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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.
Enneapogon robustissimus
HABIT Perennial. Butt sheaths pilose. Culms 50–107 cm long; 7 -noded. Lateral branches lacking, or sparse. Leaf-sheaths glabrous on surface, or pubescent. Ligule a fringe of hairs. Leaf-blades flat, or involute; 2–5 mm wide. Leaf-blade surface scaberulous (tetrorsely). Leaf-blade apex acuminate.
INFLORESCENCE Inflorescence a panicle. Peduncle retrorsely scabrous above.
Panicle spiciform; lanceolate; 3–11 cm long; 1.5–2.5 cm wide. Primary panicle branches 0.5–2.5 cm long.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3–5.6 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 3–5.6 mm long; 1 length of upper glume; membranous; without keels; 5–7 -veined. Lower glume surface scabrous; glabrous. Lower glume apex erose; truncate, or obtuse; mucronate. Upper glume ovate; 3–5.6 mm long; 2.5 length of adjacent fertile lemma; membranous; without keels; 5–7 -veined. Upper glume surface scabrous; glabrous. Upper glume apex erose; truncate, or obtuse; muticous, or mucronate.
FLORETS Fertile lemma oblong; 2–2.5 mm long; membranous; without keel; 9–11 -veined. Lemma lateral veins ribbed. Lemma surface pilose; hairy below (0.5–0.66 of length); inner surface transversely fringed. Lemma margins ciliate. Lemma apex dentate; 9 -fid; awned; 9 -awned. Principal lemma awn 3.3–4.6 mm long overall; 2 length of lemma; limb plumose; glabrescent towards tip. Lateral lemma awns arising on apex of lobes; subequal to principal; plumose. Palea membranous. Palea keels ciliate; adorned above; with 0.5–0.66 of their length adorned. Palea surface pubescent, or pilose; hairy on back; hairy all along. Palea apex muticous, or awned. Apical sterile florets 4 in number; barren. Apical sterile lemmas awned; 9 -awned. Apical sterile lemma awns ciliate.
FLOWER Lodicules 2. Anthers 3.
FRUIT Caryopsis with adherent pericarp; ellipsoid, or obovoid; plano-convex; 1.3 mm long. Embryo 0.8–0.9 length of caryopsis. Hilum punctiform.
DISTRIBUTION Australasia: Australia.
NOTES Pappophoreae. Kakudidi.
ADDITIONAL CHARACTERS Lemma hairs less than base of awns.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
