96 MEMOIRS FEOM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 



A'eg. 2 : 53:^ ; Scringe in DC. Prod. 2 : 281 ; Don, Gard. Diet. 2 : 557 ; Dietr. Syn. PL 

 3 : I.SG ; Walp. Rep. 2 : o2 ; Ann. 2 : 47'.) ; Lehm. Rev. Pot. 57. 



Michx. Fl. Bor. Am. 1 : 304 ; Parsh, Fl. Am. Sept. :io(> ; Xutt. Gen. N. Am. PL 1 : 

 :nO : Eat. Man. Ed. 2 : 380 ; Ed. 3 : 40S ; Ed. 5 : 344 ; Ed. G : 281 ; Ed. 7 : 458 ; Torr. FL 

 U. S. 409; Comp. 211; Beck, Bot. 107; Ed. 2: 1)9; Torr. and Gray, FL N. Am. 1 : 438; 

 Eat. and AVr. N. A. Bot. 373 ; Gray, PL Fendl. in Mem. Am. Acad. 4: 42; Man. Ed. 5: 

 154 ;i Pac. R. R. Rep. 12: book 2, part 2 : 39; Wood, Class Book, 313 ; Watson, King's 

 Rep! 5: 8G; Proc. Am. Acad. 8: 553 ;i Rothrock, in Wheeler's Exp. 4: 112; Coulter, 

 Man. Rocky Mts. 84; Wats, ct Coult. in Gray, Man. Ed. G: 159 ;i Rydb. FL Neb. 21: 

 IG ; Bull. Torr. Bot. Club, 23 ; 2G3; Britton A Brown, 111. Fl. 2 : 214. 



' Richardson, in Frankl. l.t Journ. 739; Ed. 2 : App. 20; Lehm. in Hook. Fl. Bor. 

 Am. 1 : 187 ; Ledcb. Fl. Ross. 2 : Ai)f Hook, et Arn. Beechey's A^jy- 1^3 ; MacouB, Cat. 

 Can. PL 13G1 and 516. 



r»U:idUla noniudk Besser, in Sprengel. Syst. Veg. 4 : 199. 1825. 



Fotcntillx Mimmrk-a Schrad. Ind. Sem. Bot. Goett. 1821-32; Linnaea, 8: Litt. 26; 

 Lmdl. Bot. Reg. 17 : ///. Ul^\ 



FotentiUa Pcna-^ijJruivia comviunis Torr. ct Gray, Fl. N. Am. 1: 438. 1838. 



FotentlUa Pcnnsylrnnicx MIssourica Lehm. Rev. Pot. 59, 185G ; Walp. Ann. 2: 480. 



1852. 



iLLUSTEATioxs : Jacq. Hort. Vind. 2: pi. 1S9 ; Lindl. Bot. Reg. 17 : pi. 141-'; Britt. 

 & Brown, 111. FL 2 : /. 1920. Plate 39, /. / (basal leaf). 



Stem generally erect, strict, 4-8 dm. high, more or less woolly tomentose. Stipules 

 (jvate in outline, 1-2 cm. long, often pectinately divided. Leaves pinnate, with 3-7 pairs of 

 leaflets, grayish-tomentose and veiny beneath, in the typical form nearly glabrous above, 

 the lower long-petioled, the upper subsessilc ; leaflets gradually reduced downward, the 

 rachis often somewhat decurrent, in the tj'pical form oblong or oblanceolate in outline, 

 divided half-wa}'' to the midrib into oblong divisions, the margins scarcely at all revolute. 

 Cyme dense, with erect I) ranches. Flowers shoft-pediceled. Hypanthium densely pubes- 

 cent, tomentose and strigose. Bractlets lanceolate, acute, ec[ualling the ovate-triangular 

 acute sepals, generally not prominently ^•einy. Petals obovate, cuneate, slightly emar- 

 ginate or truncate, about equalling the sepals. 



There is some doubt as to whether this is the true P. Penasylixuika L. The de- 

 scription of the leaves of that species seems to indicate rather P. lit oralis. The form repre- 

 senting P. ^^moul■ira has been cultivated in Europe under the name of P. Pennsjjlvanica. 

 The same form was also figured Ijy Jaccj[uin in Hort. Mnd. 2 : pi. 189, under that name. 



'Includes P. Utordlis. ^ Probably var. strigosa. 



