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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 asperatus
HABIT Perennial. Culms 30–70 cm long; disarticulating at the nodes (upper nodes). Lateral branches ample. Leaf-sheaths longer than adjacent culm internode. Ligule a fringe of hairs. Leaf-blades involute; 1–3 mm wide. Leaf-blade surface scaberulous. Leaf-blade apex acute.
INFLORESCENCE Inflorescence a panicle. Peduncle antrorsely scabrous above.
Panicle spiciform; linear; 3–4 cm long; 0.5–0.8 cm wide.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 2.4–5 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; 2.4–5 mm long; 1 length of upper glume; membranous; without keels; 5–7 -veined. Lower glume surface pilose; with simple hairs and capitate hairs. Lower glume apex truncate, or obtuse; mucronate. Upper glume ovate; 2.4–5 mm long; 2–3.3 length of adjacent fertile lemma; membranous; without keels; 5–7 -veined. Upper glume surface pilose; with simple hairs and capitate hairs. Upper glume apex truncate, or obtuse; muticous, or mucronate.
FLORETS Fertile lemma oblong; 1.2–1.5 mm long; membranous, or cartilaginous; without keel; 9 -veined. Lemma lateral veins ribbed. Lemma surface pilose; hairy below; inner surface transversely fringed. Lemma margins ciliate. Lemma apex dentate; 9 -fid; awned; 9 -awned. Principal lemma awn 1.5–3.2 mm long overall; 1–1.5 length of lemma; limb ciliate. Lateral lemma awns arising on apex of lobes; subequal to principal; ciliate. Palea membranous. Palea keels ciliate; adorned above; with 0.5 of their length adorned. Palea surface pubescent, or pilose; hairy on back and on flanks. Apical sterile florets 2–3 in number; barren; in a clump. 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; 1–1.8 mm long. Hilum punctiform.
CLEISTOGENES AND VIVIPARY Cleistogenes present; in upper sheaths.
DISTRIBUTION Australasia: Australia.
NOTES Pappophoreae. Kakudidi.
ADDITIONAL CHARACTERS Lemma hairs exceeding base of awns.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
