Satyrium stenopetalum subsp. brevicalcaratum (Bolus) A.V.Hall, Contr. Bolus Herb. 10: 61 (1982).
Homotypic Synonyms:

Satyrium stenopetalum var. brevicalcaratum Bolus, Icon. Orchid. Austro-Afric. 1: t. 72 (1896).
Heterotypic Synonyms:
Satyrium parviflorum Lindl., Gen. Sp. Orchid. Pl.: 336 (1838), nom. illeg.
Satyrium marginatum Bolus, J. Linn. Soc., Bot. 20: 476 (1884).
Differs from ssp. stenopetalum in having the spurs shorter to about as long as the ovary, 9-14 mm long, and the flowers somewhat smaller with the lateral sepals 5-10 mm long.
Colour of the side sepals light pink, sometimes nearly white, rest of the flower white with faint green lines.
Flowering of Satyrium stenopetalum ssp. brevicalcaratum takes place in the early summer months from September to December. It is usually found as a rather rare plant on moist flats and rock flushes at low to medium altitudes up to 900 m.
Its distribution lies in scattered places in the South-Western Cape, from Clanwilliam southwards to near Cape Town and east to near Caledon and Bredasdorp.

Click on each image to see a larger version.

Botanical Drawing / Herbarium
satyrium stenopetalum subsp. brevicalcaratum
Photograph copyright Swiss Orchid Foundation at the Herbarium Jany Renz Image used with kind permission.