Agrostis aequata Nees,
J. Bot. (Hooker) 2: 412 (1843).
Agrostis aequata Nees,
J. Bot. (Hooker) 2: 412 (1843).
Deyeuxia aequata (Nees) Benth., Fl. Austral. 7: 578 (1878); Calamagrostis aequata (Nees) J.M.Black, Fl. S. Australia 1: 70 (1922)
Illustrated in: J.D.Hooker, Fl. Tasman. 2: 159 (1860).
Vegetative form. Annual, erect or geniculate, caespitose. Culms to 75 cm high, c. 4 noded. Mid-culm nodes glabrous, exposed or hidden by the leaf sheaths. Leaves non-auriculate. Basal leaf sheaths not keeled, terete, glabrous (upper sheaths scabrous), with the veins equally striate. Ligule 2-3 mm long, membranous, obtuse, becoming laciniate, abaxially hairy. Leaf blades flat, linear, to 130 mm long, 1.5-2.5(-4) mm wide; adaxially puberulous, shallowly grooved; abaxially scabrous; with margins scabrous; convolute in bud.
Reproductive organization. Plants bisexual. Incomplete spikelets absent. Inflorescence of chasmogamous spikelets.
Inflorescence. Inflorescence a panicle, green or purple, open, symmetrical, fully exserted (shortly). Rachides 150-250 mm long, scabrous. Primary inflorescence branches scabrous, spreading to divaricate (numerous, bare at the base, 2-3-nately divided), filiform, verticillate. Spikelets 1 on a typical ultimate inflorescence branch (to several).
Hermaphrodite (`perfect') spikelets. Hermaphrodite spikelets pedicellate, 1.75-2(-2.5) mm long, laterally compressed, not disarticulating as a separate unit, disarticulating above the glumes. Pedicels slender, scabrous. Glumes two per spikelet, similar, equal in length, about equalling the florets or exceeding the florets, equalling the proximal lemma or longer than the proximal lemma. Lower glume ovate, membranous, keeled (almost to the base), acute, muticous, margin membranous, apically margin ciliolate; 1 veined, midvein scabrous; intercostal regions glabrous, or intercostal regions scaberulous (towards the keel). Upper glume ovate, membranous, keeled (almost to the base), acute, muticous, margin membranous, margin ciliolate; 1 veined, midvein scabrous; intercostal regions glabrous, or intercostal regions scaberulous (towards the keel). Rudimentary florets absent. Incomplete florets absent. Hermaphrodite florets 1 per spikelet. Rachilla hairy or glabrous, apically prolonged or not apically prolonged; prolongation to 0.3 mm long. Callus present, blunt, glabrous (or sparsely and minutely bearded), hairs 0.2-0.5 mm long. Lemma less firm than the glumes, laterally compressed, oblong to ovate, 1.4-1.7 mm long, shining, firmly membranous, not keeled, truncate, dentate, obscurely 5 -lobed; muticous. Lemma margins ciliate (at apex, i.e. the teeth). Lemma 5 veined. Lemma veins prominent (at the apex), glabrous; intercostal regions glabrous. Palea fully developed, slightly shorter than the lemmas, membranous, 2-keeled (?). Lodicules 2, hyaline, ovate. Stamens 3. Anthers 0.5-0.7 mm long. Ovary glabrous. Styles 2, free to their bases.
Fruit. Fruit oblong.
Distribution. Endemic. Tasmania, New South Wales, Victoria, and South Australia.
Ecology. Mesophytic. In coastal habitats, in beach sands, coastal woodlands and coastal ranges. Flowers spring-summer.
Classification. Pooideae; Poodae; Aveneae.
References. Morphology: Morris 82 (1991); Jacobs & Hastings (1994); Vickery 106 (1941).
Cite this publication as:
C.M. Weiller, M.J.
Henwood, J. Lenz and L. Watson (1995 onwards). `Pooideae (Poaceae) in
Australia - Descriptions and Illustrations'. URL
http://muse.bio.cornell.edu/delta/
Dallwitz
(1980) and Dallwitz, Paine and Zurcher (1993)
should also be cited.