(Variant) Avena sterilis subsp.
ludoviciana (Durieu) M.Gillet & Magne,
Nouv. Fl. Fr. ed. 3 532 (1873).
(Variant) Avena sterilis subsp.
ludoviciana (Durieu) M.Gillet & Magne,
Nouv. Fl. Fr. ed. 3 532 (1873).
A. ludoviciana Durieu, .
A. persica Steud.,
Vegetative form. Mid-culm nodes rarely sparsely hairy or glabrous, not pigmented. Basal leaf sheaths glabrous or scabrous or pubescent. Ligule membranous, abaxially glabrous or hairy (hairs sparse, minute). Leaf blades adaxially scabrous; abaxially scabrous.
Reproductive organization. Rudimentary spikelets absent.
Hermaphrodite (`perfect') spikelets. Hermaphrodite spikelets 20-35 mm long. Lower glume 20-34 mm long. Upper glume 20-34 mm long. Rachilla glabrous. Callus 1.2-2 mm long. Lemma 15-25 mm long. Lemma margins ciliolate (obscurely). Lemma intercostal regions glabrous or silky, the hairs only at the base (lower 2/3s). Median awn 30-60 mm long; 10-16 mm below tip; arising from the mid-point of the lemma (or slightly below), golden-brown. Palea slightly shorter than the lemmas (shorter than the lemma), 12.7-18 mm long. Lodicules skewed triangular.
Common name. Ludo Wild Oats.
Vouchers. Specimens examined morphologically: S.A.: Waite Institute, grown from seed from crop near Naracoorte, 9 Oct. 1969, D.E.Symon 38132 (AD, CANB!, NSW, K, DAV,B). Qld: Theodore-Taroom road, c. 11 km from Theodore, on roadside in gravelly clay loam, annual with erect flowering culms, 28 Sept. 1968, S.L.Everist 8095 (BRI, CANB!). N.S.W.: Moree, 58 km N on Newell Hwy, 14 Oct. 1988, N.LLoyd 704 (CANB). A.C.T.: O'Connor, Canberra, disturbed waste area near roadside, 12 Dec. 1962, M.Gray 5312 (CANB); rubbish dump, CSIRO grounds, Black Mtn, Canberra, 2 Dec. 1958, M.Gray 4493 (CANB).
Notes. Economic importance: a weed of cereal crops.
References. Morphology: S.W.L.Jacobs & S.M. Hastings; Morris 62 (1991).
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.