Subclass IV. — Monochlamy deals. 



Flowers with a single perianth, or whose calyx and corolla form only 

 one envelopb. 



Order 100. Araaranthaceae, 



101. -Chenopodiacese, 



102. Phytolaccaceae, 



103. Polygonace«, 



104. Lauraceae, 



105. Elaeagnaceffi, 



106. Thymelaceae, 



107. Santalaceae, 



108. Aristolochiaceae, 



109. Empetraceae, 



110. Euphorbiaceas 



111. Urtlcaceae, 



295 Order 112. Cannabinaceae, 



316 

 317 

 318 

 318 

 323 

 324 

 326 

 333 

 333 

 334 

 335 

 337 



CLASS II.— ENDOGENOUS oa MONOCOTYLEDONOUS PLANTS. 



Subclass I. — Petaloidenls. 

 Stamens and pistils naked, or covered by verticillate floral envelopes. 



