A shrub or small tree 6—30 feet high, 2—8 inches in diameter, smooth throughout except the scales which are densely soft, hairy inside. Leaves round-cordate with shallow sinus, 2—4 inches broad and nearly as long, more or less deeply 3-lobed or parted, the ovate-acuminate lobes doubly serrate with slender teeth; conspicuously veined. Flowers greenish-yellow, somewhat corymbose on short 2-leaved branchlets appearing after the leaves. Fruit smooth with slightly spreading wings about an inch long. One of the few deciduous trees of the region, growing on slopes with the other forest trees and in the moist valleys. HYPERICACEÆ _St. John’s-Wort Family_ Herbs in our species with opposite, black-dotted leaves, and cymose yellow flowers; sepals and petals 5, twisted in the bud; stamens many. [Sidenote: =Hypericum Scouleri= Hook. _Scouler’s St. John’s-wort._] Simple or sparingly branched above often with numerous small branchlets from running rootstocks, 1—2 feet high. Leaves thin, shorter than the internodes, about an inch long, mostly obtuse, more or less clasping and usually black-dotted along the margin. Flowers bright orange, ½—1 inch in diameter in more or less panicled cymes, sepals oval or oblong, much shorter than the petals, stamens numerous in three fascicles. In moist gravelly soil in the Selkirks at Glacier; flowering in July. VIOLACEÆ _Violet Family_ Herbs in our species with basal or alternate simple leaves and solitary or clustered perfect irregular flowers; sepals 5, petals 5, the lower one larger or with a posterior spur. [Sidenote: =Viola cognata= Greene. _Early Blue Violet._] Acaulescent; rootstock short and thick. Leaves long-petioled, smooth or more or less hairy, slightly fleshy, cordate with a broad sinus, acute or acuminate, crenately toothed. Flowers large, blue or violet, scapes 2—10 inches long, equalling or surpassing the leaves; petals narrow, ½—¾ of an inch long, all villous at the base, the 3 lower strongly so. In moist shaded ground, on stream banks and in marshes, frequent throughout the Rockies; flowering in May and early June. [Sidenote: =Viola palustris= L. _Marsh Violet._] Acaulescent, smooth, petioles and scapes arising from a very slender, creeping or horizontal rootstock, the scapes mostly exceeding the leaves. Leaves thin, cordate, broadly ovate, orbicular or reniform, 1—2½ inches wide, crenulate. Flowers pale lilac or nearly white with darker veins; petals broad, ⅓—½ an inch long, spur short. In marshy places among moss in the Selkirks near Glacier; flowering in June; not a common species in the region. [Sidenote: =Viola sempervirens= Greene. _Low Yellow Violet._]