Description
(Tractema)
As the name suggests it has just one, lance-shaped, leaf, some 2-2.5 cm wide. The plant is 10 cm tall here, although literature suggests up to 15 cm tall. Flowers are (violet)-blue, slightly smaller than in S. bifolia, some 10-15 in each spike.
Originally from Portugal, near Lisbon though it grows across Portugal and is one of the few things to thrive in the deep, dry shade of planted Eucalyptus plantations.
In the UK the leaves are cut by cold in very severe winters when there is no shelter, but planted out, this species is fine here outside.