LINNBAir SYNOPSIS OE GENERA. xlvii 



Class XX. GYNANDRIA. 



332. Nat. Order 83. Obchidacbje. Stam. 1 or 2. 

 306. AaiSTOLOcpiA. Stam. 6. Stigma with 6 lobea. 



Class XXI. MONCECIA. 



Order I. MONANDEIA, 



[Stam. 1.] 



307. EuTHonBiA. Involuore bellsliaped, enclosing many male 

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



369. Ahum. Spath. of 1 sheathing leaf, enclosing many female 

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



369. Lbmna. Spath enclosing 2 flowers. Cal. and cor. want- 

 ing. — Floating minute plants, rarely flowering. 



311. Oalliteiche. Bracts 2 petal-like, or 0. Involucre, spath, 

 cal. and cor. wanting. 



377. Zajstnichellia. Involucre 0. Male fl. without cal. or 

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

 Stigma peltate. 



377. ZosTEBA. Fl. aggregate, in 2 rows on one side of a spadix. 



Spath ending in a leaf. 



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



Order II. DIANDRIA. 

 {Callitriche, N. 0. 74. Carex, N. 0. 97.) 



Order HI. TEIAISTDEIA. 



367. Typha. Spikes male and female, cylindrical. Ovaiy sur- 

 rounded with bristles. Perianth 0. 



367. Spakganium. Spikes male and female, globose. Perianth 

 single, 3-leaved. 



386. Cabbx. Fl. in 1 or more spikes with imbricate scales. 

 Male perianth 0. Female perianth umshaped. 



386. KoBBESiA. Fl. in a compound spike. Perianth 0. 



Order IV. TETEANDEIA. 



290. LiTTOEBLLA. Cor. of male fl. with a cylindrical tube and 



4-parted limb. Stam. very long. 

 307. Buxtjs. Cor. of male fl. of 2 petals, fem. of 3 pet. Caps. 



with 3 beaks. 



