SAXIFRAGACE^. (SAXIFRAGE FAMILY.) 91 



•«- •»- Calyx adherent to the ovary below : stem leaves alternate. 



■*•*■ Sepals distinct or coherent at base. 



= Petals yellow. 



2. S. HirculuS, L. Leaves lanceolate, nerved, not ciliate: pedicels and 

 upper part of the 1 to 6-flowered stem more or less hairy, not f/landuhtr: se/jufs 

 nsKdlly ciliate, much shorter than the very large petals. — From Ctjlorado t(j 

 tlie Arctic Sea. 



3. S. flagellaris, Willd. Glandular-pubescent, 1 to 5-flo\vered : stolons 

 from the axils of the radical leaves long and fdiform, naked and rooting at the 

 ends : leaves obovate-spatulate, ciliate ; the lower much crowded ; the upper 

 oblong or linear : flowers large : sepals very ylundular. — From tiie high 

 mountains of Colorado to the Arctic regions. 



4. S. aizoides, L. Low, 3 to 5 inches high, in tufts, witli few or several 

 corymbose flowers : leaves linear-lanceolate, entire, fleshy, distantly spinnlosf- 

 ciliate : petals spotted with orange. — " Alpine rivulets on the Rocky Moun- 

 tains" {Drummond), throughout Arctic America, and found in some of the 

 Atlantic States. 



5. S. chrysantha, Gray. Bwavi, cesipitose, shoots creeping .- leaves rosu- 

 late, imbricated, oblong-ovate, thick, very smooth: stem filiform, few-leaved, 

 slightly glandular-pubescent, 1 to 2 inches high, 1 to 3-flowered : calyx segments 

 reflexed. — Proc. Am. Acad. xi. 83. The S. serpyllifolia of Fl. Colorado and 

 Hayd. Rep. 1871. High alpine regions of the Colorado Rocky Mountains. 



= = Petals white or cream-color. 



6. S. CSespitOSa, L. Dwarf (l to 2 inches high), cespitose: leaves glandu- 

 lar-pubescent, 3 to 5-clefi, segments broadly linear and obtuse ; the upper leaves 

 linear and entire : flowering stems with a few scattered leaves, glandular, 1 to 

 4-flowered. — Mountains of Colorado and extending northward to lat. 56° 



7. S, Cernua, L. Glabrate or glandular-pubescent: stems granulate at 

 base, weak, 2 to 5 inches high : lower leaves reniform, broadly toothed or lobed : 

 the upper ones bearing little bulbs in their axils : flowers often solitary, terminal, 

 pendulous: petals retuse. — Mountains of Colorado and northward througli- 

 out the Arctic regions. 



8. S. bronchialis, L. Stems slender, producing sliort branchlets : leaves 

 linear, rather coriaceous, flnely ciliate, mucronate-pointed, crowded below: flowers 

 corymbose on a long, slender, bracted peduncle : petals marked with numerous 

 purplish spots. — From Colorado northward to the N. W. Coast. 



++ -i-r Sepals coherent at least to the middle: petals not yellow. 



9. S. rivularis, L. Small: stems weak, 3 to b- flowered : lower leans 

 iounded,3 to 5-lobed, on slender petioles, the upper lanceolate: petals white, 

 ovate. — Mountains of Colorado and northward ; also in the White Moun- 

 tains. 



10. S. adscendens, L. Glandular-pubescent: stems 1 to 3 inches bigh. 

 erect : leaves cuneate-ovate, 3 to 5-tooflied at the apex, the earlier spatulato and 

 entire, radical ones crowded : branchlets 3-flowered: petals pinkish or yellowish 

 white. — Mountains of Colorado. 



11. S. Jamesii, Torr. Glandular-puberulent : stems 2 to 6 inclics high 

 from a thick caudex, 5 to lO-flowered : radical leaves reniform-cordute, smooth- 

 ish, crenately-toothed or -lohed ; cauline few, the uppermost bract-like, cuneiform • 



