CENT. Xllf. 



167 



hernia by Tratenick under this name, 1 have 

 seen no description; near last, differing by fo- 

 lioles narrower pectinate serrate, with adpress- 

 ed canescent hairs, almost silky on the flowers, 

 petals longer than calix and of a dirty yellow, t 



1220, Pot. hifurca L. O. — Sibiria, very rare 

 sp. of subg. Aplenta, petals almost cuneate. 



DASIPHORA Raf. differs from Potentilla 

 by receptacles villose or wooly, involving the 

 seeds in dense wool, and the seeds themselves 

 such instead of rugose. This striking character 

 deserves to be Generic here as in other Genera. 

 All the sp. were Potentilla of L. and Authors, 

 and many others belong here besides the follow- 

 ing, also the whole 3d section of W. Pers. &c. 



1227, Dasiphora riparia Raf. Pot. frutico- 

 sa L. — Boreal Europe, Sibiria, leaves pinnate, 

 3-5folioles lanceol. or cuneate, petals shorter, 

 seeds wooly. This and the 2 next are fruticose, 

 forming a subgenus Thamnila Raf. by calix 

 with 5 segments linear elongate, and 5 ovate 

 shorter. 



1228, Das, floribunda Raf. Pot, do Pursh 

 &c, fruticosa of many bot. — Boreal America, 

 Origon &:c, very distinct by leaves narrow, lin- 

 ear or oblong, petals equal to calix, seeds vil- 

 loc^e. 



1229, Das. speciosa Raf. P. do O— Creta, 

 fine rare sp. suffruticose, fl. congested, petals 

 white equal to calix, the 3 ovate segments 

 broad large, the narrow segments not loiiger. 



1230, Das. valderia Raf. P. do AUioni L, — 

 Alps of Italy, very rare, habit of D. speciosa, 

 calix as in D. riparia. 



1231, Das. nitida R. (Wulfen Pot,) Alps of 

 Tyrol, Carinthia, small uncial, with large fl. ca- 



