Thelymitra basaltica Jeanes

Muelleria 19: 35 (2004) APNI

Taxonomic status:Accepted

Occurrence status:Endemic

Establishment means:Native

Threat status:Victoria: endangered (e)

Flowering stem erect, straight, 10–30 cm tall, 1.5–3.3 mm diam., green to purplish, usually shorter than leaf. Leaf linear to linear-lanceolate, attenuate, 12–30 cm long, 5–15 mm wide, very fleshy, canaliculate, ribbed abaxially, sheathing at base, dark green with a purplish base. Inflorescence 2–8-flowered, open. Sterile bracts 1, rarely 2. Perianth segments lanceolate to ovate, 6–11 mm long, pale blue to pale purplish blue. Column slender, 4–6.5 mm long, pale blue; mid-lobe expanded into hood over the anther, tubular, slightly inflated, curved gently forward, yellow with a reddish brown collar, apex entire to shallowly bilobed; lateral lobes converging 0.8–1.3 mm long, digitiform, porrect at base then bent upwards sharply near the middle at c. 90 deg., each with a toothbrush-like arrangement of white hairs embracing the apex of the mid-lobe. Anther inserted about mid-way along column, shortly beaked. Flowers Sep.–Oct.

CVU, VVP. Grassland on sandy brown volcanic loams.

Apparently endemic to Victoria where only known with certainty from the Rokewood area.

Distinguished by the large fleshy leaf that is usually as long as the entire inflorescence.

Often grows in clumps by vegetative reproduction.

Created by: Jeff Jeanes, 2014-09-02
Updated by: Jeff Jeanes, 2014-09-04
Hero image
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 basaltica in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Thelymitra basaltica in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native
Central Victorian Uplands present native

State distribution

Distribution map