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 I'Arapahoe; 

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

 Red Mountain; Ethel Peak. 



7. MIMULUS L. MON KEY-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.Langsdoriii. 



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 Cafion ; 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 Caiion ; New Windsor. 



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

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



