624 



C.ERANIACEAE 



Geranium 



50 



Map 1286 



Geranium Robertianum L. 



Geranium Bickne 



3924. GERANIUM [Tourn.] L. Cranesbill 



Perennial; involucral leaves mostly 7-15 cm wide 1. G. maculatum. 



Annual or biennial; involucral leaves mostly 3-6.5 cm wide. 

 Outer mature sepals 6-10 mm long, awned. 



Leaves of 3 distinct segments which are pinnately cut or divided; carpels pale 



yellow, wrinkled, glabrous or nearly so 2. G. Robertianum. 



Leaves palmately cut or divided into 5 or more lobes or segments; carpels black, 

 not wrinkled, hirsute. 

 Fruiting pedicels much longer than the calyx; beak of mature style column 2.5-6 

 mm long. 

 Pedicels with minute, appressed, glandless pubescence; bodies of cai'pels gla- 

 brous 3. G. columbinum. 



Pedicels densely glandular-pilose; bodies of carpels pubescent. .4. G. Bicknellii. 

 Fruiting pedicels shorter than to slightly longer than the calyx; beak of mature 

 style column 1-2 mm long. 

 Pubescence of stem, at least the lower internodes, more or less retrorsely 



appressed 5. G. carolinianum. 



Pubescence of stem and petioles spreading 



5a. G. carolinianum var. conf ertiflorum. 



Outer mature sepals 2.5-4 mm long, awnless. 



Stamens 5; carpels finely pubescent, not wrinkled; style column beakless 



6. G. pusillum. 



Stamens 10; carpels glabrate, wrinkled crosswise; style column with a beak 1-2 

 mm long. (See excluded species no. 411, p. 1069.) G. molle. 



1. Geranium maculatum L. Wild Geranium. Map 1285. More or less 

 frequent in moist woods. Locally abundant along railroads. The flowers 

 vary greatly in size and color from white to deep rose pink. 



Maine, Ont. to Man., southw. to Ga., Ala., and Nebr. 



2. Geranium Robertianum L. (Robertiella Robertiana (L.) Hanks.) 

 Herb Robert. Map 1286. I found this species to be abundant in a very 

 low woods of 20 acres in St. Joseph County, associated with white elm and 

 soft maple. It was reported by Collins from Dearborn County but he 

 left no specimen. I doubt the accuracy of the determination. 



Newf. to Man., southw. to N. J. and Mo. ; also in Eurasia and Africa. 



