Acianthus collinus D.L.Jones

Hooded Mosquito-orchid

New Taxa Austral. Orchid. (Austral. Orchid Res. 2) 6 (1991) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: vulnerable (v); listed in Flora and Fauna Guarantee Act 1988

Flowering plant 6–15 cm tall. Leaf cordate, thin, 1.5–3.5 cm long, 1.5–3 cm wide, green above, reddish-purple beneath, entire or sometimes shallowly lobed. Flowers 2–9, translucent pink with a dark purple-red labellum; pedicel (including ovary) 5–8 mm long, subtended by small bract; dorsal sepal ovate, cucullate, 6–8 mm long, including apical point 1–2 mm long, usually slightly warty on upper surface; lateral sepals projected obliquely forwards, usually crossed, linear to linear-lanceolate, 7–11 mm long, apical point 1–2 mm long; petals spreading widely, linear-ovate to lanceolate, 3–5 mm long. Labellum on short claw, slightly decurved distally, cordate, 5–6 mm long, 3–4 mm wide, distal margins recurved to revolute, finely toothed, apex with short point; callus thick, fleshy, densely tuberculate towards the apex. Column incurved, almost terete, not winged. Flowers Jun.–Aug.

CVU, NIS, VRiv. Also NSW, ACT. Open forests on well-drained sandy or clay loam soils.

Currently known in Victoria by a few small populations in north-east Victoria in the Wangaratta-Chiltern area.

Created by: Jeff Jeanes, 2014-08-15
Updated by: Val Stajsic, 2018-02-15
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Acianthus
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Acianthus collinus in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Acianthus collinus in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Riverina present native
Central Victorian Uplands present native
Northern Inland Slopes present native

State distribution

Distribution map
New South Wales
Australian Capital Territory