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PorENTILLA MonspeE.iensis L. Sp. Pl. 499. 1753. 
P. Norwegica L. Sp. Pl. 499. 175 3. 
P. hirsuta Michx. Fl. Bor. Am. 1: 303. 1803. 
P. Norvegica and P. Norvegica jursuta Am. auth. 
This is the stoutest of the group. It differs from the related 
species with ternate leaves in the size of the petals and the fruit- 
ing calyx. The former about equal the sepals in length and the 
latter often becomes I cm. in diameter. It is also more coarsely 
hirsute. It extends from Labrador to the District of Columbia 
westward across the continent. 
The European form has generally a finer pubescence and ob- 
long rather than obovate leaflets. It is occasionally met with in 
the East. 
Potentilla Labradorica Lehmann, Ind. Sem. Hort. Bot. Hamb. 
1849, Add. 12, has generally been included in P. Monspeliensis. 
‘From Lehmann’s description it seems quite distinct, differing in 
being very low, 1—3-flowered, nearly glabrous, with leaves resem- 
bling those of P. zana, large stipules and larger flowers. I have 
not seen specimens. 
POTENTILLA PENTANDRA Engelm; Torr. & Gray, Fl. N. Am. 1: 
447. 1838. 
P. pentandra is characterized by its leaves, which are digitately 
5-foliolate or 3-foliolate, with the lateral leaflets cleft to near the 
base, by the exceeding numerous small flowers in a somewhat flat- 
topped cyme, by exceedingly small petals and generally only five 
stamens. It is often as stout as P. Monspeliensis and more bushy. 
Its range is from Missouri and Iowa to North Dakota and 
Arkansas. 
The group JZultifidae are perennials and have pinnate leaves 
with 2-7 pairs of deeply incised or pinnatifid leaflets, which are 
more or less white-tomentose beneath and greener above. All 
American species have a short terminal style, which in all except — 
P. pinnatfida is thickened and glandular near the base. All ex- 4 
cept P. Pennsylvanica are spreading or ascending, with several 
stems from the perennial root. 
