432 
leafless ; basal leaves on petioles 3-6 cm. long, digitately 5-foliolate, 
silky and greenish above, white-tomentose beneath; leaflets 4-2 
cm. long, oblong-cuneate, margins entire, except at the very apex, 
where there are 2 (seldom 4) notches making the leaflet 3- (sel- 
dom 5-) toothed at the apex, the middle tooth generally the small-. 
est; flowers about I cm. in diameter; calyx silky; bractlets and 
sepals ovate or lance-ovate, the former smaller; petals obovate, 
merely truncate. 
It much resembles the preceding, but is more delicate, not at 
all spreading, has a subscapiform stem and smaller flowers, but 
the most striking difference is the form of the leaflets. 
New Mexico: C. D. Walcott, no. 66, 1883 (Type). 
Colorado: E. L. Greene, 1875. 
The Multjugae is a group of Potentillas in many respects re- 
minding us of the Multifidae. The leaves in both are pinnate with 
several leaflets, but the pinnae in the present group are generally 
much more numerous; the pubescence is hirsute, strigose or silky, 
always without any indication of tomentum, and the style is al- 
ways long and filiform. To this group belong P. Richardii Lehm., © 
from Mexico, differing from P. Plattensis mainly in the spreading 
pubescence, and the following North American species: 
PorenTILLA Pratrensis Nutt.; Torr. & Gray, Fl. N. Am. 1+ 
: 439. 1840. 
The type specimens of Nuttall have light green leaves with 
4-8 pairs of oblong-cuneate leaflets, dissected into broadly oblong 
obtuse segments 14 cm. long, and a stem that is more or less aS 
cending. In the more common form, however, the segments are 
often 34 cm. long, nearly linear and often acute, the stem more 
or less spreading and the flower-clusters very irregular. It may 
be a good variety. 
All forms of P. Plattensis are characterized by the stipules, 
which are unusually large for the size of the plant. Its range !$ 
from Colorado and Utah to the Saskatchewan, but it belongs t? 
the valleys of the high plains rather than to the alpine regions. 
POTENTILLA PINNATISECTA (Wats.) Aven Nelson, Bull. Wy. Exp. 
St. 28: 104. 1896. : 
P. diversifolia pinnatisecta Wats. King’s Rep. 5: 87 (in part), = 
1871. 
