8TRUGTUBAL BOTANY. 17 



aceoBi 92. Buckwheats, or Sorrelijoorts, PolygonaeecB ; 

 93. Laurels, Lauraceae ; 94. Daphnads, Thymelacem; 

 95. Oleasters, EloEagnacem ; 96. Sandalworts, SantalacoB ; 

 97. Zorcmths, or Mistletoes, Lormiihacem / 98. Saururads, 

 or Lizards^ -tails, Saurwacece ; 99. Hornworts, Cerato- 

 phyllacecB ; 100. Bvverweeds, Podostemacem ; 101. PTafe;-- 

 starworts, CallitrichacecB ; 102. Bpurgeworts, Euphorbia- 

 cem ,' 103. Ckowberries, EvvpetraceoB ; 104. NettleiwoTts, 

 UrticaceoB ( Ulmaeem, Artoea/rpacece, and JJrticaceos verm) ; 

 105. Sycamores, PlatcmaceoB ; 106. TTaZn.'w^s, Juglanda- 

 cem ; 107. Mastworts, Cupuliferm ; 108. Godeworts, 

 MyricaceoB ; 109. JSwchworts, Betulacece ; 110. Willows, 

 SalioaceoB. 



(The Conifers, spoken of above, make up the 111th 

 order.) 



32. The CLASS ENDOGENS is divided into if/iy-ee 

 Sub-classes : the Spadaciflorous, the Florideous, and tlie 

 Olumaceous Endogens. (Tlie orders enumerated Iiere oc- 

 cm- in the Northern and Middle States.) 



I. Spadaoifloeous Sub-class. 



S3. The plants of this sub-class have flowers destitute 

 of perianth, or furnished with a scaly perianth only, and 

 massed oij a thick, fleshy, and commonly club-shaped axis 

 {spadix), the latter generally wrapped in a sheathing-leaf 

 (spatha). To this spadiciflorous sub-class, however, we 

 also refer plants whose flowers are not attached to a 

 spadix, but scattered. In this case, the flowers are always 

 perianthless. - 

 Orders : 



112. Aroids, AracecB ; 113. Typhads, Typhacew ; 114. 

 Dwikweeds, or Duekmeats, Lemmaceoe ; 115. Najads, 

 Najadaceae. 



