1905| On SO-CALLED SILENE MENSIESII. | 165 
_ Yale, B. C., as collected by Mr. Macouvn, Geol. Sur. N. 61,314, 
Under ground growth apparently different from that of A. Men- 
giesit, and the leaves short, broad, not long-pointed ; flowers 
few, not cymose but scattered in the axils of leaves. 
A. TERETICAULIS, Greene, |. c. 105. Of this I know but a sin- 
gle specimen, Herb. Geol. Surv. n. 10,123, from Waterton Lake, 
Alberta, 1895, by Mr. John Macoun, but the characters of the 
species are excellent, the stems with no trace of anyularity, and 
openly dichotomous from the middle, the inflorescence therefore 
ample, but leafy. 
A. TENERRIMA, Greene, |. c. 104. This is remarkable for ex- 
tremely thin vivid green foliage, and the whole plant, even to the 
4-angled stems is very slender and delicate, the scattered flowers 
on the most slender of pediceis in the axils of the leaves, Not- 
withstanding its slenderness and delicacy the plant appears to be 
upright. The specimens are from Medicine Hat, Assiniboia, by 
Mr. Macoun, June, 1904, the fine herbarium sheet being number- 
ed 3,090. 
A. DEBILIS, Greene, |. c. 104. A low small depressed and 
much branched herb., nearly as delicate as the last, as different as 
possible as to mode of growth, the angles of the stem almost 
uncinate-prickly in a very delicate fashion, the very lowest 
internodes somewhat villous downwarcs. The species is another 
ot Mr. John Macoun’s gathering in Assiniboia, June, 1895, from 
Farewell Creek in the Cypress Hills, the number, 1o124. 
A. PicTaA, sp. nov. Loosely tufted, ascending 8 to ro inches 
high, the stems terete, dichotomous, leafy and floriferous from 
below the middle but loosely so, the internodes often of more than 
twice the length of the leaves, the lower with a minute and scanty 
retrorse pubescence, the upper and the pedicels with as minute but 
more copious and spreading gland-tipped hairiness : larger leaves 
little exceeding an inch in length, spreading, elliptic-lanceolate, 
very acute, sparingly and retrorsely scabro-pubescent on beth faces: 
reduced leaves of the cyme ovate-elliptic, the pedicels short, the 
lower not exceeding the leaves ; calyx small, oval, the triangular- 
subulate teeth erect or connivent and wholly red-purple: petals 
small, 
Hector, B.C. 4th Aug., 1904, J. Macoun, Geol. Surv., n. 
