MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 111 
IntustRATIONS; Lehm. Rev. Pot. pl. 7. Puare 48, f. 1-2; dissection of flower, f. 3; 
stamen, f. 4; pistil, f 5; fruiting hypanthium and calyx, f. 6. 
Stem erect, 3-7 dm. high, slightly silky-strigose, more or less leafy. Stipules large, 
1-2 cm. long, ovate, entire. Basal leaves numerous, often 2-5 dm. long, slightly hairy 
or glabrate, pinnate with 6-15 pairs of obovate cuneate leaflets 1-4 em. long, which are 
coarsely toothed above the middle. Stem leaves smaller and with fewer leaflets. Cyme 
narrow with rather slender pedicels. Flowers about 15 mm. in diameter. Hypanthium 
slightly silky, in fruit about 1 cm. in diameter; bractlets oblong, about one-third 
shorter than the ovate sepals. Petals broadly obcordate, about one-third longer than 
the sepals. Stamens about 20. Pistils about 30; style nearly terminal, filiform, about 
twice as long as the achene. 
This species has been lost for about 40 years. As in the collections of this country 
there were no specimens of a Potentilla whose leaves resembled those of Lehmann’s plate, 
and as those of the latter resembled the leaves of Horkelia cuneata, most botanists have 
cited P. multijuga as a synonym of that species, and Professor Greene, in Flora Fran- 
ciscana, has even adopted the name. It is not very likely that such an acute observer 
and eminent botanist as Dr. Lehmann would have figured a Horkelia with true Potentilla 
flowers. In two collections, viz., those of the National Herbarium and the herbarium of 
Harvard University, I have found a Potenti/la that answers Lehmann’s description and 
plate, except that the plant is more robust and the leaflets are larger, and more irregu- 
lar in form and position. 
California: Dr. H. E. Hasse, 1890 (Los Angeles). 
P. multijuga much resembles P. Plattensis, but the leaflets are more numerous, 6-13 
pairs, obovate-cuneate and toothed only toward the apex, and the sepals broader, ovate 
and abruptly contracted at the apex. The leaflets in Lehmann’s figure are about 2 em. 
long; some in Dr. Hasse’s specimens are nearly 5em. Lehmann’s figure illustrates an 
undeveloped specimen about 2.5 dm. high. Some of the better developed specimens are 
7.5 dm. high, with leaves 3 dm. long. 
§19. ARENICOLAE, 
98. Potentilla Newberryi Gray. 
Ivesia gracilis Torr. & Gray in Newberry, Pac. R. R. Rep. 6: part 3, 72. 1857. 
Brewer & Wats. Bot. Cal. 1: 184. 
Potentilla Newberryi Gray, Proc. Am. Acad. 6: 552. 1865. 
Greene, Pittonia, 1: 105. 
InLustRATIons: Pac. R. R. Rep. 6: pl. 11. Puare 49, f. 1-2; dissection of flower, f. 
3; pistil, f. 4; stamens, f. 5; fruiting hypanthium and calyx, f. 6. 
