170 AtT. BO T. 



Potentilla comarum Dec^ Europe and Sibiria. 

 This G. differs frojn Potentilla by a largespon- 

 giose gynophore andpetalsacuminate. Pancovia 

 of Heister and Adanson would be the best 

 naiTfe unrless Arum becomes again ArisarurA 

 cs in Tournefort ; but W. has a Pancovia. 



1246, Com. tomentosa Raf. var. villosnm 

 Pers. more robust than last,with broader Teaves 

 obl. elltpt. tomentose beneath — North Europe 



1247, Com. digitutum Raf fl. tel. 199— bo- 

 real America tb New York, blended with last 

 by our botanists. very distinct by leaves obl or 

 lanceol. smooth, large flowers <Slc. 



1248, Com. angustifolium R. fl. tel. 200, 

 Origon and Boreal America, Ohio: very pecu- 

 liar, leaves narrow smooth, fl. small &c. 



1249, Yar. parvifolium Raf. folioles .5-7smaH 

 smooth cuneate or elliptic, peliols membrjinose, 

 flow^rs very small, branches imiflore ; Labra- 

 dor, 3 to 10 inches high, folioles less than un- 

 cial. 



1250, Dryas intcgrifolia Vahl. tenella 

 Pursh — Canada, Labrador, Norway. Loaves 

 ovatobl. acutc, base cordate, margin revolute. 



1251, Dryas crenata Raf. Spetala O. — AIps, 

 Canadaf leaves subcordate elliptic obt, crenate 

 lobate or crenate serrate : both sp. have 8 pe- 

 tals. 



1252, ArxHEMiLLA alpina O — AIps^ Canada, 

 Mts. of New England. 



1253, Alch. vulgaris O — Labrador,Europe. 



1254, Alch.puhescensWdim. hybrida of others 

 Europe. 



1255, Aphanes arvensis L.^lchera. Apha- 

 nes Lam. Europe. 



1256, PoTERiuM angustifolium Raf. caule 

 sulcato foHoso, stipulis cristatis, foliolifi 5^9 lin- 



