358 DESCRIPTIONS OF NEW SPECIES 



6. Coreopsis auriculata; Linn. 7. Coreopsis diversifolia; Decand., Vol. V., 

 p. 571. 



1 1 Leaves pseudopinnate. 



8. Coreopsis grandijlora; (Nutt. MSS. Sent by that name to Mr. Barclay.) 

 Hab. Banks and plains of the Arkansa. C. longipes; Hooker, Bot. Beech. 1. c. 



9. Coreopsis ^ heterophylla; %, smooth; stem erect, branching, grooved; 

 radical leaves entire, spathulate-oval or trifid ; stem leaves opposite, sessile, ci- 

 liate at base, biternately dissected, above three-parted; segments narrow linear, 

 entire; peduncles elongated, one-flowered; external sepals lanceolate, shorter 

 than the inner; rays unequally four-lobed; achenium suborbicular, winged, 



shortly toothed. 



Hab. With the preceding, to which it is intimately allied ; the flower smaller and the leaflets 

 narrower. Achenium, as in the preceding, with an ii^ternal tubercle at the summit and base 

 within. 



10. Coreopsis * Boyhiniana; %, smooth and erect, the summit trichotomous; 

 stem angular and grooved ; leaves opposite, entire, linear-lanceolate, long pe- 

 tiolate, acute, one or two upper cauline pair unequally trifid and petiolate; 

 peduncles one-flowered, very long; external sepals lanceolate, acute, about half 

 the length of the inner; rays four-lobed; achenium, even, with a broad wing, 

 shortly bidentate. 



Hab. Near Millidgeville, in Georgia; collected by my friend, Dr. Boykin, after whom I have 

 great pleasure in naming it. Achenium very similar to that of the two preceding, and internally 

 bituberculate with a broader winged margin. Flower large, rays eight. Involuorum enlarging 

 with the fruit; palese narrow and deciduous. A distinct species, though allied to the preceding. 



§ * Gyrophyllum. — Rays entire^ or slightly toothed. Acheniu7n oblong-com- 

 pressed, straight, winged, often rvith an obsolete, minute, chaffy crorvn, scarcely 

 bidentate rvhen mature. — Leaves trifid, 7nostly equal, and appearing verticil- 

 lated or stellate. 



11. Coreopsis senifolia; Michaux. 12. Coreopsis stellata; Nutt. in Journ, 

 Acad. Nat. Sci. Philad., Vol. VII., p. 76. 



13. Coreopsis rigida; Nutt. Gen. Am., Vol. II., p. 180. Smooth, or nearly 

 so; leaves equally trifid, or sometimes with the central segment also three-cleft; 

 leaflets lanceolate-linear, entire, scabrous on the margin; outer sepals of the 

 involucrum linear, about twelve! 



