Acianthus R.Br.

Labellum with 2 well developed basal glands Acianthus

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Sepals long-filiform; the dorsal sepal up to 40 mm long. Stems 6–16 cm high. Flowers 1–6, reddish-purple. Chiefly coast. Sandy soils. Fl. July–Sept. Mayfly Orchids Acianthus caudatus

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Sepals not long-filiform, up to 20 mm long. Perianth brown, green or pinkish