academy of sc.ences.j ENUMERATION OF SPECIES. 9 



Cerastium alpinura L. Rare on dry, stony slopes: James Peak, 13,000 feet; Grays Peak; bowlder field on Longs Peak, 

 12,500 feet. 



C. arvense L. var. occidentale (Grne.). Abundant in thickets of Salix glaxtcops: from Stevens's mine to Grays Peak, 



11,500 to 12,000 feet. 

 Stellaria umbellata Turcz. (pi. 1, figs. 5-7). Infrequent: Bowlder field on Pikes Peak, 14,000 feet; Grays Peak; 



Longs Peak, 12,500 feet. 

 S. longipes Goldie. Infrequent: Along brooks, Grays Peak, 12,000 feet. 

 S. longipes Goldie var. laeta Wats. Not uncommon among dry rocks: Grays Peak, 12,500 feet; Mount Elbert, 12,000 



feet. 

 Arenaria Fendleri Gr. Very seldom Alpine: James Peak, 13,000 feet; bowlder field on Longs Peak, 12,500 feet. 

 A. congesta Nutt. Very rare in the Alpine region: On dry slopes of Mount Massive, 12,000 feet. 

 Alsine propinqua (Richards). Rare on exposed rocks: Grays Peak, 12,500 feet. 

 A. verna Bartl. With the preceding. 

 A. biflora (L.) Wahl. Frequent on dry rocks: James Peak, 13,000 feet; Grays Peak; Longs Peak; Mount Massive; 



Mount Elbert, 12,000 feet. 

 Sagina Linnaei Presl. Rare in wet soil in thickets of Salix glaucops: Mount Kelso, 11,500 feet. 



RANUNCULACEAE. 



Anemone narcissiflora L. In crevices of rocks near snow banks: Mount Massive, 12,000 feet; swamp in Thompsons 



Canyon on Longs Peak, 10,500 feet. 

 Thalictrum alpinum L. Very rare: In damp ground on Grays Peak, 13,000 feet. 

 Ranunculus adoneus Gr. Abundant near snow banks: Headwaters of Clear Creek, 11,500 feet. 

 Caltha leptosepala D C. Abundant near snow banks on Mount Elbert, 11,500 feet; Mount Kelso and Grays Peak, 



11,500 feet. 

 Trollius laxus Salisb. With the preceding. 



PAPAVERACEAE. 

 Papaver nudicaule L. Grays Peak, 13,000 feet. 



CRUCIFERAE. 



Draba crassifolia Grah. Very rare: James Peak, 13,000 feet. 



D. streptocarpa Gr. Seldom Alpine: Thompsons Canyon on Longs Peak, 10,500 leet; James Peak, 13,000 feet. 

 Thlaspi Coloradense Rydb. Abundant in bowlder fields on Pikes Peak, 14,147 feet. 



Th. glaucum A. Nels. Rare: In dry soil, Mount Elbert, 11,500 feet. 



Smelowskia calycina C. A. Mey. Very rare: Dry rocks, Mount Elbert, 12,000 feet. 



Erysimum nivale Grne. Very rare: James Peak, 13,000 feet. 



Cardamine cordifolia Gr. Rare above timber line; in thickets of Salix glaucops: along brooks, Grays Peak, 12,000 feet. 



CRASSULACEAE. 



Rhodiola rosea L. Very rare: Bowlder field on Longs Peak, 12,500 feet. 



SAXIFRAGACEAE. 



Saxifraga flagellaris Willd. Infrequent: Bowlder field on Longs Peak; Grays Peak, 12,500 feet; on dry rocks, Mount 



Massive; Mount Elbert, 12,000 feet; in damp, mossy ground with Carex misandra on Grays Peak, 12,000 feet; 



Pikes Peak, 14,000 feet; James Peak, 13,000 feet. 

 S. chrysantha (pi. 2, fig. 17). Infrequent: On moist slopes, Pikes Peak, 13,700 feet; Grays Peak, 12,000 feet; Longs 



Peak, 12,000 feet. 

 S. cernua L. (pi. 2, figs. 13-16). Rare: On grassy slopes of Pikes Peak, 13,700 feet; James Peak, 13,000 feet. 

 S. nivalis L. Not uncommon on grassy slopes, Pikes Peak, 13,700 feet; James Peak, 13,000 feet; bowlder field, 



Longs Peak, 12,500 feet; Mount Massive; Mount Elbert, 12,000 feet. 

 S. bronchialis L. (pi. 2, figs. 11-12). Rare; on dry rocks, Grays Peak, 12,000 feet. 

 S. punctata L. Very seldom Alpine: In sheltered, damp places under rocks in Thompsons Canyon on Longs Peak, 



10,500 feet. 

 Heuchera bracteata Ser. Rare: Among rocks on James Peak, 13,000 feet; Mount Kelso, 11,500 feet. 



ROSACEAE. 



Sieversia Rossii R. Br. (pi. 2, fig. 10). Abundant: Grays Peak; James Peak, 13,000 feet; bowlder fields on Longs 

 Peak; Mount Massive; Mount Kelso; Mount Elbert, 12,000 feet; at Bear Lake in Thompsons Canyon on Longs 

 Peak, 10,700 feet. 



Dryas octopetala L. Abundant on dry rocks, bowlder fields, etc.: James Peak, 13,000 feet; Mount Elbert; Mount 

 Massive, 12,000 feet. 



Fragaria vesca L. A few sterile specimens were found on a grassy slope of Mount Massive, 11,500 feet. 



Potentilla glaucophylla Lehm. On grassy slopes: James Peak, 13,000 feet; Mount Massive; Grays Peak, 12,000 feet. 



