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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.
Anthoxanthum redolens
HABIT Perennial; caespitose. Rhizomes short. Basal innovations extravaginal. Culms erect; 50–100 cm long; 4–5 -noded. Culm-nodes glabrous. Lateral branches lacking. Ligule an eciliate membrane; 4–9 mm long; obtuse. Leaf-blades 15–45 cm long; 5–12 mm wide; stiff; aromatic. Leaf-blade surface ribbed (deeply); scaberulous; rough adaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
INFLORESCENCE Inflorescence a panicle.
Panicle open; lanceolate; 10–20 cm long. Primary panicle branches 2 -nate; 5–10 cm long. Panicle branches capillary; pilose.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1–7 mm long; ciliate.
FERTILE SPIKELETS Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 6–8 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes persistent; similar; shorter than spikelet, or reaching apex of florets, or exceeding apex of florets; thinner than fertile lemma; shiny; gaping. Lower glume ovate; 5–8 mm long; 1 length of upper glume; hyaline; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse, or acute. Upper glume ovate; 5–8 mm long; 1.1–1.8 length of adjacent fertile lemma; hyaline; 1-keeled; 3 -veined. Upper glume apex obtuse, or acute.
FLORETS Basal sterile florets similar; male; with palea; attached to and deciduous with the fertile. Lemma of lower sterile floret elliptic; 6.5 mm long; 1.5 length of fertile lemma; chartaceous; 1-keeled; 5 -veined; scaberulous; ciliolate on margins; obtuse; mucronate. Awn of lower sterile floret dorsal. Fertile florets bisexual, or female. Fertile lemma ovate; 4.5 mm long; cartilaginous; shiny; without keel; 5 -veined. Lemma surface pilose; hairy above. Lemma margins convolute; covering most of palea. Lemma apex acute; mucronate. Palea elliptic; 1 -veined; 1-keeled.
FLOWER Lodicules 2. Anthers 2 (bisexual), or 3 (male); 1.5–3.5 mm long. Staminodes present. Stigmas plumose. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp.
DISTRIBUTION Asia-tropical: Papuasia. Australasia: Australia and New Zealand. South America: western South America and southern South America. Antarctic: Subantarctic islands.
NOTES Aveneae. Fl NSW 1993.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
