INDEX OF THE GENERA, 



A. 



page. 1 





page. 



Abies 



76 1 



Arethusa 



69 



Acalypha 



76 1 



Aristida 



20 



Acer 



39 1 



Aristolochia 



70 



Achillea 



67 1 



Aronia 



46 



Acnida 



n\ 



Artemisia 



64 



Acorus 



36 



Arthonia 



85 



Actea 



48 



Arum 



. 76 



Adinomeris 



68 



Arundo 



20 



Adiantum 



81 



Asarum 



45 



j£cidium 



87 



Asclepias 



29 



Agaricus 



88 



Ascyrum 



49 



Ageratum 



64 



Aspai-agus 



35 



Agrimonia 



45 



Aspidium 



80 



Agr .stemma 



44 



Asplenium 



81 



A^rostis 



15 



Asprella 



15 



Aira 



16 



Aster 



65 



Airopsis 



16 



Atragene 



51 



Alectoria 



86 



Atrichum 



83 



Aletris 



35 



Atriplex 



31 



Alisma 



37 



Avena 



20 



Allium 



34 



Azalea 



26 



Alnus 



rs 



B. 





Alc;pecurus 



17 



Baccharis 



65 



Alsine 



43 



B.,piisia 



40 



Amaranthus 



73 



Barbula 



82 



Amanita 



88 



Bartonia 



22 



Ambrosia 



73 



Bartsia 



54 



Ammannia 



23 



Bartramia 



83 



Ammi 



31 



Beomjces 



86 



Ammyrsine 



41 



Berber is 



36 



Ampelopsis 



27 



Betula 



75 



Amphicarpon 



60 



Bidens 



63 



Anagallis 



25 



Blitum 



9 



Anatherum 



20 



Boehmeria 



73 



Andrewsia 



22 



Borrera 



86 



Andromeda 



42 



Boletus 



88 



Andropogon 



20 



Botrychium 



79 



Anemone 



50 



Botrypus 



79 



Angelica 



32 



Brasenia 



52 



Anthemis 



67 



Briza 



19 



Anthoxanthum 



11 



Bromus 



20 



Antirrhinum 



55 



Bryuin 



82 



Apios 



60 



Bunias 



56 



Apocynum 



29 



Buxbaumia 



83 



Aquilegia 



50 



C 





Arabis 



57 



Cactus 



45 



Aralia 



34 



Cakile 



56 



Arbutus 



42 



Calamagrostis 



16 



Arctium 



63 



Calicium 



85 



A r en aria 



43 



Calla 



r6 





page. 



Callistachia 



10 



Callitriche, 



9 



Caltha 



52 



Calysteg-ia 



25 



Campanula 



26 



Car dam in e 



57 



Carduus 



63 



Carex 



71 



Carpinus 



75 



Carya 



74: 



Cassia 



40 



Castanea 



75 



Caulina 



71 



Catalpa 



11 



Caulophyllum 



36 



Ceanothus 



27 



Cecalyphum 



82 



Celastrus 



27 



Celtis 



31 



Cenomyce 



86 



Centauriura 



22 



Ceramium 



84 



Ceratophyllum 



74 



Cetraria 



86 



Cenchrus 



14 



Centaurella 



22 



Cephalanthus 



21 



Cerastium 



44 



Ceratophyllum 



74 



Cercis 



40 



Chaerophyllum 



32 



Chara 



71 



Chelone 



56 



Chelidonium 



49 



Chenopodium 



30 



Chimaphila 



42 



Chironia 



29 



Chrysanthemum 



67 



Chrysosplenium 



4^> 



Cichorium 



63 



Cicuta 



32 



Cimicifuga 



49 



Cinna 



9 



Circaea 



10 



Cirsium 



63 



Cissus 



7 



Cistus 



44 



Claytonia 



28 



Clavaria 



88 



('1 emalis 



51 



