114 : BOTANY. 
hairy—Ash Creek, Arizona, at 5,225 feet altitude (310), and Mount 
Graham, Arizona, at 9,250 feet altitude (399). The form from Mount 
Graham is decidedly the more villose. 
PoTenTILLA FRUTICOSA, L.—Colorado (383). Var. Alpina, Watson.— 
“Low and compact, the leaves very short (2 lines long), linear and 
revolute; same as 342. [Watson in vol. v, King’s Report], Utah.” 
PorentTitta Ansertna, L—Utah; Colorado ( 382). 
SIBBALDIA PROCUMBENS, L.—Colorado, at 11,000 feet altitude, (403). 
Though Torrey and Gray (Fl. N. Amer.) state the only difference between 
Sibbaldia and Potentilla is in the minute petals and fewer pistils and stamens 
of the former, and though Bentham and Hooker (in Gen. Plant.) do actually 
unite these genera, I have refrained from following so reliable authorities, 
because Mr. Watson has excluded Sibbaldia, Horkelia, and Ivesia from his 
revision of Potentilla. At the same time I do not hesitate to express my 
opinion that the distinction between Potentilla and Sibbaldia will not stand. 
Ivesta* pEPAUPERATA, Gray (in Herb.) and Brewer and Watson (in 
Fl. Cal.). Potentilla depauperata, Engelm. (Gray, in Proc. Am. Acad. vol. 
vii, p. 399).—Villose throughout, 1-1$° high; stem-leaves with 10-20 pairs 
of leaflets, 2-4” long, 2” wide, 3-lobed or parted, thickish, villose-pubescent; 
inflorescence cymose-paniculate; bractlets about half as long as the purple 
calyx-lobes; stamens 5; filaments filiform, opposite the calyx-lobes and in 
the sinuses of the adherent, 5-angled disk; ovaries 2, or frequently 1 
aborting as the other developes, immersed in the disk, the mouth of which 
is filled with erect, rather stiff, white hairs—San Francisco Mountains, 
Arizona (369, Loew). 
Ivesta Gorponi, Torr. & Gray.— Buffalo Peak, Colorado, 12,000 feet 
altitude (386). One single location found, and only a few specimens, in a 
clump of Geum Rossii. ; 
Cuamarnopost EREcTA, Bunge.—2-4’ high, villose pubescent, branch- 
*Ivesta, T. & G.—‘“ Calyx campanulate, or cyathiform at base, 10-cleft. Stamens definite (5, 10, 
15, 20); filaments slender, narrowly subulate or filiform. Carpels few, sometimes solitary, upon a small 
villous receptacle; style subterminal. Leaves pinnate, leaflets very numerous, small, palmate or 
pedately-parted, closely crowded, sometimes quasi-verticillate or imbricate on all sides of the rachis; 
petals broadly obovate, scarcely unguiculate, becoming spatulate.”—Gray, Proc. Am. Acad. vi, 530. 
t opos, Bunge.—Calyx without bractlets, 5 erect lobes, valvate. Stamens short, opposite 
to the petals. Disk lining the calyx-tube, the margin with a thick crown of rather rigid hairs, Achenia 
5-10; styles arising from near the base of the ovaries, where they are articulated, deciduous, slightly 
