Much branched from the base, 6—12 inches high. Leaves linear, obtuse, ¼—½ an inch long, with strongly revolute, thick rough margins. Flowers ¼ of an inch long, bright rose-colour, campanulate, with broad, spreading obtuse lobes, very fragrant, on slender, slightly glandular pedicels ½—1 inch long at the ends of the stems; calyx and corolla smooth. Abundant throughout the region at the higher elevations, in the same situations as the two previous species and flowering with them during late June and early July. [Sidenote: =Kalmia microphylla= (Hook.) Heller. _Small-leaved Swamp Laurel._] A smooth shrub, 2—6 inches high with erect or ascending branches, the twigs 2-edged. Leaves opposite, short petioled, less than ½ an inch long, oblong or ovate, obtuse, narrowed at the base, the margins revolute. Flowers on slender pedicels 1—1½ inches long, few in simple umbels terminating the branches; corolla saucer-shaped, bright rosy pink about ½ an inch in diameter. Frequent in mossy alpine bogs and meadows throughout the region at the higher altitudes; flowering during June and early July. [Sidenote: =Azaleastrum albiflorum= (Hook.) Rydb. _White Rhododendron._] A shrub with stems 2—6 feet high, with slender hairy branches more or less glandular when young, nearly smooth with age. Leaves, thin, light green and shining above, paler beneath, oblong, 1—2 inches long, with slightly wavy margins. Flowers white, nearly an inch broad, open, with 5-spreading lobes; on short nodding stems in numerous clusters of 1—3 near the ends of the branches, on wood of the previous year; sepals nearly ½ an inch long and leaf-like, filaments bearded at the base; stigma peltate, 5-lobed. On the wooded hillsides at the higher elevations through the Rockies, but much lower in the Selkirks; flowering in June and July. [Illustration: Ledum grœnlandicum Œder. (⅔ Nat.) Labrador Tea.] [Illustration: Azaleastrum albiflorum (Hook.) Rydb. (½ Nat.) White Rhododendron.] [Sidenote: =Menziesia ferruginea= Smith. _Smooth Menziesia._] A shrub 2—6 feet high, twigs more or less chaffy. Leaves obovate, obtuse and glandular-tipped at the apex, pale, glaucous and smooth or very nearly so beneath, sparingly hairy above, ¾—1½ inches long, the margins ciliolate. Flowers 1—5 on glandular pedicels ½—1 inch long in spreading umbels, becoming erect, corolla ¼ of an inch long, cream and pink or salmon, urn-shaped, with 4 spreading teeth; stamens 8, included, with hairy filaments. Throughout the region in moist woods and slopes; flowering during June. [Sidenote: =Ledum Grœnlandicum Œder.= _Labrador Tea._] A shrub 1—4 feet high, with twigs densely rusty woolly. Leaves oblong, obtuse, 1—2 inches long, ¼—½ an inch wide, green and deeply veined above, densely brown woolly beneath, the margins strongly revolute. Flowers numerous, white, nearly ½ an inch broad in close umbels or corymbs; petals 5, narrow, spreading.