Agrostis aff. parviflora
Agrostis aff. parviflora
Vegetative form. Annual or perennial, slender, weak, erect or ascending, occasionally shortly stoloniferous or caespitose. Leaves mostly basal. Culms to 50 cm high, 2 noded. Mid-culm nodes glabrous. Mid-culm internodes scabrous (below the nodes). Leaves non-auriculate. Basal leaf sheaths not keeled, terete, glabrous or scabrous, with the veins equally striate. Ligule to 5 mm long, membranous, obtuse, becoming laciniate. Leaf blades flat, to 130 mm long, to 2.5 mm wide; adaxially glabrous to adaxially scabrous; abaxially glabrous to abaxially scabrous; with margins scabrous; convolute in bud.
Reproductive organization. Plants bisexual. Incomplete spikelets absent. Inflorescence of chasmogamous spikelets.
Inflorescence. Inflorescence a panicle (few flowered), green to purple, open, symmetrical (pyramidal), fully exserted. Peduncles scabrous. Rachides to 120 mm long. Primary inflorescence branches stiffly spreading to divaricate (dividing at the midpoint).
Hermaphrodite (`perfect') spikelets. Hermaphrodite spikelets pedicellate, 1.5-2.5 mm long, laterally compressed, not disarticulating as a separate unit, disarticulating above the glumes. Pedicels slender. Glumes two per spikelet, not diverging from the spikelets, similar, subequal or unequal in length, exceeding the florets, longer than the proximal lemma. Lower glume longer than the upper glume, 1.75-2.5 mm long, membranous, keeled, acuminate to acute, muticous, margin hyaline (sometimes); 1 veined, midvein scabrous (towards apex). Upper glume 1.5-2.25 mm long, membranous, keeled, acuminate to acute, muticous, margin hyaline (sometimes); 1 veined, midvein scabrous (towards apex). Rudimentary florets absent. Incomplete florets absent. Hermaphrodite florets 1 per spikelet. Callus present, blunt. Lemma less firm than the glumes, laterally compressed, ovate, 1.3-1.8 mm long, not keeled, truncate; muticous. Palea vestigial or absent, minute, hyaline. Lodicules 2, hyaline, ovate. Stamens 3. Anthers 0.4-0.5 mm long. Ovary glabrous. Styles 2, free to their bases.
Fruit. Fruit 1.3-1.5 mm long, glabrous.
Distribution. Endemic. Tasmania, New South Wales, and Victoria (ACT ??).
Ecology. Mesophytic; usually in open habitats. Grows in depressions, sod tussock grasslands, and in fens, bogs and wet areas in alpine herbfields, and at the margins of rainforests. Flowers summer.
Classification. Pooideae; Poodae; Aveneae.
This is the taxon described by Morris (1991) as A. sp. aff. parviflora, and by Jacobs & Hastings (1994) as A. species B. It resembles A. parviflora.
References. Morphology: Morris 78 (1991); Jacobs & Hastings (1994).
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.