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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 purpurascens
HABIT Annual, or perennial. Culms 6–75 cm long. Leaf-sheaths longer than adjacent culm internode. Ligule a fringe of hairs. Leaf-blades curled; 1–3 mm wide; glaucous. Leaf-blade surface scabrous. Leaf-blade apex attenuate; filiform.
INFLORESCENCE Inflorescence a panicle. Peduncle antrorsely scabrous above.
Panicle spiciform; linear to oblong; 1.5–11 cm long; 1–1.5 cm wide.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3.5–5.5 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; 3.5–5.5 mm long; 1 length of upper glume; membranous; without keels; 7–11 -veined. Lower glume surface pilose. Lower glume apex erose; acute, or acuminate. Upper glume ovate; 3.5–5.5 mm long; 2 length of adjacent fertile lemma; membranous; without keels; 7–11 -veined. Upper glume surface pilose. Upper glume apex erose; acute, or acuminate.
FLORETS Fertile lemma orbicular; 1.6–2.5 mm long; coriaceous; without keel; 9 -veined. Lemma lateral veins obscure. Lemma surface pilose; hairy below; inner surface transversely fringed. Lemma margins eciliate, or ciliolate. Lemma apex dentate; 9 -fid; awned; 9 -awned. Principal lemma awn 4–5 mm long overall; 2 length of lemma; limb plumose; glabrescent towards tip. Lateral lemma awns arising on apex of lobes; subequal to principal; of unequal width (outer wider); plumose. Palea membranous. Palea keels ciliolate; adorned above; with 0.5–0.66 of their length adorned. Palea surface pubescent; hairy on back; hairy below. Apical sterile florets 2–4 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; concavo-convex; 1–2 mm long. 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.
