496 



type specimens. It also tlisagrces in several ]>oiuts with the ilescriiition of Professor 

 (ireeiie, espi'cially in the size of the liowt-rs. Terhaps all tlio Opulasters of North 

 America are but one very variable species. 



Hills nt-ar Harneys Peak, altitude 2, 1(X) ni.. July 21. Au-iust 17 (No. t!54). 



Rubus parviflorus Nutt. Gen. i. :W8 (1818). 



Not uncommon: Elk Canyon, altitude 1,;>(>0 m.. June 2!t; Lead City, altitude 

 1.600 m., July 1 (No. 655). 



Rubus americanus (Pers.) Britton. Mem. Tnrr. Club. v. ISTt (1891) ; Hiifius naxaiilis 

 amrriaiiiiis Pits. Syn. ii, 52 (1807). 



Canyon north of Runkels, altitude 1,:>00 m.. .luue 30; Lead City, altitude 1,6(M) m., 

 July 1 (No. (;:.()). 



Rubus strigosus 3Ix. Fl. i, 297 (1803). 



Little Elk Canyon, altitude 1,200 m.. June 28; Elk Canyon, altitud.- ^,^^0(^ ui,. Juno 

 29: l^ochford. altitude 1,700 m., July 12 (No. 657). 



Cercocarpus parvifolius Nutt. ; Hook. & Am. Hot. Beech. Suppl. 337 (1841). 



^'. ry rare : Hot S]>ring8, altitude 1,100 ra.. June 13 (No. 658). 



Geum strictuni Ait. llort. Kew. ii, 217 (1789). 



Lead City, altitude 1,600 ni., July 6 (No. 659). 



Geum macrophyllum Willd. Euum. i, 557 (1809). 



I think this Avonld better be regarded as a variety of the preceding. Ra])id City, 

 altitude 1,0.".0 m., June 25; Eochford, altitude 1,6(X) ni.. July 11 (No. 1206). 



Geum ciliatum Pursh, Fl. i, 352 (1814). 



This name precedes G. trijlorum in Pursh's Flora.' Common: Cnster, altitude 

 1,700 m.. May 28; Elk Canyon, altitude l,2fX) m., June 29; Lead City, altitude 

 1,600 m., July 1 (No. 660.) 



Fragaria virgiuiaua Duchesne, Hist. Nat. Frais. 201 (1766). 



A low, small-leafed form, collected early in the spring. Custer, altitude 1.650 m., 

 June 1 (No. 661). 



Fragaria vesca americana Porter, Bull. Torr. Club, xvii, 15 (1890). 



Custer, altitude 1,700 m., June 6; Hot .Springs, altitude 1,100 m., .lujio 14 : Rapid 

 City, altitude 1,000 m., June 25; in fruit, Custer, August 20 (No. 662). 



A slender form with very tliin, cuneate, narrow leaves, 3 times as long .as broad, 

 toothed towards the apex, the peduncles slender, about the length of the leaves, was 

 collected near Sylvan Lake, altitude 1,900 m., July 18 (No. 663). 



Potentilla arguta Pursh, Fl. ii, 736 (1814). 



The llowers ajtpear to be always white, but they turn yellow in drying. Hills: 

 Hormosa, altitude 1,100 m., June 22; Lead City, altitude 1,700 m.. July 6 (No. 66^1). 



Potentilla glandulosa Lindl. Bot. Reg. xix, t. 1583 (1833). 



In this the llowers are light yellow, the cyme more difluse than usual. Hills: 

 Rochford, altitude 1,700 m., July 12 (No. (i65). 



Potentilla monspeliensis L. Sp. PI. i, 499 (1753). 



This includes /'. nomgiai L. described lower on the same page. Hot Springs, 

 altitude 1,050 ni., June 14 ; Hermosa, June 22; Rajiid City, altitude 1.000 ni., June 25; 

 Elk Canyon, altitude 1,200 ni., June 29; Rochford, altitude 1,600 m., July 11. The 

 specimens from the latter place are very slender and .approach P. riralis (No. 666). 



Potentilla pennsylvanica strigosa Pursh, Fl. i, 3.56 ( 1814). 



Common : Hermosa, allitude 1, (•.">() m., June 23; Rochford, altitude 1,700m., July 11; 

 Cnster, filtitnde 1,625 m., August 13 (No. 667). 



Potentilla hippiaua Lehm. Nov. Stirp. Pug. ii, 7 (18.30). 



Rochford, altitude 1,600 m., July 12; Custer, altitude 1.650 m., July 18 (No. 668). 

 These epecinieus seem to be typical, agreeing fully with the description and plate in 



' Pursh, Fl. ii, 736. 



