27. 



HELIANTHUS ATRORUBENS. 



Shagreen-leaved Sunflower. 



Syngenesta. Polygamia Frustranea. 



Class 19. Orders. 



Helianthus : from 'HA105, tlic Sun, and ccv^os, ajluwer. 



Linn. gen. 71.979. Linn. spec. 1279. Ilort. Kew. 5. 129. 



GENERIC CHAB.\CTER. 



Cal. common, imbricate, somewhat squarrose, expanded ; scales ob- 

 long, broadish at the base. Cor. compound radiate j corollets her- 

 maphrodite, very numerous in the disk : females fewer, much 

 longer in the rav. Stam. in the hermaphrodites : filaments five, 

 curved, inserted below the belly of the corollet, the length of the 

 tube. Anther cylindric, tubular. Pisf. in the hermaphrodites : 

 germ oblong 3 style filiform, length of the corollet 5 stigma two- 

 parted, reflex : in the females, germ very small ; style and stigma 

 none. Per. none. Calyx unchanged. Seeds in the hermaphro- 

 dites solitary, oblong, blunt, four-cornered, compressed at the op- 

 posite angles ; the inner ones narrower, crowned with two lan- 

 ceolate, acute, deciduous chaffs : in the females none, Rccept. 

 chaffy, large, flat ; chaffs lanceolate, acute, two separating each 

 seed, deciduous. 



SPECIFIC CIIAUACTER. 



Leaves opposite, spatulate, crenate, triple-nerved, scabrous ; calycine 

 scales erect, the length of the disk. 



Steim from two to three feet in height, round, dusky, pin-ple, 

 rough, with numerous small hairs. Root-leaves Hat, hairy. 



