Herbs, shrubs, or trees with alternate leaves and perfect flowers; calyx free or adnate to the ovary, 5—9-lobed; petals equal in number to the calyx lobes, distinct or none; stamens usually numerous and distinct; fruit mostly follicles or achenes.

Smooth, stems cæspitose, very leafy. Leaves trifoliate, persistent, leaflets deeply 2—4-lobed, the lateral ones decumbent, forming a broad petiole. Flowering stems 2—6 inches high with a dense terminal raceme of many white flowers, about ¼ of an inch broad; calyx lobes ovate, acute; petals 5, obovate, exceeding the calyx; stamens numerous, shorter than the petals.

Frequent throughout the Selkirks, on alpine slopes and beside streams at the higher elevations; flowering in June.

Stem 2—4 feet high, reddish. Leaves ovate or elliptical, serrulate at the apex, entire below, narrowed at the base to a very short petiole or the lowest sessile, dark green on both sides, ½—1 inch long. Flowers small, deep rose-colour in dense, round, leafy, bracted corymbs, terminating the numerous branches.

In moist, exposed, rocky places and on slopes at the lower altitudes, frequent in the Selkirks; flowering in June.

Stems erect, mostly simple, 1—2 feet high, from horizontal running rootstocks. Leaves, the lower ones small, obovate; upper, oval to oblong, 1—2 inches long, often obscurely lobed and doubly serrate above the middle, smooth throughout, dark green above, paler beneath. Flowers white or tinged with pink in a large flat branching terminal corymb.

Abundant throughout the region on hillsides and dry banks; flowering during July.

Smooth throughout, stem erect, somewhat branched, 2—4 feet high. Leaves long-petioled, 2—3 pinnate, leaflets 1—3 inches long, ovate or lanceolate, thin, acuminate or acute at the apex, rounded or slightly heart-shaped at the base, doubly serrate or incised. Flowers small, white, in an elongated spike.

Frequent along streams throughout the Selkirks; flowering during June and July.

Stems slender, trailing, 1—3 feet long, unarmed, rooting at the nodes, pubescent. Leaves trifoliate, leaflets obovate, cuneate at the base, ¾—1 inch long incised, lateral leaflets often parted to the base, smooth or sparingly hairy. Flowers usually solitary, on long slender pedicels, white or rosy, ⅛ of an inch or more broad; sepals ovate-lanceolate, entire or incised, exceeding the petals; berry of 1—6 large red, juicy drupelets.

Frequent throughout the region in cold damp woods, forming masses of considerable size; flowering during June.

Stem low, herbaceous, unarmed, finely hairy, 3—10 inches high, sometimes leafless below. Leaves 3-foliate, leaflets sessile or short-stalked, rhombic-ovate or obovate, coarsely and unequally serrate or slightly lobed, ¾—1 inch long. Flowers solitary or occasionally 2, slender peduncled; petals obovate, pink, ½—1 inch long; sepals acute, equalling or shorter than the petals, reflexed; berry light red, fragrant and edible.

In cold mossy thickets and swamps throughout the region, the first flowers appearing in May and early June when the stems are but a few inches high, with the leaves hardly unfolded; in midsummer it frequently flowers again from branched stems 8—10 inches high and appearing like a different plant.

Stems herbaceous, trailing or ascending, unarmed, 6—18 inches or more long, somewhat hairy. Leaves petioled, 3-foliate or rarely 5-foliate leaflets rhombic-ovate, smooth or nearly so, acute, the lateral ones mostly rounded, terminal, wedge-shaped at the base, all sharply serrate. Flowers 1—3 on a slender glandular-hairy peduncle, ½ an inch or less broad; petals 5—7, white, spatulate-oblong, erect, rather longer than the acuminate calyx lobes; fruit red-purple, half an inch long.

In cold moist woods and swampy places throughout the region; flowering in May and June.

Stems shrubby, 3—8 feet high, smooth or more or less glandular-hairy. Leaves round-cordate in outline, palmately 3—5-lobed, the lobes acute or acutish, rarely acuminate, coarsely and unequally serrate. Flowers few, 1—2 inches broad, white, in corymbose, terminal heads, calyx lobes tipped with a long slender appendage.

Borders of woods, and in thickets among rocks, throughout the region, but most abundant in the Selkirks; flowering in June and July.

Stems shrubby, biennial, 18 inches to 4 feet high, usually densely clothed with weak glandular bristles or the older stems with small hooked prickles. Leaves pinnately 3—5-foliate, leaflets ovate or ovate-oblong, acuminate, sharply and irregularly serrate or slightly lobed, rounded at the base, 1—3 inches long. Flowers ½ an inch broad in a loose raceme on slender pedicels, curved in fruit; petals white, ascending, about equalling the spreading acuminate sepals; fruit dark red, sweet and very juicy.

The common red raspberry throughout the region in dry and rocky places; flowering in June.

Shrubby, much branched; stems erect or ascending, very leafy, 6 inches to 3 feet high, the bark shreddy. Leaves pinnate with 5—7 oblong, entire, acute leaflets, with long silky hairs and revolute margins. Flowers bright yellow, ¾—1½ inches broad, usually solitary at the ends of the branches.

A very abundant plant throughout the region, in swampy grounds, gravelly river shores, on dry slopes and alpine meadows, flowering throughout the summer.

Stems densely tufted, decumbent or creeping, 1—4 inches long. Leaves 3-foliate, leaflets wedge-shaped, 3—5-toothed at the apex with scattered hairs on both sides. Flowers ¼ of an inch broad, greenish-yellow; petals very small, not exceeding the calyx.

Frequent throughout the region on rocks, usually in dry, exposed situations at elevations varying from 4000 to 10,000 feet; flowering during June and July.

Plant spreading, 3—6 inches tall, hairy, forming new plants by the running stems after flowering. Leaves tufted from the root, very hairy, palmately 3-foliate; leaflets obtuse, strongly serrate, the teeth gland-tipped; lateral leaflets ovate, oblique on the inside, shorter than the terminal one; terminal leaflet broadly ovate with a wedge-shaped base. Flowers white, ¾ of an inch broad; petals slightly longer than the sepals, borne on a scape about ⅓ longer than the leaves. Fruit ovoid, rather small.

On grassy banks and roadsides throughout the Rockies; flowering in late May and early June.

Smooth, decumbent at the base, 6 inches to 2 feet long. Leaves pinnate, the lower long-petioled with 5—7 oblong or oblanceolate, sharply serrate leaflets, which are lighter-coloured and more or less hairy beneath; upper leaflets similar, 3—5. Flowers few, in an open cyme; calyx lobes purple within, acuminate, nearly ½ an inch long, enlarging in fruit; petals much shorter than the sepals.

A marsh plant frequent throughout the region in very wet situations, at the lower altitudes; flowering in July.

Herbaceous, spreading by runners. Leaves all at the root, interruptedly pinnate with 7—21 leaflets and smaller ones interposed; oblong, sharply serrate, dark green above, soft, white-hairy beneath. Flowers bright yellow, ½—1 inch broad, solitary on long pedicels, petals exceeding the ovate, acute, calyx lobes.

In open and waste ground and meadows throughout the Rockies at the lower altitudes; flowering during June and July.

Stem 4—8 inches high, woody at the base, with long silky hairs. Leaves 3-foliate, the lower petioled; leaflets oblong or obovate, usually deeply cut, densely, white-hairy beneath, green and loosely soft-hairy above, ¾—1 inch long. Flowers 1—5, bright yellow, ½—¾ of an inch broad; sepals silky, lanceolate, shorter than the broadly ovate, notched petals.

Frequent throughout the Rockies in open, rocky situations; flowering during June and July.

Stem decumbent or ascending 4—8 inches high from a woody base, more or less silky-villous or nearly smooth. Leaves pinnate or tripinnate with 5—7 lanceolate, deeply cut leaflets, usually glaucous and with ciliate edges. Flowers few, bright yellow, ½ an inch or more broad with notched petals, in an open cyme.

In open alpine meadows and slopes throughout the region at the higher altitudes; flowering during June and July.

Much like the preceding species but much more hairy throughout and with more divided leaves. Flowers in a loose cyme on scapes 4—6 inches high, not quite so large as in the preceding nor as brilliantly coloured.

Dry rocky summits and ledges throughout the Rockies; flowering in June.

Densely cæspitose from a woody base. Leaves closely tufted, small, palmately divided, leaflets deeply cut, densely white-woolly on both surfaces. Flowers solitary on short peduncles, bright yellow, half an inch or more broad; petals broadly obovate, notched at the apex, much longer than the densely soft-hairy lanceolate sepals.

A high alpine species in dry stony ground throughout the Rockies, not common; flowering in July.

Stout, erect, stiff-hairy, 1—3 feet high. Leaves lyrate-pinnate with broad foliaceous stipules, basal leaves petioled, the terminal segment much the largest, reniform, dentate, 3—7-lobed; lateral leaflets 3—6 oval or obovate with smaller ones interspersed. Flowers several, short peduncled, borne in a terminal head; bright yellow, nearly ½ an inch broad; petals longer than the acuminate sepals; receptacle nearly smooth.

In damp places and low grounds throughout the region, most abundant in the Selkirks; flowering in June.

Hairy, branched above, 2—4 feet high. Stipules broad, foliaceous; basal leaves lyrate-pinnate; leaflets 5—7, obovate, cuneate, dentate or lobed, the terminal one largest, broadly ovate or cuneate, stem leaves sessile or short-petioled with 3—5 ovate or oblong, acute segments. Flowers yellow, ½ an inch broad; receptacle downy.

In swamps or low grounds throughout the region; flowering in June.

Soft-hairy, scapose; scape 4—18 inches high, simple, 3—8-flowered at the summit. Basal leaves petioled, interruptedly pinnate with many small leaflets, among the numerous obovate, deeply cut larger ones. Flowers ½ an inch broad of 5 pale purplish-pink petals hardly exceeding the calyx and spreading linear red bractlets; styles plumose in fruit, 1—2 inches long.

In dry open grounds extending into the Rockies from the plains, where it is especially abundant, to the lower slopes and valleys throughout the region; flowering in June.

Stems prostrate, branched, 3—6 inches long. Leaves oblong or ovate, ½—1 inch long, obtuse at each end, closely crenate, dark green and shining above, densely white-woolly beneath. Flowers solitary on slender pedicels, white, an inch or more broad; petals longer than the 6—8 spreading linear sepals; stamens numerous, anthers bright yellow; styles conspicuously plumose in fruit.

Frequent in dry stony ground throughout the Rockies at elevations ranging from 4000 to 10,000 feet, forming dense mats of considerable size on the surface of the ground; flowering in June.

Similar in manner of growth and general appearance to the preceding species. Leaves generally narrower at the base, the lobes dentate-crenate. Flowers ½ an inch long, campanulate, drooping on a densely woolly pedicel; sepals ovate, acute, black glandular-hairy; petals lanceolate, obtuse, bright yellow, about twice the length of the sepals; stamens included; styles numerous, conspicuously plumose in fruit.

In gravel and loose stony soil throughout the Rockies, especially abundant on river shores and flood-plains, like the previous species frequently forming mats of considerable size; flowering in June.

Stems branched, 2—3 feet high, prickly. Leaves pinnate, leaflets large, ¾—1½ inches long, oval, coarsely toothed. Flowers solitary, on slender pedicels, bright pink, petals broadly obovate, an inch or more long, sepals entire with a long acuminate obtuse tip, persistent and erect in fruit, fruit globose, bright scarlet.

The wild rose of the region, in open ground, on slopes, borders of woods, stream and river banks throughout the Rockies; flowering in late June and early July.