(2739.) S. Macounii, Scribner, MS.

S. Richardsonii, Macoun, Cat. IV., 190.

"This is the Stipa Richardsonii of Gray's Manual, but I think not of Link. Your S. Richardsonii, var. major, is, I believe, Stipa Richardsonii, Link. I look upon the eastern plant, with its smaller panicle and spikelets, as a distinct species, and beg leave to name it S. Macounii." (Scribner.) This species includes all the references under S. Richardsonii in Part IV. (Macoun.)

(3202.) S. Richardsonii, Link.

S. Richardsonii, var. major, Macoun, Cat. IV., 191.

Not uncommon along the north shore of Shuswap Lake, near Scotch Creek, B.C., June, 1889. (Macoun.)

(2740.) S. spartea, Trin.; Macoun, Cat. IV., 191.

Abundant in many places on the hills around Kamloops and towards Nicola Lake, June, 1889. (Macoun.)

(2742.) S. Columbiana, Macoun, Cat. IV., 191.

Distinguished from S. viridula by its acute callus and short palea, this being scarcely half as long as its glume. (Scribner.) Not uncommon in tufts on the flats at Kamloops, B.C., June, 1889. (Macoun.)

S. - ------? (No. 18.)

"This = 613, Tweedy, 1885, and referred by me to S. viridula, from which I now think it is distinct. Must study it more. Perhaps it is not separable from S. Columbiana." (Scribner.) My Yale specimens referred in Part IV. to S. Columbiana, belong here, if this proves a distinct form. No. 18, of 1889, was gathered at Yale, B.C. (Macoun.)

(2738.) S. comata, Trin. & Rupr.; Macoun, Oat. IV., 190; No. 20 Macoun, 1889 = 338 Scribner; 201 M. E. Jones (Colorado); 49 Rusby (Arizona); 1625 Henderson (Oregon); and 37 Tweedy (Washington).

"Awn 5 1/2 inches long, flowering glumes with callus 7 inches long." (Scribner.) My No. 20 was growing in abundance in tufts on dry flats at Spence's Bridge, B.C., May, 1889. (Macoun.) "No 19 is the same species but the awns are only about 4 inches long, flowering glume including callus 5 inches long." (Scribner.) No. 19 was abundant in the same situation at Kamloops, B.C., June, 1889. (Macoun.)