Pterostylis tylosa

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

Pterostylis sp. 'Chudalup'; Diplodium tylosum

Mt Chudalup Snail Orchid

Pterostylis nana (Snail Orchids)

David Jones & Christopher French in Australian Orchid Review 84(3): 42-43 (2019) as Diplodium tylosum

Mt Chudalup, growing in soil pockets on granite outcrops.

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A geographically restricted species 60–100 mm high with four to six basal leaves that form an ascending rosette 16–40 mm across, two to three cauline leaves and one (rarely two) translucent, green and white flowers 5–6 mm across.

It is distinguished from the related Lort River Snail Orchid (Pterostylis lortensis) by its generally shorter stature, shorter lateral sepals and more westerly distribution.

Priority Two