Contractions. - Dros. Dro.
Drosera rotundifolia. Nat. ord.} Droseraceae.
Synonyms.- Rorella rotundifolia, Ros solis, Drosera capillaris.
Fig. - Flora Horn., pl. 30.
Round-leaved Sundew. Red-rot. Moor-grass. For. names: German, Sonnenthau; French, Rosee du Soleil; Italian, Rugiada del sole; Spanish, Rociada.
Habitat. - In bogs and wet heathy ground throughout Central and Northern Europe and Great Britain.
Flowering time. - Summer and early autumn.
Parts employed. - The entire fresh plant.
Characters. - Root-stock short and slender. Leaves on long stalks, nearly orbicular, 3 to 6 lines in diameter, covered on the upper surface with long red viscid hairs, each bearing a small gland at the top. Flower-stems slender, erect, glabrous, upper portion consisting of a simple or once forked unilateral raceme, rolled back when young, but straightening as the flowers expand. Flowers white, expanding in sunshine.
Time for collecting. - At commencement of flowering.
Preparation. - Tincture, corresponding in alcoholic strength with proof spirit.
Reference to Horn. Proving. - R. A. M. L., vi.
Proper forms for dispensing. - φ and lx, Tincture only. 1 and upwards, Tincture, Pilules, or Globules.
Average loss of moisture, 80 per cent.