3u Coreopsis tinctovia. 



ultimate divisions largest. Flowers often terminating the hranehlets by 

 pairs, with the peduncles unusually short. Exterior calix minute. 

 much shorter than the interior, and in common with it, and the num- 

 ber of rays mostly eight-leaved. Rays three-lobed at the extremity, of 

 a bright orpiment-yellow* and brownf towards the base ; disk brown,} 

 and rather small. Receptacle paleaceous, the leaflets deciduous. Seed 

 small, blackish, immarginate, curved, and naked at the summit." 



« Habitat Throughout the Arkansa territory to the banks of the Red 

 river, chiefly in the prairies which are subjected to temporary inunda- 

 tion. Flowering from June to October."^ 



We are indebted to Mr. Nuttall for the addition to our Flora, of this 

 very elegant species of Coreopsis. It is one of that number of new 

 and rare plants, the discovery of which rewarded the zeal of that bota- 

 nist in his last travels through the Arkansa territory. His full descrip- 

 tion, as quoted above, renders any other unnecessary. 



Figure 1. Represents a flowering portion, of its natural size. Culture 

 much improves the flowers in size. 



2. A radical leaf. 



3. A floret, magnified. 



4. The calix, its natural size. 



* Gamboge-yellow. f Auricula-purple. \ Auricula-purple. 



§ Journal Acad. Nat. Sc. Phil. 1821. p. 114. 



