S. vimineum vimineumS. vimineum Sm.

Calyx and bracteoles punctate. Corolla wings larger than and enclosing keel. Style evenly curled, with a membranous flap inside the curve towards the top which is ± as broad as long and scarcely a ¼ the length of the style. Widespread. Wet heath on sandy or peat soils. Fl. spring