104 PITTONIA. 
‘ll. P.caPrrATA — Horkelia capitata, Lindl. l. ¢.; Torr. 
& Gray, L c. 
12. P. cowaEsTA, Baillon, Hist. i. 369 (1869): Horkelia 
congesta, Hook. Bot. Mag. t. 9880 (1829); Torr. & Gray, l. c. 
434; Gray, Proc. Am. Acad. vi. 529; Brew. and Wats. Bot. 
Cal. i. 181: H. hirsuta, Lindl. l. c. fide Gray, l. c. 
v 13. P. AnpERsontt = Horkelia parviflora, Nutt. in Torr. 
& Gray, l c. (1840); Gray l. c.—The name parviflora, al- 
though not admitted by Lehmann as designating any valid 
species of Potentilla, was employed by Desfontaines and 
again by Gaudichaud, therefore, as I judge, it may not be 
again employed. The >P. Nuttallii, Lehm. precludes our 
dedicating this species to its first collector. It may be noted 
that in Watson's Index it is reduced to H. fusca. I am unac- 
quainted with the plant, but Nuttall's judgment is what I de- 
fer to, for he knew it best. 
"14. P. Howetuu. Slender, a foot high, elothed with a 
spreading villous pubescence: leaflets in 10—15 pairs, nar- 
rowly oblong, scarcely more than 2 lines long, mostly entire 
and acute, sometimes bifid: stems paniculately branching 
above, but the cymes congested, at least in early flowering : 
ealyx-segments and bracteoles similar, broadly lanceolate : 
petals spatulate, obtuse: filaments petaloid-dilated, abruptly 
acuminate, 
Near Waldo, Oregon, June 19, 1884, Thomas Howell. The 
specimens were distributed as * Horkelia congesta, var. 
latiloba, Watson ;" but I am unable to diseover here any 
special resemblance to that species. 
“15. P.sERICATA — Horkelia sericata, Wats. Proc. Am. 
Aead. xx. 364 (1885). 
^16. P. Artzonica = Ivesia pinnatifida, Wats. 1. c. 
417. P. LEMMONI — Ivesia Lemmoni, Wats. l. c. 365. 
Buc se SAE ool 
