70 CLASS V. ORDER I. 



colored ; capsule one celled, live valved, five seeded, 

 surrounded by the calyx. 



112. Thesium. Calyx five cleft, bearing the sta- 

 mens ; corolla none ; seed one, covered. 



113. QuERiA. Calyx inferior, connivent, five part- 

 ed ; segments oblong, hollowed at lip ; corolla none ; 

 capsule membranous, not opening. 



Order II. DIGYNIA. Ttoo styles. 

 A. Corolla monopetalous. 



114. Apocynum. Corolla bell shaped ; five necta- 

 reons filaments alternating with the stamens ; follicles 

 two. 



115. AscLEPiAs. Corolla reflected; nectaries five, 

 ovate, concave, with a little horn projecting from 

 each ; follicles two. 



116. Gentiana. Corolla tubular at the base, with- 

 out nectariferous pores ; capsule two valved, one 

 celled, many seeded ; number of parts variable. 



117. CuscuTA. Calyx four or five cleft; corolla 

 four or five cleft ; capsule two celled, opening trans- 

 versely at the base. 



B. Flowers five pe tailed, inferior. 



118. Heuchera. Petals five, inserted on the calyx; 

 capsule two celled, two beaked. 



C. Flowers incomplete. 



119. Salsola. Calyx five parted; corolla none; 

 capsule one seeded ; seed spiral, 



120. Chenopodium. Calyx five parted, five cor- 

 nered ; corolla none ; seed one, lenticular, invested 

 with the calyx. 



121. Ulmus. Calyx five cleft ; corolla none ; seed 

 one, inclosed in a flat membranous capsule. 



