40 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
Tt much resembles species of the following group in general habit, but is a true perennial. Central 
America and Mexico. 
Guatemala: J. D. Smith, No. 2144, 1890 ; “Scherzer. 
Potentilla heterosepala Mexicana Fritsch. 
Potentilla heterosepala Mexicana Fritsch, Bot. Jahrb. 11: 315. 1890. 
Smaller ; stems 8-15 em. long ; leaves smaller, mostly ternate ; inflorescence more simple ; flowers 
about 7 mm. in diameter. 
Mexico: *Wawra, No. 913 and 936 ; H. E. Seaton, No. 229. 1891. 
§ 4. SUPINAE. 
13. Potentilla paradoxa Nutt. 
Potentilla paradoxa Nutt.; Torr. & Gray, Fl. N. Am. 1: 437. 1840. 
Lehm. Stirp. Pug. 9: 74; Rev. Pot. 194; Walp. Rep. 2: 32; Ann. 2: 515. 
Gray, Sel Waehts =i 2668-52 5955+) Mam Da 2° 14S) dis: 154; Pac. R. R. Rep. 
12: book 2, part 2: 39; Torr. Mex. Bound. Surv. 64; Wood, Class Book, 343; Bot. 
& Flor. 107; Britton, Bull. Torr. Club, 21 : 31: Rydb. El Neb: 2117+ Bull” Dorr Bot: 
Club, 23: 259; Britton & Brown, Ill. Fl. 2: 213. 
Hemsley, Biol. Cent. Am. 1: 376. 
Potentilla supina Michx. F]. Bor. Am. 1: 304. 1803. Not L. 
Lehm. Mon. Pot. 20 and 42 (in part) ; Sprengel, Syst. Veg. 2: 5385; Don, Gard. 
Dict. 2: 557 (in part). 
Pursh, Fl. Am. Sept. 356; Nutt. Gen. N. A. Pl. 1: 310; Eat. Man. Ed. 2: 380; 
dat 4 5S hom Weea498) Comp. 210; Ann. Lye. Nat: Hist. N. Y, 2: 197; Beck, 
Bot. 107; Ed. 2: 99; Eat. & Wr. N. Am. Bot. 373; Wats. Proc. Am. Acad. 8: 558 ; 
Coult. Man. Rocky Mts. 84; Cont. U. 8. Nat. Herb. 2: 106; Wats. & Coult. in Gray, Man. 
Ed. 6: 159; Bailey in Gray F. F. & G. Bot. Rev. Ed. 151. 
Hook. FJ. Bor. Am. 1: 187; Macoun, Cat. Can. Pl. 136 and 516. 
Intusrrations: Lehm. Rev. Pot. pi. 62, f. 3; Britton & Brown, Ill. Fl. 2: f. 1925. 
Puate 5, f. 1; dissection of flower, f.2; nearly mature pistil, f. 3; stamen, f. 4; fruiting 
hypanthium and calyx, f. 5. 
Stem spreading or ascending, seldom erect, about 2-5 dm. high, leafy, at first sub- 
simple, later much branched, sparingly hairy, or glabrate below, hirsute above. Stipules 
broadly ovate, acute, 5-15 mm. long, generally toothed and ciliate. Leaves short-peti- 
oled, pinnate, the lower with 4—5 pairs of leaflets, in age nearly glabrous, and of a light green 
