INDEX OF GENERA. 



Abies 92 



Abutilon 19,129 



Acalypha 85,132 



Aoanthospermum . .. 131 



Acer 23 



Acerates 64 



Achillea 52,131 



Acnida 80 



Acolium 166 



Acorus 101 



Acrothecium 187 



Act^a i 



Actinomeris 51 



Adesmia , 130 



Adiaatum 135 



Adlumia 7 



jEcidium 185 



^gerita 186 



jEschynome 126 



^thusa 39 



Ageratum 131 



Agrimonia 29 



AgrOBtis 117, 133 



Agyrium 194 



Ahnfeltia 206 



Ailanthus 21 



Ailographum 196 



Aira 123 



Alectoria 160 



Aletris 98 



Aliama 98 



Allium 101,127 



Alnns 90 



Alopecurus 116, 133 



AlthjBa 18 



Alyesum 10 



Amanita 167 



Amarantus 80, 133 



Amblogyna 133 



Amblyetegium 152 



Ambrosia 49 



Amelanchier 32 



Amianthium 104 



Ammannia 35,130 



Ammi 130 



Ampelopsis 22 



Amphicarpia 27 



Amphioarpum 124 



Amphoridium 145 



Anabffiua 222 



Anacbaris 93 



Anagallis 61 



Ancnusa 132 



Andrsea 141 



Andromeda 59 



Andropogon 125 



Anemone 1 



Aneura 157 



Angelina 196 



Angiordium 177 



Anomodon 149 



Autennaria 53 



Antbemis 52i 131 



Antbericum 133 



Antboceros 158 



Antboxantbum 123 



Antbyllis 129 



Antirrbinum 70 



Anycbia 17 



Apbanocapsa 223 



Apbanocbaete 211 



Aphanothece 223 



Apbanorrbegma .... 145 



Aphyllon 73 



Apios 27 



Apium 130 



Aplectrum 97 



Apocynum 63 



Aptogonum 215 



Aquilegia 4 



Arabia 9 



Aracbis 130 



Aracbnion 176 



Aralia 40 



Archangelica 38 



Arcbemora 38 



Arcbidium 141 



Arotostapbylos 59 



Arcyria 178 



Arenaria 15 



Aretbnsa 95 



Argemone 6 



AriBcema 100 



Aristida 119 



Aristolocbia 84 



Armillaria 168 



Arrhenatherum 123 



Artemisia 53 



Arthonia 166 



Arthrobotryum 186 



Artbrodesmus 218 



Artbrosporium 186 



Artocreas 174 



Asarum 84 



Asclepias 63 



Ascobolus 194 



Asoomyces 195 



Ascyrum 17 



Asparagus 102 



AspergUlua 187 



Asperugo 132 



Asimiua 5 



Aspidium 136 



Asplenium 136 



Aster 46 



Asterella 158 



Asteroma 181 



Astragalus 130 



Atricbum 147 



Atriplex 81,133 



Atropa 132 



Aulacomnion 147 



Avena 123,134 



Baccbaris 49, 131 



Badbamia 177 



165 



(225) 



