96 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
Veg. 2: 533; Seringe in DC. Prod. 2: 281; Don, Gard. Dict. 2: 557; Dietr. Shyldly Jed h, 
3: 186; Walp. Rep. 2: 32; Ann. 2:7 479; Lehm: Rev. Pot: 57 
Michx. Fl. Bor. Am. 1: 304; Pursh, Fl. Am. Sept. 356; Nutt. Gen. N. Am. Pl. 1: 
310: Eat. Man. Ed. 2 : 380; Ed. 408; Ed. 5: 344; Ed. 6: 281; Ed. 7: 458; Torr. EI 
U.S. 499: er Zit siBeck-: ae 107 Syl, Torr. nano. EL IN. Am: 1438 
fat. and Wr. N. A. Bot. 373; Gray, Pl. Fendl. in Mein Am. Acad. 4: 42; Man. Ed. 5 
Ibo IRE, IR, = Rep. 12: book 2, part 2: 39; Wood, Class Book, 343 ; Watson, King’s 
Rep. 5: 86; Proc. Am. Acad. 8: 553 ;' Rothrock, in Wheeler’s Exp. 4: 112; Coulter, 
Man. Rocky Mts. 84; Wats. & Coult. in Gray, Man. Ed. 6: 159;! Rydb. Fl. Neb. 21: 
16; Bull: Torr: Bot. Club, 23+ 263- Britton & Brown, Ill Pl. 2: 214 
Richardson, in Frankl. 1st Journ. 739; Ed. 2: App. 20; Lehm. in Hook. Fl. Bor. 
Am. 1; a Ledeb. Fl. Ross. 2: 40;? Hook. & Arn. Beechey’s Voy. 123 ; Macoun, Cat. 
Can. Pl. 1386" and 516. 
peer normalis Besser, in Sprengel. Syst. Veg. 4: 199. 1825. 
Potentilla Missowrica Schrad. Ind. Sem. Bot. Goett. 1821-32; Linnaea, 8: Litt. 26; 
Lindl. Bot. Reg. 17: pl. 1412. 
Potentilla Pennsylvania communis Torr. & Gray, Fl. N. Am. 1: 488. 1838. 
Potentilla Pennsylvanica Missourica Lehm. Rey. Pot. 59, 1856; Walp. Ann. 2: 480. 
1852 
InLustRations: Jacq. Hort. Vind. 2: pl. 189; Lindl. Bot. Reg. 17: pl. 1412; Britt. 
& Brown, Ill. Fl. 2: f. 1929. Puare 39, f. 7 (basal leaf). 
Stem generally erect, strict, 4-8 dm. high, more or less woolly tomentose. Stipules 
ovate in outline, 1-2 em. 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 subsessile ; leaflets gradually reduced downward, the 
rachis often somewhat decurrent, in the typical form oblong or oblanceolate in outline, 
divided half-way to the midrib into oblong divisions, the margins scarcely at all revolute. 
Cyme dense, with erect branches. Flowers short-pediceled. Hypanthium densely pubes- 
cent, tomentose and strigose. Bractlets lanceolate, acute, equalling the ovate-triangular 
acute sepals, generally not prominently veiny. Petals obovate, cuneate, slightly emar- 
ginate or truncate, about equalling the sepals. 
There is some doubt as to whether this is the true P. Pennsylvanica L. The de- 
scription of the leaves of that species seems to indicate rather P. litoralis.. The form repre- 
senting P. Missowrica has been cultivated in Europe under the name of P. Pennsylvanica. 
The same form was also figured by Jacquin in Hort. Vind. 2: p/. 789, under that name. 
1TIncludes P. litoralis. 2 Probably var. strigosa. 
