*. 
$10 ICOSANDRIA. POLYGYNIA. 
forum. Pu. Ons. Stem mostly 3-flowered, Se es 
- about 2 pair of small leaves, which are connate at the base, 
haying diyaricate and. adnate stipules; peduncies 
elongated, bracteolatescalix subcampan ulate, smatier seg- 
meats longest, petals white, subovate; awns of the seed 
_ straight, conspicuously villous, twice as long as the calix. 
_ Hag. Around Fort Mandan on the Missouri. A remark- 
able species, allied to.G. Anemonoides, but having pilose 
leaves and a villous stem and calix. 
A North American gonees of which there are also 6 spe- 
+ cies in Europe, 1 in Japan, 1 in Barbary, 2 at the Straits of 
“Magellan, and 2 equally indigenous to Kamtschatka) and 
North America. — 
349 9. POTENTILLA. E. (Cinquefoil.) 
Calix 10-cleft, inferior, spreading, 5 of the 
nents alternately smaller. Pctals 5, Seeds 
_ mostly rug gose, roundish, naked, attached toa 
‘small juiceless receptacle. 
A numerous genus of herbaceous plants (only 2 species 
shrubby,) with pinnate, digitate or ternately divided 
aves: | petioles alated towards the base by the adnate sti- 
pules; flowers often corymbosely fasciculated and termi- 
nal, yellow, rarely white. 
_ Species. 1. P. tridentata. 2. emarginata. Pu. 3. ni- 
wea. 4. villosa. Pallas. 5. hirsuta, 6. norwegica. 
~ 
7, reetu? Leaves all in sevens, digitate, villous beneath; 
; cuneate-oblong, semipinnatifid, obtuse; stipules” 
suborat; stem erect, many-flowered, panicle aeons: 
: ro * Has. n 
opr ua . ains of the Missouri near 
For Mandan. ag Bt in Mayor June. 8. pumila. 9. 
\  eanadensis. 10. simplex. 11. opaca. 12. dissecta, 13. ar- 
gentea. From Canada to the state of New-York. 
14, * humifusa. Leaves digitate, quinate, leaflets cune- 
-oblong, obtuse, incjscly dentate, beneath white and to- 
4 flo see oe cia ae procumbent, pot 
_creepil AB. On high gravelly bills near Fort Man- 
dan, Mou “Flowering” weet Ail or May. Ons. 
be : hot creeping; leaves al all Hedicnl) deep 
it above, white a tomentose beneath; 
‘to the northern — of Europe, America, and 
ca 
of near 60 species, SS oe indige- 
Pepe eer eo ene 
