(Variant) Arrhenatherum elatius (L.)
P.Beauv. ex J.Presl & C.Presl var. elatius
(Variant) Arrhenatherum elatius (L.)
P.Beauv. ex J.Presl & C.Presl var. elatius
Vegetative form. Basal culm internodes not swollen. Culms 3-5 noded. Mid-culm nodes constricted. Mid-culm internodes glabrous or puberulous (sparsely). Leaf blades not grooved.
Inflorescence. Rachides 90-150 mm long.
Hermaphrodite (`perfect') spikelets. Glumes slightly shorter than the proximal lemma or equalling the proximal lemma. Incomplete lemma veins extending the length of the veins; intercostal regions scabrous, the hairs over most of the dorsal surface. Proximal male florets with 1 stamens. Lemma intercostal regions scaberulous or scaberulous and villous (hairs antrorse, straight, stiff, as on callus, to 1 mm long), the hairs over the entire dorsal surface. Palea equalling the lemmas, acute or obtuse, entire; intercostal regions glabrous.
Common name. False Oatgrass.
Distribution. New South Wales, Australian Capital Territory, Victoria, Queensland, and South Australia.
Vouchers. Specimens examined morphologically: N.S.W.: Glen Elgin, 28 Nov. 1931, T.B.P. 195 (CANB). A.C.T.: Turner/Acton area, Canberra, rural grassland community in semi-shade site, alt. 1900 ft [580 m], probably an escape from improved pastures, 6 Nov. 1959, R.Pullen 1951 (CANB); CSIRO grounds, Black Mtn, Canberra, rural grassland, alt. c. 2000 ft [610 m], locally common grass near experimental plots, erect to c. 4 ft tall, 8 Dec. 1961, R.Pullen 3000 (CANB).
Material examined anatomically: N.S.W.: Glen Elgin, 28 Nov. 1931, T.B.P. 195 (CANB). A.C.T.: Turner/Acton area, Canberra, rural grassland community in semi-shade site, alt. 1900 ft [580 m], probably an escape from improved pastures, 6 Nov. 1959, R.Pullen 1951 (CANB); CSIRO grounds, Black Mtn, Canberra, rural grassland, alt. c. 2000 ft [610 m], locally common grass near experimental plots, erect to c. 4 ft tall, 8 Dec. 1961, R.Pullen 3000 (CANB).
References. Morphology: Tutin (1980) p. 216; Clayton & Renvoize (1986) p. 124; Hubbard (1976) p. 209; Wheeler et al. (1990) p. 118; Jacobs & Hastings (1992) ms p. 167-168. Illustrations: arrhen01.gif
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.
