68 % GENERA OF CLASS IV. TETRANDRIA. 



{barley) ...Triticum {wheat) ... Phalaius {canary -grass).,, Paspa- 



LUM... ROTTBOELLIA... PeROTIS... LeERSIA... PAPPOPHORUM...and 



Lappago. 



Order 3. Trigynia, comprehending such plants as have three 

 styles. This order contains twelve genera, viz. Eriocaulon... 

 Montia... Proserpinaca...Triplaris... Holosteum... Polycar- 



PON...M0LLUGO... MlNUARTIA QUERIA... LeCHEA... KcENIGIA 



...and Donatia. 



CHAP. VII. 



OF THE FOURTH CLASS, TETRANDRIA. 



THIS class consists of such plants as bear bisexual flowers, 

 furnished with four stamina. The flowers of this class may be 

 known from those of the fourteenth by this distinction, that the 

 stamina are of an equal length ; whereas in those of the fourteenth, 

 which have four stamina likewise, there are two long and two 

 short. The orders of this class are three, viz. 



Order I. Monogynia, comprehending such plants as have 

 but one style. This order contains ninety-four genera, distin- 

 guished into, 1. Flowers monopetalous, one-seeded, inferior, viz. 

 Globularia. 2. Flowers monopetalous, one-seeded, superior, aggre- 

 gate, as Dipsacus (fctfse/)...KNAUTiA...ScABiosA {scabious),,,. and 

 Allionia. 3. Flowers monopetalous, four -seeded, as Mattuschkea. 

 4. Flowers monopetalous, one-fruited, inferiw, asPYROSTRiA...MYO- 

 nima... Petitia...Aquartia... Roussea...Callicarpa...Wallo- 



NIA..,WlTHERINGIA.,.iEGIPHILA... CeFHALANTHUS... LaSIOSTOMA 



