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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.
Danthonidium gammiei
HABIT Annual. Culms erect; 10–60 cm long. Ligule a fringe of hairs. Leaf-blades 1.5–7.5 cm long; 1–2.3 mm wide. Leaf-blade margins scaberulous. Leaf-blade apex obtuse.
INFLORESCENCE Inflorescence composed of racemes. Peduncle pilose above.
Racemes 1; single; oblong; paucilateral; 2–5 cm long; bearing few fertile spikelets; bearing 3–10 fertile spikelets on each. Rhachis angular; puberulous on surface.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1 mm long.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 12–15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1–1.5 mm long; bearded; with longer hairs above; truncate. Floret callus hairs 0.25 length of lemma.
GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate; 12–15 mm long; 1.2–1.3 length of upper glume; chartaceous; without keels; 5 -veined. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 3–4 mm long. Upper glume lanceolate; 10–12 mm long; 3 length of adjacent fertile lemma; chartaceous; without keels; 3 -veined. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 2–3 mm long.
FLORETS Fertile lemma oblong; linear in profile; 4–5 mm long; coriaceous; without keel; 9 -veined. Lemma surface pubescent; with a transverse fringe of hair. Lemma margins convolute; covering most of palea. Lemma hairs 1–1.5 mm long. Lemma apex lobed; 2 -fid; with triangular lobes; incised 0.25–0.33 of lemma length; acute; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; flat below; 27 mm long overall; with twisted column. Column of lemma awn glabrous. Lateral lemma awns arising on apex of lobes; ascending; 5–7 mm long; shorter than principal. Palea oblong; 1 length of lemma; 2 -veined. Palea keels contiguous above a sulcus; ciliate. Palea apex dentate; 2 -fid; with excurrent keel veins. Apical sterile florets distinct from fertile; 1 in number; barren; linear; 1 mm long. Apical sterile lemmas pilose; adorned on margins.
FLOWER Lodicules 2; cuneate; membranous. Anthers 3. Stigmas 2; terminally exserted.
DISTRIBUTION Asia-tropical: India.
NOTES Arundineae. CEH.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
