Index of Genera. 



(Synonyms arc printed in Italics.) 



AcRiilon, 174 

 Acer, 23, 307 

 Acetabula, 281 

 Achillea, 56 

 Achnanthes, 235 

 Achnanthidium, 235 

 Acorus, 1 12 

 Acremonium, 297 

 Adonis, 1 

 Adoxa, 51 

 jEgerita, 300 

 .Bgopodium, 4G 

 JEthusa, 49 

 Agaricus, 256 

 Agrimonia. 37, 307 

 Agropyron, 130, 30'' 

 Agrostis, 122, 309 

 Aira, 123, 309 

 Ajuga, 89 

 Alchemilla. 37 

 Alectoria, 219 

 Aleuria, 281 

 Alisma, 112 

 Allium, 109 



Alnus, 96 



Alopecurus, 122, 309 

 Alyssum, 307 

 Amanita, 242 

 Amanitopsis, 243 



Amaranth us, 308 



Amblyodon, 182 



Amblystegium, 197 



Amsinkia, 306 



Anabaena, 233 



Anagallis, 72 



Anchusa, 75 



Andreaea, 155 



Andromeda, 155 



Anellaria, 256 



Anemone. 1 



Aneura, 213 



Angelica, 49 



Anixia, 275 



Anomadon, 191 



Antennaria, 55 



Anthocerus, 214 



Anthemis, 57 



Anthoxanthum, 121 



Anthriscus, 48 



Anthrodesmus, 232 



Anthyllis, 27 



Antitrichia, 191 



Aphanothece, 233 



Aquilegia, 4 



Arabis, 305 



Archidium, 161 

 Arctium, 61 

 Arctostaphvlos, 6S 

 Arcyria, 302 

 Arenaria, 17, 305 

 Armillaria, 243 

 Arnebia, 30G 

 Arrhenatherum, 124 

 Artemisia, 58, 30(1, 308 

 Arthrobotrys, 298 

 Arum, 112 

 Asarum, 93 

 Asco bolus, 291 

 Ascophanus, 291 

 Aspergillus, 296 

 Asperugo, 75 

 Asperula, 52 

 A spit! in in, 135, 136 

 Asplenium, 132, 309 

 Asterionella, 235 

 Astragalus, 28 

 Athyrium, 134, 309 

 Atriplex, 91 

 Aulacomnium, 182 

 Auricularia, 271 

 Avena, 123 



Badhamia, 300 

 Baeomyces, 21G 

 Balocotricha, 293 

 Barbarea, G 

 Barbula, 176 

 Barlaea, 282 

 Bartramia, 183 

 Bartsia, 82 

 Bazzania, 20G 

 Bellis, 54 

 Belonidium, 287 

 Belonium, 287 

 Berberis, 307 

 Beta, 91 

 Betula, 95. 308 

 Bidens, 56 

 Bispora, 298 

 Blackstonia, 308 

 Blasia, 212 

 Blec/iiiiun, 132 

 Blepharostoma, 206 

 Blepharozia, 205 

 Blindia, 168 

 Bolbitius, 253 

 Boletus, 264 

 Borago, 75 



Bostrichonema, :• 

 Botrychium, 140 

 Botryococcus, 233 

 Botryosporium, 2< 6 

 Botrytis, 297 

 Bovista, 241 

 Brachyodus, 163 

 Brachypodium, 1 

 Brachysporium, 2 11 1 

 Brachythecium,i92, 310 

 Brassica, 9 

 Breutelia, 184 

 Briza, 125 

 Bromus, 128, 309 

 Bryum, 185 

 Buda, 18 

 Bulbochaete, 230 

 Bulgaria, 292 

 Bunium, 17 

 Bupleurum, 46 

 Bursa, 10 



Caeoma, 274 

 Calamintha, 85 

 Caldesiella, 268 

 Callitriche, 42 

 Calloria. 293 

 Calloria, 292 

 Calluna, 69 

 Calocera, 271 

 Calonectria, 279 

 Caltha, 3 

 Camelina, 9 

 Campanula, 67 

 Camptothecium, 192 

 Campylopus, 168 

 Cantharellus. 262 

 Capsella, 10 

 Cardamine. 7 

 Carduus, 61 

 Carex, 116, 308 

 Carlina, Go 

 Car um, 46 

 Castalia, 4 

 Castanea, 96 

 Catherinea, 157, 309 

 Caucalis, 50, 307 

 Cenangium, 292 

 Centaurea, 62, 306 

 Cephalothecium, 298 

 Cephalozia, 207 

 Cerastium, 15 

 Ceratocephalus, 305 

 Ceratophyllum, 99 



