Family, Primrose. Color, called scarlet; rarely white. Calyx and corolla, regularly 5-parted. Stamens, 5, their filaments purple-bearded. Pistil, 1. Flowers, small, wheel-shaped, on long peduncles, single, in the upper axils. Stems, low, spreading. Annuals. Leaves, opposite or whorled, sessile, ovate, entire. May to August.
The petals close upon the approach of a shower, from which-one of its popular names, poor man's weatherglass, is derived. They also close at night, and soon after being plucked. I know of no other flower tinged with just this shade of red. It is often called scarlet pimpernel, but to me it is terra-cotta. It is a dear little plant, often dotting the ground with color. I have picked it in sprays 20 inches long. A variety, caerulca, has blue petals. Open woods or low cultivated grounds. (See illustration, p. 281.)
Pimpernel (Anagallis arvensis)