SYNGENE3IA. FRUSTRAXEA. 181 



Uie southei'ii hemispljere as far as Peru, with the excep- 

 tion of 2 species of doubtful genus said to be indigenous 

 to Canton in China. 



593. ^ACTINOMERIS.f 



Calix simple, many-leaved, foliaceous, sabe- 

 qua). Raifs remote, elongated, (4 to 8). Re- 

 ceptacle small and paleaceous, the leaflets em- 

 bracing the margin of the seed. Seed compres- 

 sed and marginated, with the summit persis- 

 tently S-awned. 



Tall and herbaceous plants, with entire, decurrent and 

 alternate scabrous leaves; flowers corymbose, rays yellow, 

 3 or 4 times the length of the calix. — Discal florets like 

 those of Helianthiif, and Verhesinci, partly ventricosc, witl\ 

 a short distinct and narrow tube; stigmas also similarly 

 S'ibulate. Seeds transversely embraced by the leaflets of 

 the receptacle. \ genus apparently intermediate with 

 VerbeMna and HeUanthis^ but without any shadow of affi- 

 nity to Coreopsis. The calix and rays remove W from Ver. 

 besina,- from HeUanthus, notwithstanding an approximation 

 in some measure by the calix and discal florets, it is easi- 

 ly distinguished by the flat and marginated seed, furnish- 

 ed with transverse sutures and persistent awns. 



Species. 1. A. * squarvosa. Leaves broad lanceolate*, 

 serrate; corymb panicuiated; calix spreading, loose; disk 

 subglobose, in fruit squarrose. Coreopsis aUernifoUa, L. 

 ^. procera? C procerat Alton, y.alba. Flowers white, 

 without rays. Is it of this genus? 



2. Helianthoides. Leaves lanceolate, acute, serrate, un- 

 der side canescently villous; corymb simple, coarctate. 

 Hab. \w the open forests of Ohio, Kentucky, Tennessee 

 and Lower Louisiana. — Stem distinctly alated as in the 

 preceding; leaves attenuated above; flowers few and larg- 

 er, from 4 or 5, probably to 10 or 1 1; rays about 8, (in the 

 preceding 3 and 4), golden-yellow; calix foliaceous, much 

 like that of //e<'/u7if/j?/.?, but nearly a simple series of seg- 

 ments; leaflets linear-lanceolate, partly spreading, seed 

 persistently blsetose, flat. 3. alata. Coreopsis alata. Ph. 

 2. p. 5G7. but in this the leaves are opposite. 



To this genus appears to belong Coreop. s alata and C. 

 ovata of Mexico. 



f From £«xr/i», a ray, and f*-'^'*? a part; the iiowcr being 

 imperfectly radiated. 



VOL. II. «t 



