RHINANTHACEAE. 313 



12,000 ft. Summit of North Park Range, Routt Co. ; four miles west of 

 Cameron Pass; Silver Plume; Little Kate Basin, La Plata Mountains; Trap- 

 pers' Lake ; near Pagosa Peak ; Seven Lakes ; Marshall Pass ; Tennessee Pass ; 

 Mirror Lake ; Alpine Tunnel ; Silverton ; Beaver Creek ; Leroux Creek ; 

 Berthoud Pass. 



4. Veronica serpyllifolia L. In fields, thickets and open woods from Lab. 

 and Alaska to Ga., Colo, and Calif.; also in Europe and Asia. Alt. 8000- 

 11,000 ft. Caribou; Marshall Pass; Red Mountain, south of Ouray; Gray- 

 back mining camps and Placer Gulch ; headwaters of Sangre de Cristo Creek ; 

 Bob Creek, West La Plata Mountains; Silverton; Beaver Creek; Hotchkiss; 

 Gore Pass. 



5. Veronica xalapensis H. B. K. (V. peregrina A. Gray, in part; not L.) 

 In sandy soil from Sask. and B. C. to Tex. and Calif. Alt. 5000-8500 ft. 

 Ft. Collins; Table Rock; Manitou; foothills, Larimer Co.; Mancos; Pagosa 

 Springs; Ft. Collins; Idaho Springs; Cerro Summit; Veta Pass; Boulder; 

 Grizzly Creek. 



6. Veronica Buxbaumii Tenare. In waste places from N. S. and N. Y. to 

 Colo.; adventive from Europe and Asia. Boulder. 



ii. BESSEYA Rydb. 

 Corolla present. 



Flowers not reflexed ; calyx-lobes 3-4. 



Upper lip of the purple corolla twice as long as the calyx; plant 1-1.5 dm. 



high. i. S. alpina. 



Upper lip of the corolla only slightly longer than the calyx; plant 1.5-3 



dm. high. 

 Corolla purple or pink, not ciliate ; divisions of the lower lip obtuse. 



2. S. plantaginea. 

 Corolla white or yellowish, ciliate on the margin ; divisions of the upper 



lip acute. 3. S. Ritteriana. 



Flowers reflexed ; calyx-lobes 2 ; corolla greenish-white. 4. S. refiexa. 



Corolla lacking. 5. S. gymnocarpa. 



1. Besseya alpina (A. Gray) Rydb. (Synthyris alpina A. Gray) On the 

 higher mountains of Wyo. and Colo. Alt. 10,000-14,000 ft. Mt. Harvard; 

 West Spanish Peak; Gray's Peak; Massif de 1'Arapahoe; headwaters of 

 Clear Creek; Ethel Peak. 



2. Besseya plantaginea (Benth.) Rydb. (Synthyris plantaginea Benth.) 

 On hillsides and mountains from Wyo. to N. M. and Ariz. Alt. 6000-13,500 

 ft. Mountain near Veta Pass; Pike's Peak; mountains above Ouray; hills 

 southeast of La Veta ; mesas near Colorado Springs ; South Cheyenne Canon ; 

 butte, 5 miles southwest of La Veta ; Wahatoya Canon ; Manitou ; Gray's 

 Peak ; Minnehaha ; Cascade ; Artist's Glen ; Mt. Garfield ; headwaters of Clear 

 Creek; Como; Bear Creek Canon. 



3. Besseya Ritteriana (Eastw.) Rydb. (Synthyris Ritteriana Eastw. ; 6". 

 ilavescens A. Nelson) On the higher mountains of Colo. Alt. 7000-12,000 

 ft. Red Mountain; Bear Creek Divide, West La Plata Mountains; Cimar- 

 ron; Cumberland Basin. 



4. Besseya refiexa (Eastw.) Rydb. (Synthyris reflex a Eastw.) On the 

 mountains of Colo. Kendall Basin, near Silverton. 



5. Besseya gymnocarpa (A. Nels.) Rydb. (Wulfenia gymnocarpa A. 

 Nels. ; Synthyris rubra A. Gray, in part; not Benth.) On hills from S. D. 

 and Alb. to Colo, and Utah. Wood's ranch. 



