TRILLIUM RIVALE. Stems slender, 2 to 8 inches high: leaves lanceolate, rounded or subcordate at base, acute or acuminate, 1 or 2 inches long, on petioles 1 to 15 lines long: pedicel slender, suberect or at length declinate, a little shorter than the leaves: petals subrhombic, acute or acuminate, 6 to 12 lines long, white or more or less marked with purple stamens exceeding the short stigmas, the filaments adnate to the ovary at base, about equalling the anthers: ovary attenuate above; capsule globose, slightly if at all angled, nearly a half-inch in diameter, beaked by the short style. On stream-banks in the Siskiyou Mountains, California, and Coast Ranges of Southwestern Oregon. Collected in 1880 by W. H. Shockley at Big Flat, thirty miles east of Crescent City, and by Thomas Howell in June, 1884. It is allied to the eastern T. nivale, which it much resembles in habit.

PICEA BREWERIANA. Branches slender, often elongated and pendent, puberulent: leaves 5 to 12 lines long, to nearly one line wide, strictly sessile upon the slender base, obtuse, smooth and rounded or slightly carinate above, stomatose beneath on each side of the slightly prominent midnerve: cones 3 inches long, narrowly cylindrical, attenuate at base; bracts linear-oblong (2 lines long), a fourth of the length of the puberulent scale, which is obovate with the rounded thickish summit entire: seed 1 lines long, the wing 4 lines long by 2 broad. This unusually distinct species has been found (by Thomas Howell, in June, 1884) only at high elevations in the Siskiyou Mountains, California, on the head-waters of the Illinois River, in rather dry rocky ground. It grows to a height of from 100 to 150 feet, and a diameter of 1 to 3 feet. Bark reddish. The specific name is given in compliment to Prof. W. H. Brewer, who in connection with the California State Geological Survey had so much to do with the botany of the State, both in the field and in the after disposal of the collections of the Survey. As he took especial interest in the trees of the coast, and collected a large amount of material for their study, it is fitting thus to connect his name with the forest trees of California.