Pterostylis saxum

Pterostylis saxum (D.L.Jones & C.J.French) D.L.Jones & C.J.French

Diplodium saxum

Castle Rock Snail Orchid

Pterostylis nana (Snail Orchids)

David Jones & Christopher French in Australian Orchid Review 84(1): 26-28, Fig. 3 (2019) as Diplodium saxum

Stirling Range to Northcliffe, growing in loamy soil amongst boulders.

· · · · · · · Aug Sep Oct · ·

A rock loving species 80–150 mm high with four to six leaves forming a ground-hugging or ascending basal rosette 16–30 mm across, two to three cauline leaves and one (rarely two) translucent, green and white flowers 7–9 mm across.

It is distinguished from the related Slender Snail Orchid (Pterostylis crispula) by its less numerous, smooth margined rosette leaves, larger flowers and shorter sepals.

Priority Two