Thelymitra atronitida Jeanes

Muelleria 14: 91 (2000) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: data deficient (k)

Flowering stem erect, straight, 30–50 cm tall, 1.5–3.5 mm diam., straw-coloured to purplish. Leaf linear to linear-lanceolate, attenuate, 15–35 cm long, 5–12 mm wide, leathery, canaliculate, ribbed abaxially, sheathing at base, dark green with a purplish base. Inflorescence 2–8(–16)-flowered, usually loose. Sterile bracts usually 2, rarely 3. Perianth segments lanceolate, elliptic or ovate, (7–)10–13 mm long, moderately deep blue with darker veins. Column thick, 5.5–7 mm long, pale blue; mid-lobe hooding the anther, tubular, inflated, dorsally compressed towards apex, gently curved through 90 deg., mostly glossy black, apex entire or emarginate, yellow, apical orifice small; lateral lobes converging 1.3–1.5 mm long, digitiform, porrect at base then curved upwards near the middle, each with a sub-terminal mop-like tuft of white hairs embracing mid-lobe. Anther inserted towards apex of column, shortly beaked. Flowers Oct.–Nov.

EGL, HSF. Also NSW, Tas. Found in heathy open forest, usually around the margins of grasstree plains, on well-drained sand or clay loams.

Thelymitra atronitida has been confused with T. malvina, but the latter usually has 3 sterile bracts, slightly larger flowers, brownish mid-lobe with a yellow apex and mauve or pink hair tufts on the lateral lobes of the column.

Created by: Jeff Jeanes, 2014-09-02
Updated by: Val Stajsic, 2018-02-15
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Thelymitra
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Thelymitra atronitida in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Thelymitra atronitida in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
East Gippsland Lowlands present native
Highlands-Southern Fall present native

State distribution

Distribution map
New South Wales