XXX linNjKan synopsis of genera. 



Class XX. GYNANDRIA. 



313. Nat. Order 82. Orchidace^. Stam. 1 or 2. 

 288. Aristolochia. Stam. 6. Stigma with 6 lobes. 



Class XXI. MONCECIA. 

 Order I. MONANDRIA. 



[Stam. 1.] 



290. Euphorbia. Involucre bellshaped, inclosing many male 

 fl. and 1 female flower. Cor. and cal. wanting. 



348. Arum. Spath of 1 sheathing leaf, inclosing many fe- 

 male fl. and many male fl. above them. Cal. and cor. 

 wanting. 



293. Callitriche. Bracts 2 petal-like, or 0. Involucre, spath, 

 cal. and cor. wanting. 



.355. Zannichellia. Involucre 0. Male fl. without cal. or 

 cor. Fem. fl. with a perianth of 1 leaf. Nuts 4, stalked. 

 Stigma peltate. 



355. ZosTERA. Fl. aggregate in 2 rows on one side of a spadix. 



Spath ending in a leaf. 



356. Naias. Fl. solitary, sheathed. Perianth 0. 



Order II. DIANDRIA. 



{Callitriche, N. O. 73. Carex, N. O. 96.) 



Order III. TRIANDRIA. 



347. Typha. Spikes male and female, cylindrical. Ovary sur- 

 rounded with bristles. Perianth 0. 



347. Sparganium. Spikes male and female, globose. Perianth 

 single, 3-leaved. 



364. Carex. Fl. in 1 or more imbricated scaly spikes. Pe- 

 rianth 0. Perigone urn-shaped. 



364. KoBRESiA. Fl. in a compound spike. Perianth and 

 perigone 0. 



Order IV. TETRANDEIA. 



273. Littobella. Cor. of male fl. with a cylindi-ical tube and 



4-parted limb. Stam. very long. 

 290. Buxus. Cor. of male fl. of 2 petals, fem. of 3 pet. Caps. 



with 3 beaks. 



