MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 35 
below ; bractlets lanceolate, nearly equalling the ovate-acuminate sepals. Petals obcordate, dark red, 
longer than the sepals. 
In the mountains of Central and Southern Mexico. 
Mexico: G. Schiede (Vallis Tolucensis); C. G. Pringle, No. 3615, 1890; * Ehrenberg. 
6. Potentilla Ehrenbergiana Schlecht. 
Potentilla Ehrenbergiana Schlecht. Linnaea, 13: 261; Lehm. Rey. Pot. 74; Hemsley, Biol. 
Cent. Am. 1: 376: Dietr. Syn. Pl. 3: 189; Walp. Rep. 2: 31; Ann. 2: 483. 
ItuustratTion: Lehm. Rev. Pot. pl. 32. 
Stem from a thick ligneous root, ascending, canescent ; basal leaves petioled, pinnate with 2 or 3 
approximate pairs of leaflets, green and appressed-pilose above, dirty white-tomentose beneath ; leaf- 
lets oblong, coarsely incised ; stem leaves few, the upper ternate or simple ; bractlets and sepals lan- 
colate, the former a little smaller. Petals obcordate, slightly longer than the sepals. 
Central Mexico: * Ehrenberg. 
§2. TORMENTILLAE. 
7. Potentilla Canadensis L. 
Potentilla Canandensis L. Sp. Pl. 498. 1753. 
L. Sp. Pl., Ed. 2: 713: Poir. in Lam. Nnc. Meth. 5: 595; Willd. Sp. Ble 
1106; Persoon, Syn. Pl. 2: 55; Nestler, Mon. Pot. 27 & 58; Lehm. Mon. Pot. 25 & 
118; Spengel, Syst. Veg. 2: 538; Seringe, in DC. Prod. 2: 575; Don, Gard. Dict. 2: 
552; Dietr. Syn. Pl. 3: 180; Walp. Rep. 2: 34; Ann. 2: 513; Lehm. Rev. Pot. 187. 
Walt. Fl. Car. 150; Michx. Fl. Bor. Am. 1: 303; Pursh, Fl. Am. Sept. 354; EI. 
Sk. Bot. 8. C. & Ga. 1: 574: Nutt. Gen. N. A. Pl. 1: 310; Hat. Man. Ed. 2: 378; Ed. 
3: 407; Ed. 5: 343; Ed. 6: 280; Ed. 7: 457; Barton, Comp. Fl. Phil. 236; Torr. FI. 
U.S. 496 ; Comp. 210; Darl. Florula Cest. 65 ; Flora Cest. 303; Ed. 3: 78; Beck, Bot. 
106; Ed. 2: 99; Torr. & Gray, Fl. N. Am. 1: 443; Eat. & Wr. N. Am. Bots Lor: 
BLN. Y. 208; Gray, Man: Ed. 1: 122; Ed. 2: 118; Hd. 5: 154: Noll, Fl. Ran 43a. 
Gray, Pac. R. R. Rep. 12: book 2, part 2: ee Chapman, FI. So. States, 124 ; Darby, 
Bot. So. States, 303; Wood, Class Book, 342; Bot. & Flor. 107; Wats. Proc. Am. Acad. 
8: 562; Holz. Cont. U.S. Nat. Herb. 1: - 905 ; Wats. & Coult. in Gray, Man. Ed. 6: 160; 
Bailey, in Gray, F. F. & G. Bot. Rev. Ed. 152; Rydb. Bull. Torr. Bot. Club, 24: 10; 
Britt. & Brown, Ill. Fl. 2: 216. 
Lehm. in Hook. Fl. Bor. Am. 1: 192; Provancher, Fl. Can. 188; Macoun, Cat. 
Can Pe 4: 
Fragaria Canadensis Crantz, Inst. 2: 178. 
Ittusrrations: Nestler, Mon. Pot. pl. 10. f. 1; Britt. and Brown, Ill. Fl. 2: f. 1935. 
Root perennial, branched. Stems few, slender, silky-villous, generally with spread- 
