(3072.) A. humifusa, (J. Vahl.) Watson.

Apetraea, Lam.; Macoun, Cat., I., 42, in part.

Greenland and Arctic Islands. The Lake Superior reference in Part I., goes to A. lyrata, and the Rocky Mountains ones to Sisymbrium humile.

Var. pubescens, Watson.

Gravelly shores of Hudson and James bays. West coast of Hudson Bay, near mouth of Severn River, Lat. 56°, August 10th, 1886; South Twin Island, James Bay, July 17th, 1887. (J. M. Macoun.) York Factory, Hudson Bay. (R. Bell.)

(132.) A. lyrata, Linn., var. occidental is, Watson.

A. petraea, Lam. var. ambigua, Regel.

Dr. Watson has made the above change, and this form is now evidently in its proper place. Apparently quite common in the northern part of British Columbia. A specimen received from the British Museum and labelled A. lyrata (no locality) is this variety.

(3073.) A. Lemmoni, Wat, Proc. Am. Acad., XIV., 467.

A. canescens and var. latifolia, Wat., Bot. King. Exp., 16, and Bot. Calif., I., 32, II., 431; Macoun, Cat., III., 487.

"Perennial, low (a span high or less), glaucous, hoary below with fine densely stellate pubescence, the stems several from a branching caudex, slender, glabrous above; lower leaves spatulate-oblanceolate, rarely with one or two teeth, 6 to 9 lines long, the petiole sometimes ciliate, the cauline oblong-lanceolate, auriculate, mostly glabrous or nearly so; flowers small, rose-colored, the sepals pubescent; pods ascending or widely spreading on short pedicels (1 to 3 lines), glabrous, curved, 1 to 2 inches long by 2/3 of a line wide, more or less attenuate to a sessile stigma or short style; seeds in one row, orbicular, narrowly winged." Mountains in the Bow River Pass, Sept. 13, 1879; on the summit of Canmore Mountain, Rocky Mountains, June 27, 1885. (Macoun.)

(3074.) A. conflnis, Wat., Proc. Amer. Acad., XIV., 466.

A. laevigata, Hook. Fl. Bor. - Am., I., 43.

Turritis glabra and var., Torr. & Gray, Fl. I., 78, and 666.

T. brachycarpa, Torr. & Gray, Fl. I., 79.

T. stricta, Torr. Fl. N.Y., I., 53, not Grah.; Gray, Gen. Ill., I., 144, t. 59.

A. Drummondii, Gray, Man., ed. V., 69 (1867); Macoun, Cat. I., 43, in part.

"Biennial, rarely somewhat glaucous; stems erect, one or several, usually simple, 1 to 3 feet high; lower leaves oblanceolate, usually dentate, finely stellate-pubescent or sometimes glabrous, the cauline oblong to linear-lanceolate, auriculate; flowers white or pinkish; pods more or less spreading or sub-erect, a line broad or less, straight or slightly curved, usually more or less attenuate above and beaked; seeds small, narrowly oblong, winged." This includes all A. Drummondii and var. brachycarpa from the Atlantic to the Rocky Mountains.

(138.) A. Drummondii, Gray.

Only the Rocky Mountains and westward are included in the range of this species. Fine specimens were collected at Kamloops, Spence's Bridge and Lytton, B.C., in the summer of 1889. (Macoun.)

(3075.) A. Columbiana.

Resembing A. arcuata in the shape of the pods, but differing very much in general appearance. The pods are longer and are exactly sickle-shaped, and the pedicel is shorter; flowers white, calyx almost smooth, but occasionally with a few branching hairs which are more numerous on the leaves and stem, especially towards the base; leaves at the foot of the stem slightly toothed and tapering into a petiole, those of the stem sessile and often clasping. It may be designated a winter annual as its seeds are ripe early in May. Quite common on the lower slopes of the mountains bordering the Thompson and Fraser rivers from Spence's Bridge to Yale, B.C. First detected May 19, 1875. (Macoun.)

(2101.) A. canescens, Nutt.

On mountain slopes in the dry region of British Columbia, Cherry Bluff, near Kamloops, and throughout the Nicola Valley. (Dawson.) Along the mountain slopes at Yale, Lytton, Spence's Bridge, and Kamloops, B.C. (Macoun.)