46 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
1849-49: Man. Wd. 1: 122. Wd. 2: 118. Ed) 52 154; Pac. RoR. Rep. 12-2 39, 
Cooper, ibid. 55; Noll, Fl. Pa. 483; Chapman, Fl. So. U. S. 124; Darby, Bot. So. States, 
803: Wood, Class Book 342; Bot. & Fl. 107; Wats, King’s Rep. 5: 85; Proe. Am. 
Acad. 8: 552: 1. c. 17: 353; Porter, U. S. Geol. Surv. 1870 : 475; 1871: 481; Coul- 
ter, ibid. 1872 : 765; Port. & Coult. Syn. Fl. Col. 36; Coult. Man. Rocky Mts. 83 ; Wats. 
& Coult. in Gray, Man. Ed. 6: 159; Bailey in Gray, F. F. & G. Bot. Rey. Ed. 151. 
Bongard, Veg. Ins. Sitcha, 132; Schlecht. Linnaea, 10:98; Ledeb. Fl. Ross. 2: 36; 
Provancher, Fl. Can. 188; Seem. Bot. Herald, 51. 
Potentilla rivalis Rothrock, U. 8. Geog. Surv. 4: 112, at least in part. 
Ittustrations: Nestl. Mon. Pot. pl. 9, f. 1; Britt. & Brown, Mehl 2922: 
Puate 10, f. 1; dissection of flower, f. 2; pistil, f. 3; stamen, f. 4; fruiting hypanthium 
and calyx, f. 3. 
Stems stout and very leafy, 3-8 dm. high, ascending or erect, often tinged with red or 
brown, often several from the annual or biennial root, branched above, hirsute with long 
and spreading hairs. Stipules broadly ovate, 1-4 em., generally toothed. Lower 
leaves with hirsute petioles 3-10 cm. long, the uppermost subsessile, more or less hirsute, 
all digitately 3-foliolate or, in luxuriant forms, the lower sometimes digitately or pinnately 
5-foliolate. Leaflets obovate, 3-10 cm. long, serrate (in the native form) with generally 
broad teeth. Cyme generally dense and leafy. Flowers on short pedicels, about 1 cm. 
in diameter. Cup hirsute, in fruit about 1 em. in diameter, and with the sepals of about 
the same length. Bracts and sepals oblong-lanceolate, acute, nearly of the same length. 
Petals light yellow, obovate, nearly equalling the sepals. Stamens generally 20, some- 
times only 15; anthers cordate, didymous. Pistils numerous ; style terminal, fusi- 
form and glandular below. Achenes often rugulose when ripe. 
This is the stoutest of the group. It differs from the related species with ternate 
leaves in the size of the petals and the fruiting hypanthium; the former about equal the 
sepals in length and the latter often becomes 1 em. in diameter. It is also more coarsely 
hirsute. It ranges from Labrador to the District of ¢ ‘olumbia westward across the con- 
tinent, and in the Rockies, south to Mexico. Also in eastern Asia. 
Potentilla Monspeliensis Norvegica (I.). 
Potentilla Norvegica L. Sp. Pl. 499. 1753. 
L: Sp. PL. Ed: 2: 715; Oeder, Fl. Dan. pl. 177; Willd. Sp. Pl. 2: 1109; Poir. in 
Lam. Enc. Meth. 5: 600; Ait. Hort. Kew. Ed. 2, 3: 279; Persoon, Syne eee z kobe 
Nestler, Mon. Pot. 29 and 66; Lehm. Mon. 29 and 153; Spreng. Syst. Veg. 2: 540; 
