MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY ol 
P. ramulosa resembles P. subviscosa, but is a much larger plant. The leaves, by their 
size, pubescence and form, remind one somewhat of P. Nuttallii and P. Blaschkeana. The 
leaflets reach a length of even 7 cm. The general habit, form of calyx and corolla, ete.; 
are those of P. subviscosa, but the achenes are striate. The following specimens have 
been examined ¢ 
Arizona: J.G. Lemmon, No. 399, 1881; H. H. Rusby, 1883; G. C. Nealley, No. 
110, 1891. 
§ 8. AUREAE. 
32. Potentilla Sierrae-Blancae Wooton & Rydberg. 
ILLusTRATIONS: Pare 18, f. 3; pistil, f 4; fruiting hypanthium and calyx, f. 5. 
Perennial, with a branched caudex covered with the brown remains of stipules and 
leaf-stalks. Basal leaves numerous, with slender petioles 83-5 em. long, digitately 5-folio- 
late, almost perfectly glabrous and dark green; leaflets 1-2 cm. long, almost oblong-linear, 
slightly tapering downward, entire except the 3-toothed apex. Stipules lanceolate, cili- 
ate. lowering stems very slender, almost leafless and generally 1-flowered, 4-6 em. 
long, scarcely exceeding the leaves, finely and sparingly villous. Hypanthium slightly 
villous, in fruit about 5 mm. in diameter; bractlets lnear-oblong, obtuse, about a third 
shorter than the ovate-lanceolate sepals. Petals unknown. 
In the habit and form of the leaves this most resembles P. bicrenata, but is more 
tufted and almost glabrous. It has been collected only in fruit. 
New Mexico; EK. O. Wooton, No. 469 (type), collected in the White Mountains, Aug. 
16, 1897. 
33. Potentilla ranunculoides Humb. & Bonpl. 
Potentilla ranunculoides Humb. & Bonpl; Nestler, Mon. Pot. 26 and 56. 1816. 
Lehm. Mon. 25 and 114; Poir. Suppl. 4: 542; DC. Prod. 2: 576; Sprengel, Syst. Veg. 2: 537 
H.B.K. Noy. Gen. et Sp. 4: 216; Hemsley, Biol. Cent. Am. 1: 376; Don, Gard. Dict. 2 
Dietr. Syn. Pl.3: 181; Walp. Ann. 2: 498; Rydb. Bull. Torr. Bot. Club, 23: 397. 
Potentilla macrorhiza Willd.; Schlecht. Mag. Ges. Naturf. Fr. Berlin, 7: 292.% 
IntustrAtTions: Nestler, Mon. Pot. pl. 3, f. 1. 
Stem short, erect, few-leaved and few-flowered, slightly silky-strigose. Basal leaves digitately 5-7- 
foliolate ; stem leaves small, ternate, all glabrous except on the veins and the margins ; leaflets rounded- 
obovate, thick, strongly veined, crenate above the middle; bractlets oblong, obtuse, about half as 
long as the lanceolate acuminate sepals. Petals obcordate, one-half longer than the sepals. 
Near the base of the mountains of Central Mexico. 
