218 GERANIACEAE. 



Family 72. GERANIACEAE J. St. Hill. GERANIUM FAMILY. 



Leaves in ours digitately divided or lobed ; tails of the ripening carpels dehiscent, 

 merely arched, glabrous on the inner face. i. GERANIUM. 



Leaves pinnately dissected ; tails of the ripening carpels, if dehiscent, twisted 

 below and bearded on the inner face. 2. ERODIUM. 



i. GERANIUM L. CRANEBILL, GERANIUM. 



Petals 1-2 cm. long. 



Plant erect, tall, scarcely cespitose ; divisions of the leaves rhombic in out- 

 line ; the terminal tooth much longer than the rest; petals white (some- 

 times slightly tinged with rose) and purple-veined. 

 Lower part of the stem glabrous or with scattered spreading villous or 



glandular hairs. i. G. Richardsonii. 



Lower part of the stem with short reflexed and appressed hairs. 



Slender; leaves and calyx sparingly pubescent. 2. G. gracilentuni. 



Stout ; calyx and leaves densely pubescent, the latter almost grayish. 

 Veins of the petals weak ; calyx only sparingly glandular. 



3. G. Cowenii. 

 Veins of the petals very strong ; calyx densely glandular. 



4. G. nervosiDii. 

 Plant more or less cespitose ; stems ascending or spreading ; divisions of the 



leaves obovate-cuneate ; the terminal tooth only slightly longer than the 

 rest ; petals purplish. 



Petals broadly obovate to obcordate ; light purple with darker veins. 

 Stem glandular-villous with long spreading hairs. 



Teeth of the leaves ovate to lanceolate, acute. 5. G. Parryi. 



Teeth of the leaves broadly ovate, abruptly short-acuminate. 



6. G. Pattersonii. 

 Lower part of the stem grayish-pubescent with reflexed hairs, not glandular. 



Teeth of the leaves very short and broad ; stem diffuse ; petals obcordate. 



7. G. Fremontii. 

 Teeth of the leaves elongated, lanceolate ; stem more upright ; petals 



obovate. 8. G. caespitosum. 



Petals narrowly obovate, dark purple ; plant not at all glandular. 



9. G. atropHrpnreum. 

 Petals 5-7 mm. long. 10. G. Bicknellii. 



1. Geranium Richardsonii Fish. & Traut. In meadows from Sask. and B. C. 

 to N. M. and Calif. Alt. 8000-10,000 ft. Honnold ; Rabbit-Ear Pass ; Bob 

 Creek, West La Plata Mountains ; Four-Mile Hill, Routt Co. ; camp on 

 Grizzly near foot of Rabbit-Ear Range. 



2. Geranium gracilentum Greene. In mountain valleys from Colo, to N. M. 

 and Ariz. Alt. 6000-10,000 ft. Headwaters of Clear Creek; Pike's Peak; 

 Piedra ; Mancos ; 4 miles west of Cameron Pass ; near Veta Pass ; near La 

 Plata Post Office; La Plata Canon; Columbine, Middle Park; Box Canon, 

 west of Ouray ; Bosworth's ; Beaver Creek ; bank of Elk River, Routt Co. ; 

 Trail Creek bottom ; Rico ; Silverton ; northwest of Dolores. 



3. Geranium Cowenii Rydb. In the mountains of Colo. Alt. 6000-7000 ft. 

 Hills, Larimer Co. ; Horsetooth Gulch ; Rist Canon ; La Veta. 



4. Geranium nervosum Rydb. In the mountains of Wyo. and Ida. to Utah 

 and Colo. Alt. 8000-9000 ft. Pike's Peak; Grizzly Creek; Continental Di- 

 vide, Routt Co. ; Four-Mile Hill, Routt Co. ; Steamboat Springs. 



5. Geranium Parryi (Engelm.) Heller. (G. Fremontii Parryi Engelm.) In 

 the mountains of Wyo. and Colo. Alt. 6000-10,000 ft. Pike's Peak: head- 



