PLATE XXXII. 



1. HELIANTHUS MULTIFLORUS, 



PERENNIAL SUN-FLOWER. 



THIS genus contains plants of the hardy herbaceous flower j 

 kinds. 



It belongs to the class and order Syngenesia Polygamia Frustranea, 

 and ranks in the natural order of Composita Oppositifolite. 



The characters are: that the calyx is common imbricate, some- 

 what squarrose, expanded; scales oblong, broadish at the base, 

 gaping every where at the tips: the corolla compound radiate: co- 

 rollets hermaphrodite, very numerous in the disk: females fewer, 

 much longer in the ray: proper of the hermaphrodites cylindric, 

 shorter than the common calyx, bellying at the base, orbicular, de- 

 pressed : border five-toothed, sharp, spreading : of the females ligular, 

 lanceolate, quite entire, very long: the stamina in the hermaphro- 

 dites consist of five filaments, curved, inserted below the belly of 

 the coroilet, the length of the tube: anther cylindric, tubular: the 

 pislillum in the hermaphrodites is an oblong germ: style filiform, 

 length of the coroilet: stigma two-parted, reflex: in the females, 

 germ very small: style and stigma none: there is no pericarpium: 

 unchanged calyx: seeds in the hermaphrodites solitary, oblong, 

 blunt, four-cornered, compressed at the opposite angles; the inner 

 ones narrower, crowned with two lanceolate, acute deciduous chaffs; 

 in the females none: the receptacle chaffy, large, flat: chaffs lanceo- 

 late, aculc, two separating each seed, deciduous. 



The species cultivated are: 1. H. animus, Annual Sun-flower; 

 2. H. indicus, Dwarf Annual Sun-flower; 3. H. multiflorus, Perennial 

 Sun-flower ; 4. //. titberosus, Tuberous-rooted Sun-flower, or Jeru- 

 salem Artichoke. 



