84 PROCEEDINGS OP THE AMERICAN ACADEMY 



calyce reflexo glanduloso-hirsutulis ; petalis ovalibus lajte aureis basi 

 ecallosis supra unguem truncatis vel subcordatis ; ovario et capsula 

 late ovatis apice breviter bilobis ; seminibus oblongis striolatis nitidis. 

 — S. Hirculus, Gray in Am. Jour. Sci. xxxiii. 409 (coll. Parry, no. 

 164 & 106), non L. S. serpyllifulia, Gray in Proc. Acad. Philad. 

 1803, 02 (coll. Hall & Harbour, no. 199), non Pursh. High alpine 

 region of the Coloi-ado Rocky Mountains, especially abundant on 

 Torrey's and Gray's Peaks, at 11-14,000 feet, its golden flowers 

 close to the sward, more brilliant than those of the equally abundant 

 Geum Rossii which accompanies it. S. Hirculus occurs at very much 

 less elevation, fully resembling the Arctic American and the European 

 plant. S. serpylUfolia, Pursh, now better known by good Alaskan 

 specimens, collected by Prof. Harrington in 1871-2, is more slender, 

 the flowers solitary and smaller, the calyx not reflexed even in fruit, 

 petals light yellow, cells of the anther parallel, ovary partly immersed 

 in a disk, its base adnate to the base of the calyx, the capsule dis- 

 tinctly 2-horned at the summit, and the tijJ of the horns narrow and 

 styliforra. These distinctions were made out several years ago, and 

 the Rocky Mountain species has been freely distributed among bota- 

 nists under the name of S. chrysantha, but it has accidentally escaped 

 publication. 



