RHIxVANTHACEAE. 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 i-i.S dm. 



high. I. 5". 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. 5". Ritteriajia. 



Flowers reflexed ; calyx-lobes 2 ; corolla greenish-white. 4. 5". reflexa. 



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 Cafion. 



3. Besseya Ritteriana (Eastw.) Rydb. (Synthyris Ritteriana Eastw. ; ^. 

 Havescens 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 reflexa (Eastw.) Rydb. (Synthyris reflexa 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. 



