188 NATURAL ORDfiR OF PLANTS. 



CLASS VI. GYMNOGENS. 37 Genera ; 210 Species. 



Natural Orders. -73. Cycadeaceae, or Cycads. 74. Pinacese, or Conifers. 75. Taxaceae, 

 or Taxads. 76. Gnetaceae, or Joint Firs. 



CLASS VII. ExooEm-^6191 Genera; 66225 Species. 



ALLIANCES OF EXOGENS. 



SUB-CLASS I. DICLINOUS EXOGENS. 



Flowers $ Q, without any customary tendency to $ . 



.. Flowers in catkins, achlamydeous or monochlamydeous ; carpels superior ; embryo 

 small, with little or no albumen. 13 Gen. ; 358 Sp. 



Natural Orders.-*!!. Casuarinaceae, or Beefwoods. 78. Betulaceae, or Birchworts. 79. 

 Altingiacese, or Liquidambars. 80. Salicaceae, or VVillowworts. 81. Myricaceaa, or 

 Galeworts. 82. Elteagnaceae, or Oleasters. 



19. UaTiCALKS.-'Flowers scattered, monochlamydeous ; carpel single, superior ; embryo large, lying 



in a small quantity of albumen. 61 Gen. ; 572 Sp. 



Natural Orders. S3. Stilaginaceae, or Antidesmads. 84. Urticacese, or Nettleworts. 85. 

 Ceratophyllaceae, or Hornworts. 86. Caunabinacese, or Hempworts. 87. Moracese, or 

 Moraus. 88. Artocarpaceae, or Artocarpads. 89. Platanaceae, or Planes. 



20. EUPKORBIALES. Flowers scattered, monodichlamydeous ; carpels consolidated, superior ; pla- 



centae axile ; embryo surrounded by abundant albumen. (Albumen occasionally absent). 203 

 Gen. ; 2527 Sp. 



Natural Orders. SO. Euphorbiaceaa, or Spurgeworts. * Gyrostemoneae. 91. Scepaceae, 

 or Seep ids. 92. CallitrichaceoB, or Starworts. 93. Empetraceee, or Crowberries. * Batidese. 

 94. 1 NepenthaceaB, or Nepentha. 



21. QUERNALKS. Flowers in catkins, monochlamydeous; carpels inferior; embryo amygdaloid, 



without albumen. 12 Gen ; 292 Sp. 



Orders. 05. Corylaceae, or Mastworts. 96. Juglandacese, or Juglands. 



32. GARRYALES. Flowers monochlamydeous, sometimes amentaceous ; carpels inferior ; embryo 

 minute, in a large quantity of albumen. 3 Gen. ; 7 Sp. 



Natural Orders. -97. Garryaceae, or Garryads. 98. Helwingiaceae, or Helwingians. 



23. MENISPERMALES. Flowers monodichlamydeous ; carpels superior, disunited : embryo sur- 



rounded by abundant albumen. 39 Gen. ; 281 Sp. 



Natural Orders. 99. Monimiacege, or Monimiads. 100. Atherospermaceze, or Plume-Nut- 

 megs. 101. Myristicaceae, or Nutmegs. 102. Lardizabalacese, or Lardizabalads. 103. Schi- 

 zandracese, or Kadsurads. 104. Menispermaceae, or Menispermads. 



24. CXJCTRBITALES. Flowers monodichlamydeous ; carpels inferior ; placenta parietal ; embryo 



without albumen. 61 Gen. ; 433 Sp. 



Natural Orders. 105. Cucurbitacese, or Cucurbits. 106. Datiscacete, or Datiscads. 107. 

 Begomaceae, or Begoniads. 



Natural Orders. 108. Papayace ae, or Papayads. 109. Pangiacets, or Pangiads. 



