It has between three and seven thin, leathery, yellowish green leaves and up to twelve cream-coloured flowers with large purple or reddish blotches.

[1][3][4][5] Sarcochilus weinthalii was first formally described in 1904 by Frederick Manson Bailey and the description was published in the Queensland Agricultural Journal from a specimen collected near Toowoomba by Ferdinand August Weinthal.

[6] The blotched butterfly orchid grows in forest and scrub in hilly between the Bunya Mountains in Queensland and the Richmond River in New South Wales.

[3][4] This orchid is classed as "vulnerable" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and the New South Wales Government Biodiversity Conservation Act 2016.

The main threats to the species are illegal collecting and inappropriate fire regimes.