110 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
Don, Gard. Dict. 2: 558: Dietr. Syn. Pl. 3: 187; Walp. Rep. 2: 32; Ann. 2: 481; 
Lehm. Rev. Pot. 66. 
Hook. Fl. Bor. Am. 1: 189; Rydb. Bull. Torr. Bot. Club, 28: 43 
Potentilla dissecta Wats. Proc. Am. Acad. 8: 550 (in part); Macoun, Cat. Can. PI. 
138 and 517 (in part). 
Potentilla diversifolia Gray, Proc. Am. Acad. 8: 381. 
Inuustrations: Hook. Fl. Bor. Am. ‘pl. 65. Puate 47, f. 1; dissection of flower, f. 
2; pistil, f 3; stamen, f. 4; fruiting hypanthium and calyx, f. 5. 
Stem erect, 3-6 dm. high, shghtly hairy, few-leaved, branched above. Stipules 
about 2 em., ovate, lanceolate, acuminate, veined, subentire. Basal leaves with petioles 
5-10 cm. long, slightly strigose, hairy, especially when young; leaflets 2-5 pairs, some- 
what crowded, often verticillate and the upper confluent, veined, 2-6 em. long, obovate- 
cuneate, deeply and sharply toothed with linear-oblong or lanceolate acute teeth. Stem 
leaves 1—5-foliolate, short-petioled or subsessile. Flowers long-pedicelled. Hypanthium 
hirsute, veined ; bractlets lanceolate, shorter than the ovate-lanceolate acuminate sepals. 
Petals 6-10 mim., obcordate, longer than the sepals. Stamens about 20. 
Watson included this in P. dissecta. As he had only comparatively poor specimens, 
with few, more approximate leaflets, it was not strange that he did so, especially with his 
tendency to unite forms somewhat related. Had he seen such specimens as those col- 
lected by Suksdorf, or the one from which Lehmann’s figure was drawn, I doubt if he had 
so referred it. Such well-developed specimens have pinnate leaves of 3-5 rather distant 
pairs of leaflets, very large stipules resembling those of P. Plattensis and a large hypan- 
thium which is strongly hirsute. From P. Plattensis and the other species of the group 
it differs in the stoutness of the plant, and by the fewer (2-5 pairs) and larger leaflets, 
which are from 3 to 6 cm. long, and the acute teeth. It isa rare species. The only 
specimens seen are the following: 
Washington: W.N. Suksdorf, No. 539, 1875; 1885; Nos. 741 and 2487, 1896. 
Oregon: Elihu Hall, No. 135, 1871. 
Califorma: J. G. Lemmon, No. 1200, 1875. 
British Columbia: John Macoun, No. 32, 1890. 
Rocky Mountains of British America: FE. Bourgeau, 1858. 
97. Potentilla multijuga Lehi. 
Potentilla multijuga Lehm. Ind. Sem. Hort. Bot. Handb. 1849: 6. 1849. 
Lehm. Stirp. Pug. 9: 2; Rev. Pot. 29; Walp. Ann. 2: 472; Rydb. Bull. Torr. Bot. 
Club, 23: 434. 
