190 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
fornia and in the mountains to New Mexico and Arizona. It is also a native of Siberia, 
the mountains of England, France and Spain and the island Oeland in the Baltic 
Sea. The typical form grows mostly in rich soil along streams. A form with very large 
flowers, 3 cm. in diameter, is P. fruticosa grandiflora Lehmann, Mag. Ges. Nat. Fr. Berlin, 
7: 284 and Rey. Pot. 16; this has been collected in Colorado by C. F. Baker, in 1896; 
it does not deserve even varietal rank; the same may perhaps be said of the following. 
Dasiphora fruticosa tenuifolia (Willd.). 
Potentilla tenwifolia Willd.; Schlecht. Mag. Ges. Naturf. Fr. Berlin, 7: 284. 1813. 
Potentilla floribunda Pursh, Fl. Am. Sept. 355. 1814. 
Poir. Suppl. 4: 540; Eat. Man. Ed. 2, 380; Ed. 3, 408; Bigel. FJ. Bost. Ed. 2, 
203-9 Pla Bost. 26. Don, Gards Dict 25561. 
Potentilla Laureironis Vratt. Ros. Mon. 4. 
Potentilla fruticosa var. tenuifolia Lehm. Monog. 1820. 
Lehm. Rev. Pot. 17; Walp. Ann. 2: 470. 
Potentilla fruticosa var. tenwiloba Turezon. Bull. Soc. Nat. Moscow, 16: 615. 
Ser. in DC. Prod. 2: 279. 
Dasyphora floribunda Rat. Aut. Bot. 167. 1838. 
InLustrAtions: Amman, Ruth. pl. 18, f. 1. 
Leaflets linear-oblong, with revolute margins, shrub lower and more hairy. 
This is only the high mountain form of D. fruticosa, especially when growing among 
exposed rocks. It has the same distribution as the species and is perhaps more common. 
The extreme is reached by 
Dasiphora fruticosa monticola. 
Potentilla fruticosa var. parvifolia Wats. Proc. Am. Acad. T: 561. 18738. Not P. 
parvifolia Fisch. (1831), which is also a Dasiphora. 
Potentilla fruticosa var. alpina Wats. & Rothr. Cat. Pl. Wheeler Surv. 8: 1874. Not 
P. alpina Dalla. 
Rothr. Wheeler’s Rep. 4: 114. 
ILLUSTRATIONS: PLATE 101, f. 7. 
Leaflets very small, about .5 em. long, linear; flowers small, about 1 cm. in diameter 
on comparatively long pedicels. 
Nevada: Watson (King’s Exp.), No. 342. 
12, DRYMOCALLIS Fourr. 
Potentilla L. Sp. Fl. 495, In part. 1753. 
Argentina Lam. Fl. Frang. 3: 118. In part. 1778. 
