INDEX TO KEY OF FAMILIES AND GENERA 



Abelia, 102. 

 Aberia, 88. 

 Abies, 120. 

 Abobra, 100. 

 Abroma, 90. 

 Abronia, 116. 

 Abrophyllum, 98. 

 Abrus, 94. 

 Aljuta, 86. 

 Abutilon, 89. 

 Acacia, 93. 

 Aciena, 97. 

 Acalj-pha, 119. 

 Acampe, 123. 

 AC.\NTH.\CE.E, 83, 114. 

 Acanthocereus, 101. 

 Acantholimon. 109. 

 Acanthoiuintha, 116. 

 Acanthonema, 114. 

 Acanthopanax, 102. 

 Acanthophippium, 122. 

 Acanthophoenix, 130. 

 Acanthorhiza, 129. 

 Acanthus, 114. 

 Acer, 92. 



ACERACE.E, 81, 92. 

 Aceranthus. 87. 

 AchUlea, 107. 

 Achimenes, 113. 

 Achlys, 87. 

 Acidanthera, 124. 

 Acineta, 123. 

 Aciphylla, 101. 

 Acoelorraphe, 131. 

 Acokanthera, 110. 

 Aconitum, 86. 

 Acorus, 131. 

 .\criopsis, 123. 

 Acrista, 130. 

 Acrocomia, 129. 

 Acrophyllum, 98. 

 Acrospira, 128. 

 Acrostichum, 135. 

 Actsea, 86. 

 Actinella, 106. 

 Actinidia, 86. 

 .\ctinolepis, 106. 

 Actinomeris. 106. 

 Actinopteris, 135. 

 Actinostemma, 100. 

 Ada, 123. 

 Adansonia, 90. 

 Adelia, 118. 

 Adenandra, 91. 

 Adenanthera, 93. 

 Adenocaljinina, 113. 

 Adenocarpus. 94. 

 Adenophora, 108. 

 Adcnostoma, 97. 

 Adenostyles, 105. 

 Adcsmia, 94. 

 Adhatoda, 114. 

 Adiantop.sis, 135. 

 Adiantum, 135. 

 AdUimia, 87. 

 Adonis, 86. 

 Adoxa, 85. 

 AnoxACEiE, 85. 



jEchmea, 126. 

 jEgle, 91. 

 JSglopsis, 91. 

 jEgopodium, 101. 

 Aerides, 123. 

 ^rva, 116. 

 jEsculus, 92. 

 ^thionema, 87. 

 jEtoxicon, 118. 

 Aizelia, 95. 

 Agalmyla, 114. 

 Aganisia, 123. 

 Agapanthus, 127. 

 Agapetes, 108. 

 Agathis, 120. 

 Agave, 12.5. 

 Agdestis, 116. 

 Ageratum, 105. 

 Aglaia, 91. 

 Aglaonema, 131. 

 Agrimonia, 97. 

 Agropyron, 134. 

 Agrostis, 134. 

 Ailanthus, 91. 

 Aira, 134. 

 A1ZOACE.E, 82, 101. 

 Ajuga, 115. 

 Akebia, 87. 

 Ala.ngiace.e, 82, 102. 

 Alangiuni, 102. 

 Alberta, 103. 

 Albizzia, 93. 

 Albuca, 128. 

 Alchemilla, 97. 

 Alohornea, 118. 

 Alectorunis, 128. 

 Aleetryon, 92. 

 Aletris, 127. 

 Aleurites, 119. 

 Alhagi, 94. 

 Alisma, 132. 

 ALI.s^L•lCE.E, 85, 132. 

 AUamanda, 110. 

 Allium, 128. 

 AlloplectuS, 114. 

 Alnus, 119. 

 Alocasia, 131. 

 Aloe, 127. 

 Alonsoa, 112. 

 Alpinia, 125. 

 Alsine, 89. 

 Alsophila, 136. 

 Alstonia, 110. 

 Alstroemeria, 125. 

 Altamiranoa, 9^/^ 

 Althaea, 89. •~^ 

 Alyssuiu, 88. 



A.MARANTACE.E, S3. 116. 



Amarantus, 116. 



AMARYLLIDACE.E, 84, 124. 



Amarj'Uis, 125. 

 Amasonia, 114. 

 Ambrosia, 106. 

 Ambrosinia, 131. 

 Amelanchier, 97. 

 Amellus, 107. 

 Amherstia, 95. 

 Amicia, 95. 



Ammobium, 105. 

 Ammocharis, 125. 

 Ammophila, 134. 

 Amomum, 125. 

 Amorpha, 95. 

 Amorphophallus, 131. 

 Ampelopsis, 92. 

 AmphicarpiEa, 95. 

 Amphicome, 113. 

 Amsonia, 110. 

 Amyris, 91. 

 Anacampseros, 89. 



ANACVRDIACEiE, 81, 92. 



Ancardium, 92. 

 Anagallis, 109. 

 Anamirta, 86. 

 Ananas, 126. 

 Anaphalis, 105. 

 Anarrhinum, 112. 

 Anastatica, 88. 

 Anchusa, 111. 

 Andira, 94. 

 Andrachne, 118. 

 Androcymbium, 128. 

 Andromeda, 108. 

 Audropogon. 133. 

 Androsace, 109. 

 Androstephium, 127. 

 Aneilema, 128. 

 Anemia, 135. 

 Anemone, 86. 

 Anemonopsis. 86. 

 Anemopsis, 117. 

 Anethum, 101. 

 Angelica, 101. 

 Angelonia, 112. 

 Angiopteris, 135. 

 Angophora, 98. 

 AngrEecum, 123. 

 Anguloa, 122. 

 Anigozanthos, 125. 

 Anisacanthus, 114, 

 Anisostichus, 113. 

 Anisotes, 114. 

 Annona, 86. 



ANNONACE.E, 80, 86. 



Anoectochilus, 122. 

 Anogramma, 135. 

 Anoiganthus, 125. 

 Anopterus, 98. 

 Anredera, 85. 

 Ansellia, 122. 

 Antennaria, 105. 

 Anthemis, 107. 

 Anthericum, 127. 

 .Antholyza, 124. 

 .\nthoxanthum, 134. 

 -\nthuriuin, 131, 

 Anthyllis, 94. 

 Antiaris, 118. 

 Antidesma. 118. 

 Antigonon, 117. 

 Antirrhinum, 112, 

 Antrophyum, 135. 

 Aotus, 95. 

 Aphananthe, 118. 

 Aphelandra, 114. 

 Aphyllon, 85. 



Apicra, 127. 

 Apios, 95. 

 Apium, 101. 

 Aplectrum, 122. 

 Aplopappus, 105. 

 Apocynace.e, 83, 110. 

 Apocynum, 111. 

 Aponogeton, 132. 

 Aponogetonace^, 85, 132. 

 Aporocactus, 101. 

 Aquifoliace^, 81, 91. 

 Aquilegia, 86. 

 Arabis, 88. 

 AracejE, 85, 131. 

 Arachis, 94. 

 Arachnanthe, 123. 

 Aralia, 101. 

 Araliace^, 82, 101. 

 Araucaria, 120. 

 Arbutus, 108. 

 Archangelica, 101. 

 Archontophoenix, 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. 

 Aris£ema, 131. 

 Arisarum, 131. 

 Aristea, 124. 

 Aristolochia, 117. 

 Aristolochiace.e, 84, 117. 

 Aristotelia, 90. 

 Armeria, 109. 

 Arnebia, 111. 

 Arnica, 107. 

 Aronia, 96. 

 Arpophyllum, 122. 

 Arracacia, 101. 

 Arrhenatherum, 134. 

 Artabotrj's, 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. 

 .Vsporula, 103. 

 Aisphodcline, 127. 

 Asphodelus. 127. 

 Aspidistra, 127. 

 Asplenium, 136. 



(137) 



