CATALOGUE. 
93 
SAXIFEAGIE^. 
Saxifraga CJ2SPIT0SA, L. Perennial, caespitose ; leaves glandular- 
pubescent, 3-5 cleft, the upper linear and entire, segments broadly linear, 
obtuse ; flowering stems with a few scattered leaves, glandular, 1-4-flowered ; 
calyx-tube adherent to the ovary ; petals white, obovatc, 3-nerved, twice the 
length of the calyx. — A dwarf alpine plant, stems an inch or two high ; in 
these specimens 1 -flowered, with the petals scarcely exceeding the calyx. 
Arctic America from Greenland to Behring Strait ; Rocky Mountains of 
Colorado (Parry.) Uinta Mountains ; 11,000 feet altitude ; August. (354.) 
Saxifraga rivularis, L. The root usually granulate, but the plant 
otherwise not at all different from the ordinary forms; glabrous or pubescent; 
seeds minutely longitudinally rugose. Arctic America from Greenland to 
Behring Strait; Labrador, White Mountains, and Rocky Mountains of 
Colorado. Uinta Mountains, growing in the shaded clefts of rocks wet from 
melting snows ; 10-12,000 feet altitude ; August. (355.) 
Saxifraga adscendens, L. {S. controversa, Sternb.) Annual, glandular- 
pubescent; stems erect, leafy; leaves cuneate-ovate, 3-5-toothed at the 
apex, the earher spatulate and entire, the radical ones crowded ; branchlets 
3-flowered ; pedicels bibracteate, about equaling the fruit. — Alpine ; stems 
1-3' high, 1-3 from the same root, branching above ; flowers pinkish or 
yellowish-white ; calyx-lobes ovate, obtuse, shorter than the petals. Rocky 
Mountains of British America (Bourgeau) and of Colorado (Hall & Harbour.) 
Clover Mountains, Nevada, and in the Uintas; 10-11,000 feet altitude; 
August, September. (356.) 
Saxifraga NIVALIS, L. Perennial; leaves all radical, obovate or spatu- 
late, attenuate into a petiole, unequally crenate-dentate ; scape capitately or 
subcorymbosely several- or many-flowered, the half-adherent calyx erect, 
shorter than the oblong obtuse subunguiculate white petals ; capsules purple, 
divergent. — From Labrador and Greenland to Behring Strait and Unalaska, 
and southward on the Rocky Mountains to Colorado ; California (Brewer.) 
Found on the Clover Mountains, Nevada, and on the Uintas; 10-11,000 
feet altitude ; August, September. (357.) It sometimes occurs with the 
flowers in an open panicle, not distinguishable from the eastern S. Virgini- 
ensls. East Humboldt Mountains ; 9,000 feet altitude ; August. (358.) 
Saxifraga integrifolia. Hook. Very viscidly pubescent ; leaves very 
