es 
F- 
PHASES OF POTENTILLA. 105 
“18. P. Tir1net — Horkelia Tilingi, Regel, Gart. Fl. 1872, 
t. 711: Horkelia tridentata, Torr. Pac. R. Rep. iv. 84. t. 6 
(1857); Gray, Proc. Am. Aead. vi. 528 & 530; Brew. & Wats. 
l c.: Ivesia tridentata, Gray, l. c. vii. 338. 
“19. P. renurtopa — Horkelia tenuiloba, Gray, l. e. vi. 
529 (1865); Brew. & Wats. l.c. 182.— This has lately been 
found as far down the Californian Coast Range as the County 
of San Luis Obispo; bat it is still to be considered a rare 
species. 
^90. P. purpurascens — Horkelia purpurascens, Wats. 
Proc. Am. Acad. xi. 148 (1876); Brew. & Wats. l. c. : Roth- 
rock, Bot. Wheeler Exp. 360 t.3. ` 
.91. P. pEPAUPERATA, Engelm. in Gray, Proc. Am. Acad. 
vii. 399 (1868): Ivesia depauperata, Gray, in Brew. & Wats. 
l. e. 184 (1876). 
: 22. P. Kvon — Ivesia Kingii, Wats. Bot. King Rep. 90 
& 448 (1871); Brew. & Wats. l. c. 
“23. P.Barrgx: — Ivesia Baileyi, Wats. l. e.; Brew. & 
Wats. 1. c. 
24. P. NEwnERRYL Gray, Proc. Am. Acad. vi. 532 (1865); 
Ivesia gracilis, Torr. & Gray, Pac. R. Rep. vi. 72. t. 11 (1857); 
Brew. & Wats. l. c. 
/95. P. ProkERINarI — Ivesia Pickeringii, Torr. Bot. Wilkes 
Exp. 988. t. 4 (1962); Gray, l. c. 531; Brew. & Wats. l. c. 
182. 
P. vxavtcvLATA — Ivesia unguiculata, Gray, L e. vii. 
* 96. 
339 (1868); Brew. & Wats. 1. c. 183. 
“27. P. WEBBERI — Ivesia Webber, Gray, l. c. x. 71 (1874); 
Brew. & Wats. l. c. 
