INDEX TO KEY OF FAMILIES AND GENERA 



Abelia, 102. 

 Alx-ria, 88. 

 Abii's, 120. 

 Aljuhra, 100. 

 Abroma, 90. 

 Abronia, 116. 

 Abrophyllum, 98. 

 Abrus, 94. 

 Abuta, 86. 

 Abutilon, 89. 

 Acacia, 93. 

 Acaena, 97. 

 Acalypha, 119. 

 Acampe, 123. 



ACANTHACE.E, 83, 114. 



Acanthocereus, 101. 

 Acantholimon, 109. 

 Acanthomintha, 116. 

 Acanthonema, 114. 

 Acanthopanax, 102. 

 Acanthophippium, 122. 

 Acanthophcenix, 130. 

 Acanthorhiza, 129. 

 Acanthus, 114. 

 Acer, 92. 



ACERACE.E, 81, 92. 

 Aceranthus, 87. 

 Achillea, 107. 

 Achimenes, 113. 

 Aehlys, 87. 

 Acidanthera, 124. 

 Acineta, 123. 

 Aciphylla, 101. 

 Acoelorraphe, 131. 

 Acokanthera, 110. 

 Aconiturn, 86. 

 Aeorus, 131. 

 Acriopsis, 123. 

 Aerista, 130. 

 Acrocomia, 129. 

 Acrophyllum, 98. 

 Acrospira, 128. 

 Acrostichum, 135. 

 Actaea, 86. 

 Actinella, 106. 

 Artinidia, 86. 

 Actinolepis, 106. 

 Actinomeris. 106. 

 Actinoptcris, 135. 

 Actinostemma, 100. 

 Ada, 123. 

 Adansonia, 90. 

 Adelia, 118. 

 Adenandra, 91. 

 Adenanthera, 93. 

 Adenocalymma, 113. 

 Adenocarpus, 94. 

 Adenophora, 108. 

 Adenostoma, 97. 

 Adenostyles, 105. 

 Adesmia, 94. 

 Adhatoda, 114. 

 Adiantopsis, 135. 

 Adiantum, 135. 

 Adlumia, 87. 

 Adonis, 86. 

 Adoxa, 85. 

 ADOXACE^E, 85. 



Apicra, 127. 

 Apios, 95. 

 Apium, 101. 

 Aplectrum, 122. 

 Aplopappus, 105. 

 APOOYNACE.E, 83, 110. 

 Apocynum, 111. 

 Aponogeton, 132. 

 APONOGETONACE.E, 85, 132. 

 Aporocactus, 101. 

 AQUIFOLIACE.E, 81, 91. 

 Aquilegia, 86. 

 Arabis, 88. 

 ARACE.E, 85, 131. 

 Arachis, 94. 

 Arachnanthe, 123. 

 Aralia, 101. 

 ARALIACE.E, 82, 101. 

 Araucaria, 120. 

 Arbutus, 108. 

 Archangelica, 101. 

 Archontophcenix, 130. 

 Arctium, 105. 

 Arctostaphylos, 108. 

 Arctotis, 107. 

 Arctous, 108. 

 Ardisia, 109. 

 Areca, 130. 

 Aregelia, 126. 

 Arenaria, 89. 

 Arenga, 130. 

 Arethusa, 123. 

 Argemone, 87. 

 Argyreia, 111. 

 Ariocarpus, 100. 

 Arisaema, 131. 

 Arisarum, 131. 

 Aristea, 124. 

 Aristoloehia, 117. 

 ARISTOLOCHIACE, 84, 117. 

 Aristotelia, 90. 

 Armeria, 109. 

 Arnebia, 111. 

 Arnica, 107. 

 Aronia, 96. 

 Arpophyllum, 122. 

 Arracacia, 101. 

 Arrhenatherum, 134. 

 Artabotrys, 86. 

 Artemisia, 107. 

 Artocarpus, 118. 

 Arthropodium, 128. 

 Arum, 131. 

 Aruncus, 96. 

 Arundinaria, 134. 

 Arundo, 134. 

 Asarum, 117. 

 ASCLEPIADACE.E, 83, 110. 

 Asclepias, 110. 

 Ascyrum, 89. 

 Asimina, 86. 

 Asparagus, 126. 

 Aspasia, 123. 

 Asperula, 103. 

 Asphodeline, 127. 

 Asphodelus, 127. 

 Aspidistra, 127. 

 Asplenium, 136. 



