CATVLOGUE OP CANADIAN PLANTS. 303 



43. ARABIS. 



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



ApetTita, Lam.; ilacoun, Cat., I., 42, in part. 



Greenland and Aictic 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. 50", August lOtli, 1886; Soutli 

 Twin Island, James Bay, July I'lth, 18ST. (./. M. Macoun.) York 

 Factory, Hudson Bay. (B. Bell.) 



(132.) A. lyrata, Linn., var. occidentalis, Watson. 

 A. pelriea, Lam. var. ambigua, Kegel. 



Dr. Watson has made the above change, and this form is now evi- 

 dently 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. 



(30T.3.) A. Lemmoni, Wat, l^roc. Am. Acad., XIV.,4(J7. 



A. canescens and var. latifolia, Wat., Bot. King. Exp., 16, and Bet. Calif., 

 I., .32, IL, 431 ; Macoun, Cat, III., 487. 



" Perennial, low (a span high oi- 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, 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 g ot 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 sum- 

 mit of Canmore Mountain, Rocky Mountains, June 27, 1885. (Macoun.) 



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



A. Isangata, Hooli. Fl. Bor.-Am., I., 43. 



TurHtis glabra and var. ,3, Torr. & Gray, FI. 1., 78, and 666. 



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



T. slricia, Torr. Fl. N.Y., I., 53, not Grali. ; Gray, Gen. 111., L, 144, t. 59. 



A. Drummondii, Gray, Man., ed. V., 69 (1807) ; Macoun, Cat. I., 43, in part. 



