Apera interrupta (L.) P.Beauv.

Dense Silky-bent

Ess. Agrostogr. 151 (1812) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Slender annual, 10–70 cm high; culms erect or geniculate. Leaves basal and cauline; sheaths glabrous, often reddish; blades flat, to 12 cm long, 1–4 mm wide, flat when fresh, but becoming inrolled on drying, scabrous to shortly hispid on veins adaxially, abaxially smooth and glabrous; ligule obtuse to truncate, toothed, 2–5 mm long. Panicles contracted, moderately dense but often interrupted near base, 3–20 cm long, light green to purplish. Spikelets 2–2.8 mm long; pedicel 0.5–2 mm long; Glumes 1.5–2.8 mm long, the upper 0.5–0.8 mm longer than lower, scaberulous along keel in upper half; callus glabrous or with a few hairs to c. 0.2 mm long; lemma oblong to lanceolate, mostly slightly shorter than or equal to upper glume, rarely slightly longer, acute, indistinctly nerved, scabrous above the middle, otherwise smooth; awn c. 8 mm long, attached c. 0.5 mm below lemma apex, straight or weakly flexuose; palea c. three-quarters as long as lemma. Flowers Dec.–Feb.

*VAlp. Known in Australia from areas around the quarry site of Basalt Hill and nearby areas on the Bogong High Plains. First noted in 2000 from the quarry site at Basalt Hill, since noted along roadsides and in native vegetation in the general area.

Created by: Neville Walsh, 2015-07-06
Updated by: Val Stajsic, 2018-10-24
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Poaceae
genus Apera
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Apera interrupta in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Apera interrupta in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Alps present naturalised

State distribution

Distribution map
Australian Capital Territory