PLATE XXXII. 



1. HELIANTHUS MULTIFLORUS. 



PERENNIAL SUN-FLOWER. 



This genus contains plants of the hardy herbaceous flowery 



kinds. 



It belongs to the class and order Si/ngenesia Pohjgamia Frustranea^ 

 and ranks in the natural order of Compositm Oppositifolia. 



'J'he characters are: that the calyx is common imbricate, some- 

 ■\\hat squarrosc, expanded; scales oblong, broadish at the base, 

 gaping every ^vhere at the lips: the corolla compound radiate: co- 

 roUets 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-toolhed, 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 cyhndric, tubular: the 

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

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

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

 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 chafiy, large, flat: chaffs lanceo- 

 late, acute, two separating each seed, deciduous. 



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

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

 Sun-flower; 4. //. tubcrosus, 'J'ubcrous-rooted Sun-flower, or Jeru- 

 salem Artichoke. 



