Corunastylis densa (Fitzg.) D.L.Jones & M.A.Clem.

Orchadian 15: 37 (2005) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: vulnerable (v)

Flowering plants 3–6 cm tall. Leaf lamina 6–12 mm long, projecting through the basal flowers of the inflorescence and outwards from the peduncle. Inflorescence 8–15 mm long, densely crowded. Flowers 5–25, reddish brown to dark purplish, 3–4 mm across, nodding; perianth segments sharply pointed; dorsal sepal ovate, 3–3.5 mm long, c. 1.5 mm wide, margins entire; lateral sepals divergent, linear-lanceolate, 3.5–4.5 mm long, c. 1 mm wide, apex with a small white beady gland; petals ovate, c. 2.5 mm long and 1 mm wide, apex with a small white beady gland. Labellum elliptic to obovate, 2–2.2 mm long, 1–1.2 mm wide, margins irregular or minutely denticulate; callus oblong, occupying most of the ventral surface and extending to the labellum apex. Column wings smooth or slightly scabrid. Flowers Dec.–Feb.

HSF, VAlp. Also NSW. Extremely localized in Victoria where found only on the Mt Wellington plateau and the Snowy Plains in the central highlands, growing among low shrubs in shallow soil over rocks.

Similar in appearance to Corunastylis leptochila, but that species has a narrower labellum, and is confined, as far as is known, to the Otways and flowers earlier.

Jones (2017) considers that Corunastylis nuda in the strict sense is restricted to mid- to south-eastern New South Wales. The taxonomic status of Victorian plants currently referred to this name is under review.

Created by: Jeff Jeanes, 2015-02-20
Updated by: Val Stajsic, 2018-02-15
 
References

Jones, D.L. (2017). Characterisation of Corunastylis nudiscapa, Corunastylis densa (Orchidaceae: Prasophyllinaee) and the description of a Corunastylis leptochila, a related, new species., Australian Orchid Review 82(5): 48-56.

Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Corunastylis
Higher taxa

Victoria

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

State distribution

Distribution map
State
New South Wales
Australian Capital Territory
Victoria