1.Plants
large-sized, leaves 3–5 mm long; capsules elongate, gradually
tapered downward, to 3.5 mm long; high mountains of southern
Siberia 1. V. nivalis
A rare species known from
scattered localities in the xeric mountain steppes of the Altai and
East Sayan Mountains. Populations usually contain only one to two
small tufts of plants.
— Plants medium-sized,
leaves 2–3 mm long; capsule globose, abruptly tapered downward, to
2 mm long; Arctic regions 2 . V. hyperborea
A rare species known in Russia
only from the Anabar Plateau and Chukotka. It grows in rocky tundras
and fens.