28 [84] BOTANY. 
Cuammpatia Fottorosa, Benth. Pl. Hartw. p. 308; Torr. Pl. Frémont., p. 11, t. 6. Hill-sides 
and ravines, Sonora; May 9. 
Cowanta Mexicana, Don in Linn. Trans. 14, p. 574, t.°22; Gray, Pl. Wright. 2, p. 55. 
Mountains near the Zuni river. In leaf only. 
Cowanta Sranspurrana, Zorr..in Stansb. Rep., p. 386, t. 3. Ojo Piscado; November 19. 
San Francisco mountain, and Lithodendron creek, New Mexico; December. Although very 
near C. Mexicana it seems to retain its characters. 
Acana TriripaA, Ruiz & Pav. Fl. Peruv. 1, p. 67, t. 104. A pinnatifida, Hook. & Arn. 
Bot. Beechey, p. 339; Torr. & Gray, Fl. 1, p. 430, non Ruiz & Pav. San Geronimo Ranch; 
April 12. 
ApENosToMa FasctcuLaTa, Hook. d& Arn. Bot. Beechey, p. 139 d& 338, t. 30; Torr. & Gray, 
Fl. 1, p. 430. Sandy hills near Cajon Pass, March 16, (with the fruit of the preceding year.) 
Hill-sides, near Ion valley ; May 18. 
ALCHEMILLA ARVENSIS, Scop. Fl. Carn. 1, p. 115; Torr. & Gray, Fl. 1, p. 432. A. occiden- 
talis and A. cuneifolia, Nutt. in Torr. & Gray, Fl.l.c. Hill-sides, Benicia, April 24. Low 
places near San Francisco, April 8. We find the characters of this species to be quite variable, 
so as to include the two species of Nuttall. 
Fautueta PARADOXA, Torr. in Emory’s Rep. 2. Cations of the Pecos, New Mexico; September. 
Horxettra capitata, Lindl. Bot. Reg. sub fol. 1997; Torr. & Gray, Fl. 1, p. 434. San Gabriel, 
California; March 21. In Dr. Bigelow’s specimens, as also in those collected at Los Angeles by 
Mr. Wallace, the petals are quite as long as the calyx. Agrees pretty well with our Douglasian 
specimen, except that the cymes are not capitate ; but in most of the species of this genus the 
inflorescence is at first dense, and unfolds with age. 
HorkewtA Fusca, Lindl. Bot. Reg.t. 1997. Var. TENUILOBA: canescenti-villoso; foliolis 25-30, 
latissime-cuneatis profunde-palmitifidis; laciniis anguste-linearibus ; cymis laxiusculis; bracteolis 
calycis dentibus subeequalibus; petalis cuneatis, apice bilobis. Lagnna of Santa Rosa creek, 
California; May 1. Radical leaves 4-6 inches long, mostly villous with greyish hairs; leaflets 
less than half an inch long, palmately 5-7-cleft; the segments scarcely half a line wide; cauline 
leaves with a much smaller number of leaflets, with 3-4 segments. Stem about a foot high. 
Cyme somewhat open when the inflorescence is fully developed. Flowers about as large as in 
H. parviflora, Proper segments of the calyx triangular-lanceolate; the bracteoles narrowly 
lanceolate. Petals white, narrowly cuneiform, deeply notched at the summit. 
HORKELIA TRIDENTATA (sp. nov.): subsericeo-villosa; caulibus patenti-diffusis; foliolis 7-11 
oblongo vel obovato-cuneatis apice plerumque tridentatis; stipulis profunde laciniatis; cymis 
densifloris; bracteolis calycis segmentis brevioribus et angustioribus; petalis obovato-spathulatis, 
(Tab. VI.) Wet ravines, Duffield’s Ranch, Sierra Nevada; May 10; and hill-sides, Mammoth 
Grove, California; May 15. A span or more in height. Leaflets of the radical leaves 9-11, 
about half an inch long, almost uniformly 3-toothed at the apex, the intermediate tooth often 
smaller, otherwise entire; those of the cauline leaves (5-7) narrower. Petals at first nar- 
rowly spatulate, but broader when fully expanded. Somewhat resembling H. parviflora; the 
flowers being quite as small as in that species. 
PorenTmLLA PENNsYLVANICA, var. Hipprana, Torr. & Gray, Fl. 1, p. 438. Sandia mountains, 
New Mexico; October; in fruit. Some of the specimens nearly accord with P. diffusa, Gray, 
Pl. Fendl. p. 41, which Prof. Lehmann, the learned monographer of the genus, has no doubt cor- 
rectly arranged asa variety of his P. Hippiana, viewed by him as distinct from P. Pennsylvanica. 
PorentibLa ANSERINA, Linn. Sp. 1, p. 495; Torr. & Gray, Fl. 1, p. 444. Wet places, San 
Domingo, New Mexico; October. Near San Francisco, California ; April 3. 
PoTENTILLA RIVALIS, Nutt. in Torr. & Gray, Fl.l.c. Wet places near San Francisco, April 8. 
a LANDULOSA, Lindl. Bot. Reg. t. 1583; Torr. & Gray, Fl. 1, p. 446. Mountains 
near Oakland, California; April 4. 
