MEMOIRS FEOM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 63 



PotentiUa multmcta Rydb. Bull. Torr. Bot. Club, 23 : 397. 1896. 



Illustrations: Plate ^0, f. 6 ; dissection of flower,/. 7; stamen,/. 8; pistil,/ 9; 

 fruiting hj^panthium and calyx,/ 10. 



Stem erect, slender, 1-2 dm. high, more or less silky-strigose. Stipules ovate-lan- 

 ceolate, acute, about 5 mm. long. Basal leaves with petioles 5-10 cm. long, more or less 

 silky, digitate or pinnate with approximate leaflets ; leaflets 3-7, the lower smaller, all 

 dissected into linear or linear- oblong divisions. Stem leaves much reduced and few. 

 Hypanthium silky, in fruit 5-7 mm. in diameter ; bractlets and sepals oblong-lanceolate, 

 acute, nearly equal. Petals obcordate, about one-half longer than the sepals. 



This was also included in P. dissecta by Watson. It is probable that this plant is the 

 original P. dissecta Pursh, the description of which fits it, as well as P. Ranunculus 

 Lange, better than the species for which the name is used, viz. P. diversifolia Lehm. From 

 this, P. multisecta differs not only in the finely dissected leaves, but also in the smaller 

 flowers. " The leaves are not truly digitate, but the outer leaflets are attached a little 

 lower, as in P. decurrens ; all are divided into linear segments. This species therefore 

 connects the Aureae with the Muliijugae, especially with P. pinnatisecta and P. millefolia. 

 It ranges from Nevada to British Columbia and Wyoming. 



Nevada: S. Watson (King's Exp.), No. 330, 1868 (type) ; M. E. Jones, 1891. 

 Wyoming : F. H. Burglehaus, 1893. 



Montana: F. W. Anderson, No. 125, 1885; Rydberg, No. 2691, 1895. 



British Columbia: Macoun, No. 7245, 1890 and 7246 (in part), 1891. 



§ g. GRACILES. 

 39. PotentiUa subcoriacea. 



Stem from a thick perennial root, 3-5 dm. high, strigose and more or less glandular upward. 

 Leaves dark green and shining, nearly glabrous, thick and somewhat coriaceous, digitate, with 5-7 

 broadly obovate cuneate leaflets 3-5 cm. long. Bractlets lanceolate, shorter than the sepals. Petals 

 yellow, broadly obcordate, one-half longer than the sepals. 



This species most resembles P. ranunmloklea Humb. & Bonpl. , from which it differs mainly in the 

 size of the plant, the thicker and larger leaves and the glandular pubescence on the upper part of the 

 stem. 



Mexico: C. G. Pringle, No. 5258, 1892. 



40. PotentiUa etomentosa Rydb. 

 PotentiUa rigida Newberry, Pac. R. R. Rep. 6 : Part 3, 72. 1857. Not Wall. 1828. 



