Domed perenniel herb; leaves in a basal
rosette only, margins with large saw teeth, very shiny on
the upper surface; flower heads to 2 cm diameter, pale
lilac
S. farinosa
Erect herb to
1m tall; stem leaves present, basal leaves up to 12 cm long,
stem leaves much smaller; flower heads up to 1 cm diameter,
white to deep purple