Characters. - A very slender, erect, or slightly decumbent glabrous annual, from 3 to 8 inches high, with small, opposite, obovate or oblong leaves, and very small flowers, of a pure white, on long, slender pedicels; sepals 5, all pointed; petals 5, obovate, scarcely 2 lines long; stamens 5.
A proving of this will be found in Brit. Journ. of Horn., xvi.
Part employed. - The entire fresh plant.
Preparation. - Tincture (20 O.P. spirit).
Average loss of moisture, 25 per cent.