Spider Dew-Grass plant has furry violet blooms, dotted with yellow stamens.
It is a perennial her with fibrous roots. Main stem is undeveloped, short.
Fertile stems arise from below the leaf rosette, diffuse, creeping, 20-80
cm. Leaves are in a basal rosette and cauline. Rosulate leaf blade linear,
8-35 × 0.5-1.5 cm; cauline leaf blade on fertile stems much shorter, to
7 cm, abaxially rather densely arachnoid. Flowers arise in often several,
both terminal and axillary heads, stalkless or on a stalk up to 4 cm. Bracts
are 7-8 mm. Sepals are fused at base, linear-lanceshaped, about 5 mm,
webby on the underside. Petals are blue-purple, blue, or white, about 6 mm.
Filaments are blue, cobweb-like. Capsules are broadly oblong, trigonous,
about 2.5 mm, densely hairy at the tip. Flowering: June-September.
Medicinal uses: Spider Dew-Grass was used to cure the rheumatic
infections in the China Imperial. The roots are used as medicine for
stimulating blood circulation, as a muscle and joint relaxant, and for
relieving rheumatoid arthritis.