PoTENTiLLA EFFUSA Dougl. ; LehtTi. Stirp. Pug. 2: 8. 1830. 



The pubescence is grayish or whitish tomentose, not at all 

 silky ; the branches are rather divergent and the bractlets much 

 smaller than the acuminate sepals. It grows on the dry plains 

 from New Mexico to Montana, Assiniboia and Minnesota (?). 



Poteiitilla cffusa gossypina Nutt.; Torr & Gray, Fl. N. Am, i ; 437. 

 1840, is still unknown. Dr. Hooker, in London Jour. Bot. 6: 219, 

 states that the plant collected by Geyer (no. 637) was labelled by 

 Nuttall P. gossypina. These specimens Dr. Hooker identified as 

 P. avacJinoidea Douglas, which is P. Peiuisylvamca araclmoidea 

 Lehm. 



PoTENTrLLA FILICAULIS (Nutt.). • 



Poteniilla cffusa filicaidis Nutt.; Torr. & Gray, Fl. N. Am. 1 : 

 437. 1840. 



This is known from only two fragmentary specimens, one, the 

 original of Nuttall, in the Torrey Herbarium at Columbia Univer- 

 sity, the other collected by Dr. J. M. Coulter, in 1872, near Fort 

 Hale, and preserved in Dr. Porter's private collection. The stem 

 is very slender, filiform. As the pubescence is somewhat silky, it 

 is probably more related to the following species :* 



PoTENTiLLA HipPiANA Lehm. Stirp. Pug. 2: 7. 1830. 



Poteiitilla leiicopJiylla Torr. Ann. Lye. Nat. Hist. N. Y. 2 : 197. 

 1827. Not Pallas. 



Poteiitilla leneophylla Eat. Man. Ed. 5, 344. 1829. 



The name used by Eaton seems to have been overlooked alto- 

 gether. It may be claimed that the name given was only a mis- 

 print for P. leneophylla, the original name, which, however, is ante- 

 dated by P. leneophylla Pallas, a synonym of P. nivea. The name 

 P. leneophylla, which means woolly-leaved, a very appropriate name, 

 is not only found in the fifth edition of Eaton's Manual, but>also 

 in the sixth and seventh editions and in Eaton & Wright's North 



* Since the above was written I have found a sheet of good specimens in a colt 

 lection from the Iowa Agricultural College at Ames. These specimens show tha- 

 the plant is more nearly related to P. Hippiatta than to P. effusa, having practically 

 the same pubescence and sepals as that species, but is much smaller. It has often 

 subdigitate leaves, and holds about the same relation to P. Hippiana as P. saxitnon- 

 tana and /'. mitmtifolia do to P. pulcherrima, and may better be referred to the 

 Subjugae group. 



