1412 



POTENTlLLA* miss^rica. 

 Missouri Cinqucfoil. 



ICOSANDRIA POLYGYNIA. 



Nat. ord. RosACEiE Jussieu. (Introduction to the natural system of 

 Botany, p. 81.) 



POTENTlLLA.— Suprd, vol. \Q>. fol. 1379. 



Sect. Foliis pinnatis. 

 P. missourica ; caule erecto stricto, foliis pinnatis sub-3-juiris supra incano- 

 sericcis subtus niveo-lanatis, tbliolis obloniris pinnatiHdis : laciniis lanceo- 

 lato-liuearibus acutis, stij)ulis foHaceis incisis, foliis supcrioribus siib- 

 integris, bracteis foliaceis, floribus corymbosis, caiycibus lanatis petalis 

 emarginatis lonirioribus. 

 P. missourica. " Hornemann." 

 P. arguta. Spreng. sp. pi. 2. 534. non Purshii. 



Herbaperennis. Folia pinnata, 2-3-juga, radicalia, pinnatifida: laciniis 

 lineari-oblongis acutis subfulcatis, supra incana, subtus niveo-lanata. Caulis 

 crcctus, pedalis, incanus, subdichotomus, foliis ad dichotomias iuferiores suh- 

 simplicibus : stipulis laciniatis, ad superiores subintegris. Flores in axillis 

 dichotoviiarum solitarii, et in corynibis terminalibus. Calycis sericeo-lanati 

 lacinicE ovatce, acutcB, integrce. Petala parva, lutea, emarginata, calyce 

 minora. 



This is no doubt one of the plants confounded with 

 P. arguta of Pursh, from which it is nevertheless extremely 

 different. For the knowledge that it is the P. missourica 

 of Hornemann, we are indebted to Professor Lehonann, 

 who pointed it out to us during his visit to England last 

 year. 



It is nearly related to P. pectinata of Fischer, which is 

 wrongly referred to P. pennsylvanica, as a synonym, in 

 M. De Candolle's Prodromiis. From that species it is 

 known not only by its hoariness, but also by the nakedness 



* Sue fol. 1379. 



