SYNOPSIS OF GENERA. 

 OCTANDRIA. 



POLYGALA. CaL 5-leaved, 2" of tliem wing-shaped and coloured 

 Caps, compressed, obovate or obcordate, 2-celled, 2-valved. Seeds pu- 

 bescent. Polygafae, p. 44. 



DECANDRIA,. 



OBS. The genera of this order, with a few usually arranged under 

 the class Decaudria, constitute the Leguminosa, p. 76. 



SYNGENESIA. 



OBS. 'The plants of this class, with a few exceptions, have 5 anthers 

 united into a single tube. They are further characterized by the flowers, 

 commonly called florets, being clustered together in heads and insert- 

 ed upon a common receptacle which is surrounded by an involucre ; 

 being usually known as compound flowers. They form the Natural 

 Order Composite, p. 165. 



GYNANDRIA. 



OBS. The orders Monandria and Diandria of this class, constitute 

 the Orchidea:, p. 342. 



HEXANDRIA. 



ARISTOLOCHIA. Perianth tubular, ventricose at base, dilated at the 

 apex and ligulate. Caps, inferior, 6-celled, many seeded. Aristolo- 

 chia, p. 308. 



DODECANDRIA. 



ASARUM. Perianth campanulate, 3-cleft. Anth. adnate to the mid- 

 dle of the filaments. Caps, inferior, 6-celled. Aristolochia, p. 309. 



MONOECIA. 



MONANDRIA. 



ZOSTERA. Stam. and Pist. separated, in two rows on one side of a 

 spadix. Spathe leafy. Perianth none. STERILE FL. Anth. ovate ses- 

 sile, alternating with the germs. FERTILE FL. Ooaryl, ovate. Style. 

 bind. Drupe 1-seeded. Flutialt*. p. 384. 



ZANNICHELLIA. STERILE FL. Perianth none. FERTILE FL. Perianth 

 single, 1-leaved. Style 1. Stig. peltate. Caps, sessile. FktciaUf. 

 p. 384. 



CAULINIA. Perianth none. STERILE FL. Anth. sessile. FERTILE FL_ 

 Style aliform. Stig. 2-cleft. Caps. 1-seeded. Fluciales, p. 384. 



EUPHORBIA. Perianth mostly wanting, Invol. 1-leaved, campanu- 

 late, 8 to 10 toothed, the inner segments membranaceous and erect. 

 STERILE FL. 12 or more. Fit. articulated in the middle. FERTILE FL. 

 solitary, stipulate, naked. Cap*. 3-lobed. Euphorbiacece, p. 311. 



DIANDRIA. 



PODOSTEMUM. Cal. and Cor. none. STERILE FL. Stam. 2, affixed to 

 a common pedicel. FERTILE FL. Germ ovate. SHg. 1, sessile. Cap$. 

 2-celled, 2-valved, many-seeded. Scedt minute. Podostemect, p. 124. 



TRIANDRIA. 



SPARGANIUM. Fl. in spherical heads. Perianth 3-leaved. Drupe 

 dry, 1-seeded. Typhacea, p. 379. 

 CAREX. Fl. collected into an imbricated ament. Glume 1-flowered. 



