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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Anthoxanthum submuticum

HABIT Perennial; caespitose. Rhizomes short. Basal innovations extravaginal. Culms erect; 30–60 cm long. Culm-nodes glabrous. Lateral branches lacking. Ligule an eciliate membrane; 4–9 mm long; erose; truncate. Leaf-blades 5–25 cm long; 4–8 mm wide; stiff; aromatic. Leaf-blade surface ribbed (lightly); scaberulous; rough adaxially. Leaf-blade margins scabrous. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate; 5–18 cm long. Primary panicle branches 2 -nate. Panicle branches capillary; pilose.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 5–6 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; 5–6 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; 5–6 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; 5.5 mm long; 1.5 length of fertile lemma; chartaceous; 1-keeled; 5 -veined; scaberulous; ciliolate on margins; obtuse; muticous, or mucronate. Fertile lemma ovate; 3.5 mm long; cartilaginous; shiny; without keel; 5 -veined. Lemma surface pubescent; hairy above. Lemma margins convolute; covering most of palea. Lemma apex acute. Palea elliptic; 1 -veined; 1-keeled.

FLOWER Lodicules 2. Anthers 2 (bisexual), or 3 (male). Stigmas plumose. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Australasia: Australia.

NOTES Aveneae. Fl NSW 1993.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.