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. 1. Geranium. 
Leaves pinnately dissected; tails of the ripening carpels, if dehiscent, twisted 
below and bearded on the inner face. 2. Erodium. 
1. 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. 1. G. Richardsonii. 
Lower part of the stem with short reflexed and appressed hairs. 
Slender; leaves and calyx sparingly pubescent. 2. G. gracilentum. 
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. nervosum. 
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. atropurpureum. 
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- 
