[3] Braya longii is a small scapous (flower-stalk grows directly from the ground) perennial, with basal leaves that are fleshy and greyish-green to bluish in colour.

[3] It is an obligate calciphile, meaning that it requires calcium-rich soil, and grows in limestone substrate disturbed by either natural (frost heave, wind or water erosion) or anthropogenic processes.

The plant has a deep taproot for anchorage and moisture access, and dies back to the crown in winter.

White, four-petaled flowers, each with four oval, green to purple-tinged sepals arranged in a raceme,[2] have claws that are usually tinged with bluish- or reddish-violet.

[3] Its principal threat is habitat loss due to extensive limestone quarrying, road construction and community development.