NEOPHYTON. 67 



culiar having the calix of Panctenis, but sta- 

 mens unlike all. 



300. DASISTEMA AURICITLATA Raf. quite vil- 

 lose, stein 4gone ramose, leaves petiolate broad- 

 Jy lanceolate, the lower auriculate at base, me- 

 dial truncate at base, upper acute at base, all 

 crenate serrate subobtuse, bracts sessile ova* 

 loblong, flowers subsessile, calix crenate on 

 the banks of R. Ohio in West Kentucky and 

 Illinois, estival, fine plant 3 or 4 feet high, 

 leaves 2 to 4 inches long, flowers large golden 

 yellow. 



391. DASISTEMA MACKOPHYLLA Raf. Seyme- 

 ria do Nuttal <$>c Erinus pinnatif ? Mg. stem 

 ramose, leaves nearly smooth subsessile, lower 

 elongate pinnatifid or sinuate, upper lanceolate 

 entire, flowers subsessile, segments of calix en- 

 tire ovate found by Nuttal in Ohio, I have his 

 specimen in Collins herb, whereby I have as- 

 certained what I already surmised, that it is 

 really a sp. of this Genus and not Seymeria, 

 Nuttal says the stamens are smooth, but involv- 

 ed in the wool of the base, he meant the an- 

 thers, the filaments being also wooly. Tall 

 plant, leaves 3 to 6 inches long, flowers yellow. 



392. SEYMERIA Pursh. ArzELiAGm. not 

 Smith. Calix camp, deeply 5fid. subequal. co- 

 rolla rotate campanulate deeply Slobed, lobes 

 subeqnal, stamens 4 very short subequal quite 

 smooth, except at insertion subsessile deflexed 

 anthers oblong smooth emarginate, incumbent, 

 two equal cells opening by ovate terminal pores. 

 Style filiform declined, stigma obtuse. Capsule 

 bivalve ovate 21oc. polysperm, seeds minute. 

 Annuals, leaves opp. and alt. small divided, 



flowers axillary yellow a very distinct Genus 

 mistaken by Nuttal who gave the character out 



