MEMOIRS FROM THE DEPARTMENT OP BOTANY OF COLUMBIA UNIVERSITY 47 



Don, Gard. Diet. 2: 550; Dietr. Syn. 3: 178; Walp. Rep. 2: 31 : Walp. Ann. 2: 515; 

 Lehm. Rev. Pot. 198; DC. Prod. 2: 573. 



Michx. Fl. Bor. Am. 1: 302; Pursh, Fl. Am. Sept. 354; Torr. Fl. U. S. 496; 

 Comp. 209; Eat. Man. Ed. 2: 379; Ed. 3: 407; Ed. 5: 343; Ed. G: 280; Ed. 7: 457; 

 Eat. & Wr. N. Am. Bot. 372; Beck, Bot.. 106; Ed. 2: 98. 



Hook. Fl. Bor. Am. 1: 193; Macomi, Cat. (Jan. PI. 136 and 516; Richardson, 

 Frankl. 1st Journ. 739; Ed. 2: App. 20. 



Potentilla dichotoma Moench, Meth. 659. 



PotentiUa geminiflora Schrank. in Regensb. Bot. Zeit. 1823, 216.* 



Potentilla grossa Dougl. ; Hook. Fl. Bor. Am. 1 : 193, as synonym. 



f PotentiUa millegrana Douglas ; 1. c. 



Frag aria parviflora Lam. Fl. Fr. 3 : 113. 



Potentilla fragariaefolia Hoppe ; Lehm Rev. Pot. 198, as synonym. 1856. 



Potentilla trifolia Gilib. Fl. Lith. 5 : 249.* 



Potentilla trifoliata Gilib. Syst. PI. Europ. Supp. 361.* 



Fragaria Norvegica Crantz, Inst. 2: 179. 



Fragaria dubia Crantz, Stirp. Inst. Fasc. 2 : 24.* 



Illustrations; Dietr. Fl. Boruss. 12: pi. 797 f Fl. Dan. p/. 171; Sturm, Deutschl. 

 Fl. 92: pi. 2.* 



Leaflets oblong rather than obovate, pubescence fine, rarely with longer hairs. 



The form common in Europe and Western Asia is comparatively rare in this country 

 and seems to be introduced, as it is most common on the east coast. The true P. 

 Monspeliensis is evidently a native. 



Potentilla Labeadorica Lehm. Ind. Sem. Hort. Bot. Hamb. 1849: 12. 1849. 



Stirp. Pug. 9 : 12 ; Eev. Pot. 201 ; Walp. Ann. 2 : 516 ; Rydb. Bull. Torr. Bot. Club, 23 : 262. 



This has generally been included in P. MompeVievds. From Lehmann's description it seems quite 

 distinct, differing in being very low, 1-3-flowered, nearly glabrous, with leaves resembling those of P. 

 liana, large stipules and larger flowers. I have not seen any specimens. A form of P. Mompelienns, 

 nearly glabrous, and with larger flowers has been collected by A. P. Low (No. 4986, 1894), and Spread- 

 borough (No. 16316, 1896), but it is not subacaulescent as the description of P. Labradorica calls for. 



20. Potentilla pentandra Engelm. 



Potentilla pjentandra Engelm.; Torr. & Gray, Fl. N. Am. 1 : 447. 1840. 

 Dietr. Syn. PI. 3: 184; Walp. Rep. 2: 35; Ann. 2: 515; Lehm. Stirp. Pug. 9: 75: 

 Rev. Pot. 197. 



