CATALOGUE. 93 



SAXIFRAGES. 



Saxifeaga CiESPiTOSA, L. Perennial, ' csespitose ; 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, obovate, 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.) 



Saxifeaga eivulaeis, 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.) 



Saxifeaga adscendens, L. {8. controversa, Sternb.) Annual, glandular- 

 pubescent; stems erect, leafy; leaves cuneate-ovate, 3-5-toothed at the 

 apex, the earlier 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.) 



Saxifeaga 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- 

 ensis. East Humboldt Mountains ; 9,000 feet altitude ; August. (358.) 



Saxifeaga integeifolia, Hook. Very viscidly pubescent ; leaves very 



