Lachnagrostis rudis subsp. rudis

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Glabrous, loosely tufted annual or short-lived perennial, culms weakly ascending, to 80 cm high. Leaf-blades flat, to 15 cm long and 5 mm wide; ligules obtuse, 1–3 mm long. Inflorescence a very sparse, open panicle, to 25 cm long with capillary branches. Spikelets 1.5–2.5(–3) mm long, pale green, rarely slightly purplish; glumes equal or the lower slightly longer, keeled, scabrous along the keel and often minutely scabrous along the sides; lemma 1.1–2.2 mm long, acute or obtuse, minutely irregularly fringed and sometimes 4-toothed at apex, slightly shorter than the glumes, firmly membranous, shining, glabrous except for the short callus, occasionally with a short awn attached just below apex, awn 0.1–1.4 mm long; palea slightly shorter than lemma; rachilla bristle plumose, about one-half as long as lemma; anthers c. 0.3–0.6 mm long.

Brid, DunT, EGL, GipP, Glep, OtR, VVP, WaP, WPro, Wim. Also SA, NSW. Uncommon, occurs in moist, shaded forests and swamp margins near the coast, scattered from near the South Australian border to Lake Tyers area in Gippsland.

Lachnagrostis ×ripulae is a presumed hybrid between L. filiformis and L. rudis subsp. rudis.

Flowers Dec.–Mar.

Created by: Neville Walsh, 2016-01-15
Updated by: Val Stajsic, 2019-01-07
Distribution map
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Lachnagrostis rudis subsp. rudis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Lachnagrostis rudis subsp. rudis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Wimmera present native
Glenelg Plain present native
Bridgewater present native
Victorian Volcanic Plain present native
Gippsland Plain present native
Warrnambool Plain present native
Dundas Tablelands present native
East Gippsland Lowlands present native
Wilsons Promontory present native
Otway Ranges present native