SYNGKNE3IA FRUSTRANEA. 



449 



1. BiCOLOR. 



Sp. pi. 3. p. 2245. Fursh, 2. p. 572. Nutt. 2. p. 175. 

 O. Lanceolala, Mich. 2. p. 142. 



^ Root perennial. Stem herbaceous, about two feet high, pubescent, spa- 

 ringly branched, with the branches twiggy and naked. Leaves ahernate, 

 sessile, linear-lanceolate, acute, pubescent, with a few serratures, fringed 

 the hairs of the fringe hooked. Flowers solitary, terminal. Involucrum 

 many leaved, leaves arranged in two series, the exterior (9) reflexed, the 

 interior (i2— 13) erect, all lanceolate, acute, pubescent. F/o/x'^^ of the 

 ray about eight, dilated at the summit, three-cleft, with the segments une- 

 qual, yellowj of the disk numerous, tubular, deeply five-cleft, the segments 

 hnear, glandular, at first yellowish, afterwards dark purple. Stanif'ns 

 shorter than the corolla. Anthers yellow. Stj/Ie of the ray 0: of the disk 

 longer than the stamens, two-cleft. Seeds slightly turbinate, clothed with 

 wmte hair. Pappus eight or nine leaved, leaves membranaceous, terminat- 

 ing in a long awn, whh the awn as long as the corolla. Receptacle conic, 

 glabrous? dotted. ^ r > 



The plant which I have described is certainly the G. Lanceolata of Mi- 

 chaux. I have doubts whether it is the G. Bicolor of Willdenow. 

 Grows m the dry pine barrens in the middle country of Georgia. 

 t lowers May — August. 



N 



RUDBECKIA. Gen. Pl. 1324. 



Involucrum 



* 



subae 



Involucrum 



doii 



ly 



quale, duplici ordine equal, scales i 

 squamarum. Pappus { ble series. Pappus mill 

 margine quadridentato. a 4-toothed 

 Jieceptaculum coni- Receptacle cor 



marein. 



chaf- 



cum, paleaceum. 



r 



* Involu cro imhrv 



% 



Involucrum 



im 



c«% paleis receptaculi bricate; chaff of the 



^ucronatis. I i^eceptacle mucrojiate. 



1. Purpurea. 



R. aspera; foliis in 



ftrioribus lato 

 ba 



Rough; lower leaves 



ovatis, I wide, ovate, taperin 



SI attenuatis, remote at base, reraotelv too^ 



VOL. n. 



l3 



