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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.
Amphipogon turbinatus
HABIT Perennial. Cataphylls evident. Rhizomes short. Butt sheaths glabrous, or woolly. Culms erect, or geniculately ascending; 30–50 cm long. Culm-nodes glabrous. Ligule a fringe of hairs. Leaf-blades curved; filiform; involute; 10–15 cm long; 2–3 mm wide. Leaf-blade surface ribbed; pubescent; hairy adaxially. Leaf-blade apex pungent.
INFLORESCENCE Inflorescence a panicle.
Panicle capitate; obovate; 1.5 cm long; 1.5 cm wide. Primary panicle branches accrescent to a central axis; with evident branchlets on axis.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; 0.5 mm long.
STERILE SPIKELETS Basal sterile spikelets rudimentary.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 8–10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 2–3 mm long; pubescent; pungent. Floret callus hairs 0.2 mm long.
GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 8–10 mm long; 1 length of upper glume; membranous; without keels; 3 -veined. Lower glume surface pilose; hairy above. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 4–6 mm long. Upper glume lanceolate; 8–10 mm long; 1.2 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume surface pilose; hairy above. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 1–2 mm long.
FLORETS Fertile lemma oblong; 6–8 mm long; coriaceous; without keel; 3 -veined. Lemma surface pubescent; hairy all along. Lemma margins involute. Lemma apex lobed; 3 -fid; with margins splitting into evanescent supplementary lobes; incised 0.3–0.6 of lemma length; awned; 3 -awned. Principal lemma awn 6–8 mm long overall. Lateral lemma awns arising on apex of lobes; 6–8 mm long; subequal to principal. Palea oblong; 2 -veined; without keels. Palea surface pubescent; hairy on flanks. Palea apex lobed; 2 -fid; acuminate; awned; awns 6–8 mm long.
FLOWER Anthers 3.
FRUIT Caryopsis with free soft pericarp; obovoid; 2.5 mm long.
DISTRIBUTION Australasia: Australia.
NOTES Arundineae. Vickery.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
