Caladenia longicauda subsp. calcigena

Caladenia longicauda subsp. calcigena Hopper & A.P.Br.

Arachnorchis longicauda subsp. calcigena

Coastal White Spider Orchid

Caladenia longicauda (White Spider Orchids)

Stephen Hopper & Andrew Brown in Nuytsia 14:112-113, Fig. 19G-L (2001)

Bunbury to Dongara, growing in sandy soils in coastal woodlands and shrublands.

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A common west coastal subspecies 250–400 mm high with a hairy leaf 120–200 mm long by 8–12 mm wide and up to four white to creamy-white flowers 50–70 mm across.

It is often confused with Daddy long-legs White Spider Orchid (Caladenia longicauda subsp. borealis) but is distinguished by its longer, distinctly pendulous petals and lateral sepals, its apical labellum lamina calli that tend to aggregate in an irregular agglomeration rather than terminating in neat rows and its confinement to calcareous sands near the coast.

Not Listed