64 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 



Potentilla gracilis rigida Coville, Cont. U. S. Nat. Herb. 4: 96. 1893. 



Potentilla etomentosa Eydb. Bull. Torr. Bot. Club, 24 : 8. 1897. 



(?) Potentilla olopetala Lehm. Rev. Pot. 78. In part. 1856. 



Stem 4-5 dm. high, slightly hairy, erect, from a stout caudex. Stipules ovate to lanceo- 

 late, entire ; leaves with long petioles, digitate, of about 7 leaflets, glabrate above, slightly 

 silkj'-strigose beneath but without any trace of tomentum ; leaflets obovate, 3-5 cm. long, 

 crenate or serrate with ovate teeth. Hypanthium hirsute ; bractlets oblong, a little shorter 

 than the ovate pointed sepals. Petals obcordate, scarcely exceeding the sepals. 



This most resembles P. pulcherrima, but is perfectly without tomentum and only 

 slightly hairy. It resembles P. Nuttallii only in the lack of tomentum. It has the crenate 

 obovate leaves of P. imlcherrima, and if not held distinct must be regarded as a variety 

 of that species. The distribution is quite different, P. pulcherrima not having been col- 

 lected in California. The following are the specimens seen : 



California: Fremont, No. 162, 1846 (type); J. S. Newberry (Williamson Expedi- 

 tion); Munson & Hopkins, 1889; Coville & Funston, No. 1399, 1891 ; J. G. Lemmon, 

 No. 84. 



Wyoming: Stevenson, Nos. 64 and 71, 1894 ; F. H. Knowlton, 1887. 



41. Potentilla heptaphylla Mill. 



PotentiUa heptaphylla Mill. Gard. Diet. Ed. 8 : Xo. 7. 1768. 



Ser. in DC. Prod. 2 : 586 ; Lehm. in Mert. & Koch, Fl. Deutsch. 528 ; Ind. Sem. Hort. Hamb. 

 1831:* Kev. Pot. 76. 



Wats. Proc. Am. Acad. 17 : 353. 



Potentilla intermedia Xest. Men. 49. 181(5. Xot L. 



Lehm. Men. 100 ; Ser. in DC. Prod. 2 : 577 ; Spreng. Syst. Veg. 2 : 536. 



Potentilla Nestleriana Tratt. Ros. Mon. 4 : No. 91.* 



Potentilla Halleriana Tratt. Ros. Mon. 4 : Xo. 86.* 



Potentilla alchemilloides Schlecht. Mag. Ges. Xaturf. Fr. Berlin, 7 : 291 (in part).* Not Lapeyr.' 



Illustrations : Xestler, Monog. pi. 8. 



Stem slender, 3-4 dm. high, sparingly silky, 1-2-leaved. Basal leaves with with long slender 

 petioles, digitately 5-foliolate, silky-ciliate or glabrate ; leaflets 3-5 cm. long, obcordate, thin, coarsely 

 serrate. Cyme narrow, almost racemose. Bractlets lanceolate, two-thirds the length of the lanceolate 

 sepals. Petals yellow, obcordate, nearly twice as long as the sepals. 



The Mexican specimens seem to have a somewhat narrower cyme than the European but differ in 

 no other respect, as far as I can determine. 



Mexico, State of Coahuila : Dr. E. Palmer, Xo. 327, 1880. 



' Several less important synonyms are omitted. 



