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GENTIANACEAE. 
2. Amarella heterosepala (Engelm.) Greene. ( Gentiana heterosepala 
Engelm.) In damp ground in Utah and Colo.—Alt. about 9000 ft.—Near 
Pagosa Peak; divide road to Steamboat Springs; western Gunnison Co. 
3. Amarella strictiflora (Rydb.) Greene. ( Gentiana amarella strict a S. 
Wats.; G. strictiflora Rydb.) On hillsides and damp places from Sask. and 
Alaska to Colo, and Calif.—Alt. 7500-12,000 ft.—Empire; mountains between 
Sunshine and Ward; Gunnison; Lake John; North Park; Mt. Harvard; 
Ribbon Lake; Estes Park, Larimer Co.; Seven Lakes; Chambers’ Lake; 
Bottomless Pit, Pike’s Peak; headwaters of Clear Creek near Empire; Bergen 
Park; South Park, southeast of Jefferson; Baxter’s ranch. 
4. Amarella scopulorum Greene. ( Gentianella Clementis Rydb.) In damp 
places from Mont, and S. D. to Colo, and Ariz.—Alt. 9000-12,000 ft.— 
Clear Lake; Idaho Springs; Palsgrove Canon; Ruxton Dell; Minnehaha; 
Middle Park; below Half-way House, Pike’s Peak; Graymont; Hamor’s 
Lake above Durango; Artist’s Glen near Pike’s Peak; Pike’s Peak; Silver 
Plume; headwaters of Clear Creek; Bosworth’s ranch. 
5. Amarella plebeja (Cham.) Greene. ( Gentiana plebeja Cham.; G. 
Amarella acuta A. Gray; not Hook.) In wet places from Mackenzie and 
Alaska to Colo, and Calif. (?).—Alt. 8000-10,000 ft.—Georgetown; Middle 
Park, near Cozzens; Marshall Pass; Grand Lake; Deep Creek Lake; north 
of Steamboat Springs; vicinity of Pine Grove. 
Amarella plebeja Holmii (Wettst.) Rydb. ( Gentiana plebeja Holmii 
Wettst.; G. Amarella nana Engelm.) A low alpine variety.—Alt. 10,000- 
12,000 ft.—Caribou; Buffalo Pass; Breckenridge. 
5. CHONDROPHYLLA (Bunge) A. Nels. 
Leaves and calyx-lobes with broad scarious margins; the capsule long-stipitate 
and at last exserted from the corolla. 1. C. Fremontii. 
Leaves and calyx-lobes slightly scarious-margined; capsule short-stipitate, not 
exserted. 2. C. americana. 
1. Chondrophylla Fremontii (Torr.) A. Nels. ( Gentiana humilis Engelm.; 
not Stev.; G. Fremontii Torr.) On alpine wet brook-banks in Wyo. and 
Colo.—Alt. 7000-10,000 ft.—Gunnison; headwaters of Sangre de Cristo Creek; 
headwaters of Clear Creek; Georgetown; Como. 
2. Chondrophylla americana (Engelm.) A. Nels. ( Gentiana prostrata 
Hook.; not Henke.; var. Americana Engelm.) In wet places along streams 
from Alb. and Alaska to Colo.—Alt. 10,000-12,000 ft.—Wilson, San Miguel 
Co.; “Colorado”; northeast of Boreas. 
6. DASYSTEPHANA Adans. Closed Gentian. 
Testa of the seeds lamellose-rugose; the lamellae white, forming hexagonal 
areolas; basal leaf-rosette remaining at flowering time. 1. D. Romanzovii. 
Testa of the seeds smooth, but often produced into wings; basal rosette none. 
Floral leaves more or less broadened and more or less scarious; seeds usually 
wingless. 2. D. Parryi. 
Floral leaves narrow, not scarious; seeds winged. 
Leaves all except the floral ones ovate, oblong or lanceolate. 
Calyx-lobes well developed; calyx-tube truncate at the apex. 
3. D. affinis. 
Calyx-lobes none or minute; calyx-tube irregular, more or less lobed or 
cleft. 4. D. Forwoodii. 
