502 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



2. Amarella strictiflora (Rydb.) Greene, Leaflets 1: 53. 1904. 

 Gentiunu uvula stricta Hook. Fl. Bor. Ainer. 2: 63. 1838. 



Gentiana acuta slriclifiora Rydb. Mem. N. Y. Bot. Gard. 1: 309. 1900. 



Amarella cobrensis Greene, Leaflets 1: 5(5. 1904. 



Type locality: "Canada to the Rocky Mountains and Slave Lake." 



Range: British America to California and New Mexico. 



New Mexico: Jemez Mountains; Santa Pe and Las Vegas mountains; Taos Moun- 

 lains; Carrizo Mountains; Baldy; Santa Rita; Capitan Mountains; White Mountains. 

 Meadows in the mountains, Transition to the Arctic-Alpine Zone. 



The type of Amarella cobrensis was collected at Santa Rita (Greene in 1880). 



3. Amarella scopulorum Greene, Leaflets 1: 55. 1904. 

 Amarella revoluta Greene, loc. cit. 



Type locality: "Rocky Mountain region from Colorado to Montana." 



Range: Montana and South Dakota to Arizona and New Mexico. 



New Mexico: Rio Pueblo; Santa Fe and Las Vegas mountains; West Fork of the 

 Gila; Jemez Mountains; White and Sacramento mountains. Mountain meadows, in 

 the Transition Zone. 



The type of A. revoluta was collected in the White Mountains (Wooton 552). 



8. CHONDROPHYLLA (Bunge) A. Nels. 



Small annual or biennial, less than 10 cm. high, with single or several stout stems; 

 leaves numerous, small, opposite, with white scarious margins; flowers solitary, ter- 

 minal; calyx narrow, 4 or 5-toothed; corolla salverform when expanded, plicate at the 

 sinuses with broad emarginate lobes or plaits, without crown or glands; anthers cor- 

 date, versatile. 



1. Chondrophylla fremontii (Torr.) A. Nels. Bull. Torrey Club 31: 245. 1904. 



Gentiana fremontii Torr. in Frem. Rep. Exped. Rocky Mount. 94. 1845. 



Type locality: "Wind River Mountains." 



Range: Wyoming to northern New Mexico. 



New Mexico: Winsors Ranch; Costilla Valley. Moist meadows, in the Transition 



Zone. 



9. DASYSTEPHANA Adans. Closed gentian. 



Annuals, biennials, or usually perennials, with opposite entire leaves, sometimes 

 scabrous-ciliolate or erose, and usually 5-parted flowers variously arranged; calyx per- 

 sistent, the lobes minute or foliaceous, smooth and glabrous or scabrous-ciliolate; 

 corolla salverform, funnelform, or clavate, without glands at the base of the tube or 

 filaments at the base of the lobes, the lobes erect, converging, plaited in the sinuses; 

 stamens with converging or cohering anthers; capsules stipitate. 



KEY TO THE SPECIES. 



Floral leaves broadened, more or less scarious; flowers deep purple. 2. D. parryi. 

 Floral leaves narrow, green; flowers not deep purple. 



Calyx glabrous; corolla white with purplish dots 1. D. romanzovii. 



Calyx scabrous; corolla not dotted, white or purplish. 



Corolla white, 3 cm. long or more 3. D. rusbyi. 



Corolla purple, 2 cm. long or less. 



Flowers in a short dense cluster; plants less than 15 cm. 



high 4. I). bigelovii. 



Flowers in an elongated raceme; plants more than 20 



cm. high 5. D. interrupta. 



