678 MISC. PUBLICATION 4 2 3, U. St. DEPT. OF AGRICULTURE 



12. Calyx- not spathaceous, the tube not like the corolla in texture, 

 much shorter than the teeth (13). 

 13. Plant open, the branches ascending at a relatively wide angle; 

 calyx 2 to 3 mm. long; corolla ochroleucous, naked internally. 



13. G. MICROCALYX. 



13. Plant strict, the branches erect or nearly so; calyx 5 to 10 mm. 

 long; corolla ochroleucous to violet, fimbriate internally. 



14. G. STRICTIFLORA. 



1. Gentiana fremontii Torr. in Frem., Exped. Rocky Mount. 



Rpt. 94. 1845. 



Chondrophylla fremontii A. Nels., Torrey Bot. Club Bui. 31: 

 245. 1904. 



San Francisco Peaks (Tourney 490, in 1892), probably above 10,000 

 feet, summer. Alberta to New Mexico and northern Arizona. 



2. Gentiana monantha A. Nels., Torrey Bot. Club Bui. 31: 244. 1904. 

 San Francisco Peaks, 11,500 to 12,000 feet (Knowlton 131, Little 



4728), August. Colorado and Idaho to northern Arizona. 



3. Gentiana parryi Engelm., Acad. Sci. St. Louis Trans. 2: 218. 1863. 



Dasy 'Stephana parryi Rydb., Torrey Bot. Club Bui. 33: 149. 

 1906. 



White Mountains (Apache and Greenlee Counties), Kaibab Plateau 

 (Coconino County), 8,500 to 11,300 feet, alpine and subalpine mea- 

 dows, August and September. Wyoming and Utah to New Mexico 

 and eastern Arizona. 



4. Gentiana forwoodii A. Gray, Amer. Acad. Arts and Sci. Proc. 19: 



86. 1883. 



De Motte Park, Kaibab Plateau (Buckskin Mountains), 9,000 feet 

 (Jones 6056a), September. Alberta to Colorado and northern 

 Arizona. 



5. Gentiana affinls Griseb. in Hook., Fl. Bor. Amer. 2: 56. 1838. 

 Apache, Navajo, Coconino,* and northern Greenlee Counties, 7,200 



to 9,500 feet, mountain meadows, August to October. Saskatchewan 

 to British Columbia, south to Colorado and northern Arizona. 

 Flowers dark blue or violet. 



6. Gentiana bigelovii A. Gray, Amer. Acad. Arts and Sci. Proc. 19: 



87. 1883. 



Dasy Stephana bigelovii Rydb., Torrey Bot. Club Bui. 33: 149. 

 1906. 



Mountains of Graham, Cochise, and Pima Counties, August and 

 September. Colorado, New Mexico, and southeastern Arizona. 



The Arizona form, which is very similar to G. interrupta Greene, 

 was referred by Gray to G. bigelovii, but seems at least varietally dis- 

 tinct from typical G. bigelovii of northern New Mexico. 



7. Gentiana barbellata Engelm., Acad. Sci. St. Louis Trans. 2: 216. 



1863. 



Anthopogon barbellatus Rydb., Torrey Bot. Club Bui. 33: 148. 

 1906. 



San Francisco Peaks, 10,500 to 12,000 feet (Knowlton 126, Brady 

 725/2490, Little 4780), August and September. Wyoming to New 

 Mexico and northern Arizona. 



