Caladenia osmera (D.L.Jones) G.N.Backh.

Victorian Naturalist 124: 124 (2007) 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 15–30 cm tall. Leaf 6–12 cm long, 5–10 mm wide. Flowers 1 or 2, with a strong burnt plastic scent; perianth segments 2–4.5 cm long, greenish cream to cream with pink to reddish stripes and suffusions; sepals 2–4 mm wide at base, tapered to filiform, narrowly clubbed tails, club 5–12 mm long, with dark-coloured, sessile glands which are mostly tightly packed and contiguous; lateral sepals divergent, spreading to deflexed; petals spreading to deflexed, shorter than sepals, flattened at base, tapered to an acuminate clubbed apex. Labellum curved forward with apex recurved and lateral lobes curved upwards, lamina broadly ovate-lanceolate, obscurely 3-lobed, 10–13 mm long and 7–9 mm wide (when flattened), greenish cream, dark red distally; lateral lobes entire around curved base, then with marginal calli linear, 0.8–2.3 mm long, diminishing in size towards the apex of the mid-lobe; lamina calli in 4 or 6 rows, extending well onto labellum mid-lobe, linear or foot-shaped, to 1 mm long at base of lamina, decreasing in size towards apex. Flowers Sep.–Oct.

EGL. In Victoria apparently confined to tall open montane forests east from Bruthen on well-drained sandy loams.

Caladenia osmera is similar to, and could be confused with, a few other eastern species; see C. oreophila, C. peisleyi, C. montana and C. australis. It is also difficult to distinguish from the NSW species C. fitzgeraldii.

Created by: Jeff Jeanes, 2015-05-08
Updated by: Val Stajsic, 2018-02-15
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Caladenia
Higher taxa


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