ONAGRACE1E (ante), a natural order of exogenous herbs constituting the evening primrose family, principally found in America, but also inhabiting temperate latitudes , in the eastern continent. There are several genera. the principal of \which are dram epilobium ecnothera, and Ludwigia. Cirefea, or enchanter's nightshade, named from Circe the enchantress, is a low perennial, growing in cool or damp woods; calyx tube slightly prolonged, deciduous; lobes 2, reflexed; petals 2, inversely heart-shaped; stamens 2• pod does not split open. Two species from Europe, C. lutetiana, and C. alpina. Epilo: Num or willow herb, has several species in this country, most of them brought from Europe. The great willow herb, E'. nugustifotium, has a simple, tall stem from 4 to 7 ft. high, with lanceolate leaves, and grows on low grounds, in newly cleared lands; flow ers pink-purple, very showy. E. is found on the summits of the White moun tains, and also the Adiromlacks. It is only from 2 to 6 in. high, nearly smooth; stem simple; leaves ovate-oblong, obtuse, on short leaf stalks; flowers few or solitary, droop ing in the bud; petals purple; pods long, smooth. E. molle (Torrey), native in bogs from Rhode Island to Pennsylvania and Michigan northward. It grows from one to one foot and a half high; soft-downy all over; erect, branching toward the top; leaves crowded; linear-oblong or lanceolate; petals rose color, small. cEnothera, or the even
ing primrose, is the principal genus. CE. biennis, .or the common evening primrose, has ovate-lanceolate leaves, acute, obscurely notched; flowers in a terminal spike; calyx much prolonged;,_' petals inversely cordate,light yellow color; pods-oblong; several vari eties, as 9nurieata, grandifora, parrifl•ct, aructata, and oakesiana. The other species of cenothera are yhembipetek (having rhombic petals), eimuata, glauca, fructiosa (sundrops), riparia, linearis, chrysantha, serrulata, and pumila. This latter grows southward along the Alleghanies, flowering in June. The Oil. serrulata is found at the falls of St. Anthony, and in Wisconsin and westward. In the genus Ludadgia, or false loosestripe, the calyx tube is not at all prolonged beyond the ovary; petals 4, small or wanting; stamens 4; pod short, many seeded; seeds minute and naked. Named in honor of Christian G. Ludwig. -professor of botany at Leipsic, contemporary with Linnaeus. The seed-box and water purslane are species belonging to this genus, the former growing in swamps along the coast, the latter in swamps or ditches, and very common.