Caladenia australis G.W.Carr

Southern Spider-orchid

Indig. Flora & Fauna Assoc. Misc. Pap. 1: 2 (1991) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: data deficient (k)

Flowering plant 12–30 (rarely to 40) cm tall. Leaf 8–17 cm long, 4–11 mm wide. Flowers solitary (rarely 2); perianth segments 2–4 cm long, yellowish-cream with a red central stripe, dorsal sepal incurved to drooping, lateral sepals and petals divergent, drooping; sepals flattened at base, 2–4 mm wide, tapered to a filiform, clubbed tail, club 4–14 mm long, with dark red-purple, contiguous, sessile glands; petals shorter than sepals, flattened at base, tapered to long acuminate apex. Labellum curved forward with apex recurved and lateral lobes erect, lamina ovate, 3-lobed, c. 12–15 mm long and c. 9 mm wide (when flattened), mostly dull, deep red, paler at base (without darker veins); marginal calli on lateral lobes linear or swollen apically, c. 1.5 mm long, diminishing in size towards entire, scalloped or broadly toothed mid-lobe; lamina calli in 4 or 6 rows, dull, barely extending beyond bend, linear to foot-shaped, to 2 mm long at base of lamina, decreasing in size towards apex. Flowers Sep.–Nov.

CVU, EGL, EGU, GipP, Glep, HSF, MuF, OtP, OtR, Strz, VVP, WaP, WPro. SA, ?NSW, Tas. Widespread in coastal and subcoastal heathy woodlands, usually on well-drained sandy soils.

Although uncommon, this is one of the most widespread of the taxa in the C. reticulata complex. Characterized by its colour and the drooping perianth segments.

Source: Entwisle, T.J. (1994). Orchidaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.
Updated by: Jeff Jeanes, 2015-04-17
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Caladenia
Higher taxa

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Caladenia australis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Caladenia australis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Glenelg Plain present native
Victorian Volcanic Plain present native
Murray Fans present native
Gippsland Plain present native
Otway Plain present native
Warrnambool Plain present native
Central Victorian Uplands present native
East Gippsland Lowlands present native
East Gippsland Uplands present native
Wilsons Promontory present native
Highlands-Southern Fall present native
Otway Ranges present native
Strzelecki Ranges present native

State distribution

Distribution map
State
South Australia
Victoria