118 MEMOIRS FEOM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 



silky cuneate leaflets, which are slightly crenate at the apex. P. crimta grows on the 

 dry plains of Arizona, New Mexico, southern Utah and Colorado. 



Arizona: Wm. Thompson, No. 20, 1872; J. G. Lemmon and wife, 1884; Munson 

 & Hopkins, 1889; M. E. Jones, No. 3049, 1884; Edw. Palmer, No. 482, 1890: L. F. 

 Anderson, 1869. 



New Mexico: A. Fendler, No. 199, 1847 (type); Alice Eastwood, 1892. 



Colorado: Brandegee, No. 1183, 1875. 



Utah: M. E. Jones, No. 6004, 1894; Mrs. E. P. Thompson. 



105. Potentilla Lemmoni (Wats.) Greene. 



Iveaia Lemmoni Wats. Proc. Am. Acad. 20: 365. 1885. 



Potentilla Lemmoni Greene, Pittonia, 1 : 104. 1887. 



Rydb. Bull. Torr. Bot. Club, 24 : 4. 



Illustrations : Plate 55, f. 1 ; dissection of flower, /. 2 ; stamen, /. 3 ; pistil, /. 4. ; 

 fruiting hypanthium and calyx, /. 5. 



Caudex branched. Stems 3-4 dm. high, branched, slender but strict, more or less 

 tinged with brown, slightly silky-strigose. Upper stipules ovate-lanceolate, entire, 

 5-10 mm.long, the lower brown, scarious and 15 mm. long. Basal leaves several, pin- 

 nate, grayish appressed-silky ; leaflets 3-5 pairs, 1-2 cm. long, of rather firm texture, 

 oblong, entire or 3-toothed at the apex, or with a few additional small teeth above the 

 middle. Cyme branched, open, with slender pedicels. Hypanthium finely strigose, 

 cupulate, in fruit 3-4 mm. in diameter ; bractlets linear, about half as long as the lanceo- 

 late acuminate sepals. Petals j^ellow, obovate, about equalling the sepals in length. 



This species should, I think, be placed as an appendix to this group. It has no re- 

 lationship to any of the Lvesias, and is a true Potentilla in every respect, except as to 

 the number of pistils, which are only half a dozen or so. Its nearest relative is, without 

 doubt, Potentilla criniia, from which it differs by the longer, narrower and fewer leafiets, 

 the sparser pubescence, the few pistils and the longer hairs on the receptacle. 



New Me:rico: Lemmon. 



§21. CANDICANTES. 



106. Potentilla candicans Humb. & Bonpl. 



PotenliUa candicans Humb. & Bonpl.; ISTestler, Mon. Pot. 23 and 34. 1816. 



Lehm. Mon. 22 and G7 ; H.B.K. Xov. Gen. & Sp. 6 : 216 ; Poir. Supp. 4 : 542 ; Ser. in DC. Prod. 

 2 : r,S2 ; Spreng. Syst. Veg. 2 : 535 ; Presl, Epim. Bot. 198 ; Schlecht. Linnaea, 5 : 572 ; Lehm. Kev. 31; 



