Pterostylis angulata

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

Pterostylis sp. 'Helena River'; Diplodium angulatum

Helena River Snail Orchid

Pterostylis nana (Snail Orchids)

David Jones & Christopher French in Australian Orchid Review 82(4): 42-44, Fig. 1 (2017) as Diplodium angulatum

West of York to Lake Muir, growing in sandy-clay and clay soils on the margins of swampy flats and the slopes to seasonal creeks.

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A moisture loving species 70–180 mm high with four to seven leaves forming a ground-hugging or ascending basal rosette 25–35 mm across, three to seven cauline leaves and one (rarely two) translucent, green and white flowers 6–8 mm across.

It is distinguished from the related Ravensthorpe Snail Orchid (Pterostylis grossa) by its smooth flower scape, more numerous, smaller cauline leaves, broadly flared lateral sepals and north-westerly distribution.

Not Listed