GENERA OF CLASS IV. TETRANDRIA. 



...Scoparia... Centunculus... Plantago... Polyprenum... Bud- 

 leia...Exacum... Myrmecia... Labatia... PENiEA...and Rl^eria. 

 5. Flowers monopetalous, one-fruited, superior, as Chomelia... 

 Cunninghamia...Scolosanthus...Pavetta... Ixora... Petesia... 



CATESBCEA. . .FllCELICHIA. . .HOFFMANNIA. . . ErNODEA . . .SlDERODEN- 



drum...Coccocypsilum... Mitchell a... Hedyotis...Oldenlandia 

 ...Hydrophylax... Manettia....Carphalea...Bellardia... San- 

 guisorba [great bur net). 6. Flowers monopetalous, dicoccous, in- 

 ferior ; Houstonia. 7. Flowers monopetalous, dicoccous, superior, 

 stellate; Rubta [madder)... Galium (M-s£ratt>)...AspERULA...SHE- 

 rardia... Spermacoge... Knoxia... Diodia... Crucianella. 8. 

 Flowers monopetalous, tetracoccous, inferior; Siphonanthus. 9. 

 Flowers four-petalled, viz. Epimedium ... Cornijs ... Fagara... 

 Amannia...Ptelea... Ludwigia... Santalum...Trapa... Samara 

 Blackburnia... Skimmia... Monetia... Hartogia... Curtisia... 

 OTHERA...ORixA...Cissus...and Glossoma. 10. Flowers incom- 

 plete, viz. Dorstenia... El^eagnus... Krameria... Rivina...Sal- 

 vadora...Camphorosma...Alchemilla... Struthiola...Cometes 

 ...Opergljlaria...Pr6tea... Rupala... Banksia... Embotrium.c. 



PoTHOS, GoNATOCARPUS, iVcCENA, IsNARDIA. 



Order 2. Digynia, comprehending such plants as have tivo 

 styles. This order contains seven genera, viz. Cruzita, Buf- 

 fonia, Hamamelis, Cuscuta, Hypecoum, Galopina, and 

 Nerteria. 



Order 3. Trigynia, has one genus only; Boscia. 



Order 4. Tetragynia, comprehending such plants as have 

 four styles. This order contains seven genera, viz. Ilex [holly) 

 ...Coldenia... Potamogeton . . . Ruppia. . . Sagina... Myginda... 

 and TiLLiEA, 



