50 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
22. Potentilla inclinata Vill. 
Potentilla inclinata Vill. Hist. Pl. Dauph. 3: 567. pl. 45. 1789. 
Willd. Sp. Pl. 2: 1102; Poir. in Lam. Enc. Meth. 5: 591; Persoon, Syn. Pl. 2: 54; Haller, 
Syn. Pot. 55; Walp. Ann. 2: 492; Ledeb. Fl. Ross. 2: 47; Lehm. Rev. Pot. 100.’ 
Rydb. Bull. Torr. Bot. Club, 24: 9. 
Potentilla canescens Besser, Pr. Fl. Gall. 1: 330. 1809.* 
Ser. in DC. Prod. 2: 578; Spreng. Syst. 2: 537 ; Lehm. Mon. 47 ; Nestler, Monog. 47. 
Potentilla pilosa Macoun, Cat. Can. Pl. 139 and 517. 1888-6. Not DC. 
ILLusTRATIONS: Sturm, Deutschl. Fl. 91: pl. &;* Vill. Hist. Pl. Dauph. 3: pl. 45. 
Stem rather simple, erect, or seldom decumbent at the base, leafy, more or less grayish-tomentu- 
lose and sparingly hirsute, branched above with rather erect branches. Stipules lanceolate, entire. 
Leaves, except the uppermost, quinate, silky-hirsute on both sides and grayish-tomentulose beneath. 
Leaflets oblanceolate, deeply toothed with oblong, rather acute teeth. Hypanthium hirsute, and tomentu- 
lose, in fruit 7-10 mm. broad.  Bractlets lanceolate, acute, equalling the ovate-lanceolate acute sepals. 
Petals obovate, slightly emarginate, equalling the calyx. 
This closely resembles the preceding species, but differs in a more slender and simple stem and the 
grayish pubescence. The only specimens found on this continent that I have seen are those col- 
lected in Ontario by J. Fowler 1886 and 1895. 
23. Potentilla collina Wibel. 
Potentilla collina Wibel, Prim. F]. Werth. 2: 267. 1799. 
Lehm. Mon. 24 and 99; DC. Prod. 2: 577; Sprengel, Syst. Veg. 2: 537; Don, Gard. Dict. 2: 
554; Dietr. Syn. Pl. 3: 182; Walp. Ann. 2: 492; Lehm. Rev. Pot. 98’. 
_Rydb. Bull. Torr. Bot. Club, 24: 9: Britt. & Brown, Il. Fl. 2: 209. 
Stems many from the rootstock, spreading or ascending, weak, glabrous or tomentose. Stipules 
small, less than 5 mm. long, lanceolate, acuminate. Basal leaves many, on long petioles 1-14 dm. long, 
digitate with 5 leaflets, smooth or puberulent above, grayish-tomentose beneath. Leaflets broadly 
cuneate, 15-25 mm. long, deeply toothed above the middle with oblong-ovate obtuse teeth, and with 
flat, not revolute margins. The upper stem leaves are ternate with oblong few-toothed leaflets. 
Hypanthium grayish-tomentose, in fruit 5-7 mm. broad. Bractlets and sepals subequal, oblong, ob- 
tuse or acute. Petals obcordate, cuneate, emarginate, a little exceeding the calyx. 
This is another species that has been collected in this country at least twice, viz., by J. M. Holz- 
inger (No. 30) at Winona, Minn., in 1887, and by M. L. Fernald in Massachusetts, 1894. Tt differs 
from P. argentea, which it most closely resembles, by its prostrate or spreading habit, less white- 
tomentose leaves, which have broader lobes, and flat, not revolute margins. 
1The numerous synonyms of this species are omitted as they have no reference to North American botany. See Leh- 
mann, /. ec. 
2The synonyms and most references are omitted, as they have no bearing upon North American botany. 
