192 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
Petals ochroleucous; sepals broadly ovate, mucronate. 10. D. Wrangeliana. 
Petals and sepals more or less reflexed in anthesis, the former yellow, not exceeding the latter. 
11. D. reflexa. 
Style filiform or nearly so, more than twice as long as the achene. 
Plant about 2 dm. high; petals much longer than the sepals ; leaflets rhombic-obovate. 
12. D. rhombifolia. 
Plant 4-6 dm. high; petals about equalling the sepals; leaflets cuneate-flabellate. 
13. D. cuneifolia. 
1. Drymocallis arguta (Pursh). 
Potentilla arguta Pursh, Fl. Am. Sept. 756. 1814. 
Poir. in Lam. Enc. Meth. Suppl. 4: 538; Lindl. Bot. Reg. pl. 1379; Don, Gard. 
Dict. 2: 558; Dietr. Syn. Pl. 8: 186; Walp. Rep. 2: 35; Ann. 2: 477; Lehm. Rev. 
Pot. 50. 
Hat. Man. Ed. 7: 458; Beck, Bot. ae Ed. 2, 100; Bigelow, Pl. Bost. 219; Torr. 
& Gray, Fl. N. ee I 2-445 Bat. & Wr. N. Am: Bot. 3743 Torr: Bl. Ne Y¥..209); Prem: 
Ist Exp. 89 [174]; Gray, Man. Ed. 1,122; Ed. 2, 119; deb: 164 Noll Hs Ras4s3- 
Pac. R. R. Rep. 12: book 2, part 2: 39; Wood, Class Book, 343; Bot. & Flor. 108; 
Porter, U. 8. Geol. Surv. 1870: 475; Wats. Proc. Am. Acad. 8: 551; Porter & Coult. 
Syn. Fl. Colo. 35 (in part); Coult. U. 5. Geol. Surv. 1872: 765; Man. Rocky Mts. 
83; Wats. & Coult. in Gray, Man. Ed. 6, 158; Bailey, in Gray, F. F. & G. Bot. Rev. 
Hd. 151; Rydb. Cont. U. S. Nat. Herb. 3: 157 and 496; KI Nebs Zils l¢  eBritberds 
Brown Ill. Fl. 2: 209. 
Richardson in Frankl. Ist Journ. 739; Ed. 2: App. 20; Lehm. in Hook. FI. Bor. 
Am. 1:186; Provancher, F]. Can. 189; Macoun, Cat. Can. Pl. 136 and 516. 
Geum agrimonioides Pursh, Fl. Am. Sept. 351. 1814. Not P. agrimonioides Bieb. 
Sprengel, Syst. Veg. 2: 543; Poir. in Lam. Enc. Suppl. 5: 578; Seringe in DC. 
Prodr. 2: 564. 
Potentilla confertiflora Torr. Fl. U.S. 499. 1824. 
Spreng. Syst. Veg. 4: 198; Lehm. Stirp. Pug. 8: 24; Torr. Comp. Fl. U.S. 211. 
Bootia sylvestris Bigel. Fl. Bost. Ed. 2, 206. 1824. 
Potentilla Pennsyluwnica var. arguta Torr. Ann. Lye. N. Y. 2: 197, 127. 
Potentilla obliqua Dougl. (as a syn.) in Hook. Fl. Bor. Am. 1: 186. 1883. 
Potentilla ferruginea Dougl. (as a syn.) 1. ¢. Not Paxton. 
Potentilla glutinosa Pursh (as a syn.) in Lehm. Rev. Pot. 50. 1856. 
Potentilla arguta vay. ferruginea Lehm. Rey. Pot. 50. 1856. 
Potentilla Bigeloviana Wenderoth, Sem. Hort. Marb. 1841*. 
Linnaea, 16: Litt. 112. 
