EXPLANATION OF PLATES. 527 



PLATE 106. Quercus rubra (page 189) in fruit. 



107. Quercus palustris (page 190) in fruit. 



108. Quercus macrocarpa (page 191) in fruit. 



109. Quercus prinoides (page 193) in fruit. 



110. Fagus ferruginea (page 194). Fig. a. nut of the natural size. 



111. Castanea vesca, var. Americana (page 195). Fig. 1. involucre of the 



ripe fruit : fig. 2. nut : both of the natural size. 



112. Betula populifolia (page 199). Fig. 1. a bract : fig. 2. fruit : both 



magnified. 



113. Betula lenta (page 200). Fig. 1. a bract : fig. 2. fruit : both of natural 



size. 



114. Betula nana (page 201). Fig. 1. a bract : fig. 2. fruit : both magnified. 



115. Alnus serrulata (page 202). Fig. 1. a bract of the ripe ament : fig. 2. 



fruit : both magnified. 



116. Alnus viridis (page 203). Fig. 1. a bract : fig. 2. fruit : both magnified. 



117. Salix incana (page 204), (incorrectly named S. Candida in the plate). 



Fig. 1. slannnate aments, nat. size : fig. 2. staminate flower, magnified : 

 fig. 3. fertile aments, natural size : fig. 4. one of the same, mature : fig. 

 5. fruit, magnified. 



118. Salix tristis (page 205). Fig. 1. staminate aments, natural size : fig. 2. 



staminate flower, magnified : fig. 3. fertile aments, natural size : fig. 

 4. fruit, magnified. 



119. Salix lucida (page 208). Fig. 1. staminate ament, natural size : fig. 2. 



staminate flower, magnified : fig. 3. fertile ament, nat. size : fig. 4. fruit, 

 magnified. 



120. Salix pedicellaris (page 212). Fig. 1. staminate ament, natural size : 



fig. 2. staminate flower, magnified : fig. 3. fertile ament, natural size : 

 fig. 4. fruit, magnified. 



121. Populus grandidentata (page 214). Fig. 1. staminate ament : fig. 2. 



fertile ament, natural size : fig. 3. staminate flower magnified. 



122. Adike (Adenia) pumila (page 223). Figs. I. <§• 2. staminate flowers : fig. 



3. sepal and cucullate scale of a fertile flower : figs. 4. 5. fertile flowers. 



123. Aris^ma Dracontium (page 240). Fig. 1. spadix of the staminate plant, 



natural size : fig. 2. staminate flowers, magnified : fig. 3. spadix of the 

 polygamous plant, natural size : fig. 4. the same laid open : fig. 5. an 

 ovary : fig. 6. an ovule : fig. 7. longitudinal section of the same. 



124. Peltandra Virginica (page 241). Fig. 1. spathe laid open, showing the 



spadix covered with flowers : fig. 2. swollen persistent base of the spathe 

 enclosing the fruit : fig. 3. the same laid open : fig. 4. a stamen : jig. 5. 

 an ovule seated on a spongy annulus : fig. 6. a berry cut through 

 longitudinally, showing the single mature seed. (The base of the berry 

 has been incorrectly placed above in the figure.) 



