RHINANTHACEAE. 311 



6. CHIONOPHILA Benth. 



i. Chionophila Jamesii Benth. In the higher mountains of Colo, and 

 Southern Wyo. Alt. 11,000-14,000 ft Mt. Hayden; near Pagosa Peak; 

 Pike's Peak; Gray's Peak; mountains above Boreas; Massif de 1'Arapahoe; 

 Douglass Mountain, Georgetown; Beaver Creek; Mt. Bartlett; Mt. Robinson; 

 Red Mountain; Ethel Peak. 



7. MIMULUS L. MONKEY-FLOWER. 



Calyx oblique, decidedly inflated in fruit ; upper tooth much larger than the 



rest ; corolla yellow. 

 Calyx-teeth acute; stem neither rooting at the nodes nor floating. 



Perennials, usually tall and erect, 3-6 dm. high; corolla 2-3 cm. long; 



calyx-teeth not much unequal. 



Leaves glabrous ; stem pubescent only above. i . M . Langsdorfii. 



Leaves and stem pubescent throughout. . 2. M. puberulus. 



Annuals, slender or low; corolla 2 cm. or less long; upper calyx-tooth much 



elongated. 

 Corolla 1.5-2 cm. long, at least twice as long as the calyx. 



3. M. nasutus. 



Corolla 5-8 mm. long, about half longer than the calyx. 4. M. Hallii. 

 Calyx-teeth obtuse ; stem decumbent or floating, rooting at the nodes. 



5. M. Geyeri. 

 Calyx neither oblique nor inflated ; its lobes nearly equal. 



Perennials ; flowers 1-4 cm. long ; sepals linear-lanceolate. 



Tall, with erect stem, 3-10 dm. high; corolla crimson or rose. 



6. M. Lewisii. 

 Low or slender, weak ; corolla yellow. 7. M . moschatus. 



Annuals ; flowers 0.5-1 cm. long ; sepals ovate, triangular or broadly lanceolate. 

 Leaves petioled ; blades cordate to ovate-lanceolate. 8. M. floribundus. 



Leaves sessile, oblong, lanceolate or linear. 9. M. gratioloides. 



1. Mimulus Langsdorfii Sims. (M. luteus A. Gray; not L. ; M. minor A. 

 Nels.) In swamps and along streams, especially in muddy places, from Ass. 

 and Alaska to N. M. and Calif.; also in Mex. Alt. 8000-12,000 ft. Hahn's 

 Peak; Chambers' Lake; Van Boxle's ranch, above Cimarron; Grayback min- 

 ing camps and Placer Gulch; Manitou; headwaters of Sangre de Cristo 

 Creek ; Ouray ; Twin Lakes ; bank of Michigan ; Cameron Pass ; Twin Lakes ; 

 Four-mile Hill; Gypsum Creek Canon; Berthoud Pass; Empire; between 

 Sunshine and Ward ; Gray's Peak ; Veta Pass ; Silver Plume. 



2. Mimulus puberulus Greene. In wet places in the mountains of Colo. 

 Alt. 7500-10,000 ft. Four miles west of Cameron Pass; Villa Grove, Steele 

 Canon; Breckenridge; Dix; Bob Creek, West La Plata Mountains; Red 

 Mountain ; Pagosa Springs ; west of Ouray. 



3. Mimulus nasutus Greene. In wet places in the mountains from Ida. 

 and B. C. to Colo, and Calif. Alt. 9000-10,000 ft. Rico; Ouray; Horsetooth 

 Gulch ; Pennock's. 



4. Mimulus Hallii Greene. In wet places in the mountains of Colo. Alt. 

 up to 8500 ft. Georgetown; Piedra; Horsetooth Gulch; gulch west of Pen- 

 nock's. 



5. Mimulus Geyeri Torr. (M. Jamesii T. & G.) In water from Mich, 

 and N. D. to Ills, and Colo. Alt. 4000-7000 ft. Boulder; Colorado Springs; 

 Cucharas Valley, near La Veta; Montrose; Spring Canon; New Windsor. 



6. Mimulus Lewisii Pursh. Along streams from Minn., Mont, and B. C. 

 to Colo., Ariz, and Calif. North Park. 



