-blade surface pilose.
INFLORESCENCE Dioecious. Inflorescence composed of racemes.
Racemes 2–3; borne along a central axis; unilateral; 0.8–1.5 cm long. Central inflorescence axis 0.4–0.6 cm long. Rhachis deciduous from axis; flattened; terminating in a barren extension; extension bristle-like. Spikelet packing 2 -rowed.
Spikelets pectinate; solitary. Fertile spikelets pedicelled. Male spikelets sessile. Pedicels oblong.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets lanceolate; dorsally compressed; 8–10 mm long; falling entire; deciduous with accessory branch structures.
GLUMES Glumes dissimilar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 0.66–0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 8–10 mm long; membranous; without keels; 2–5 -veined. Upper glume apex acute.
FLORETS Fertile florets female. Fertile lemma elliptic; 5–6 mm long; cartilaginous; without keel; 3 -veined. Lemma surface with 2 longitudinal grooves. Lemma apex awned; 3 -awned. Principal lemma awn 5 mm long overall. Lateral lemma awns 4 mm long; shorter than principal. Palea 1 length of lemma. Palea apex awned; awns 0.5–1 mm long. Apical sterile florets 3 in number; barren; in a clump; linear; 2 mm long. Apical sterile lemmas awned; 3 -awned. Apical sterile lemma awns 15–18 mm long.
FLOWER Lodicules 2; cuneate; fleshy. Anthers 3; 3 mm long.
FRUIT Caryopsis with adherent pericarp; ellipsoid. Embryo 0.9 length of caryopsis.
MALE Male inflorescence similar to female; of racemes along a central axis; with pectinate racemes. Male spikelets distinct from female; 1 flowered; without rhachilla extension; persistent; lanceolate; 4.5–6 mm long; glabrous. Male spikelet glumes 2; muticous. Male spikelet lemma 3 -veined; muticous.
DISTRIBUTION North America: Mexico.
NOTES Cynodonteae. WDC.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
