INDEX OF THE GENERA. 



A. 



page. 



i 



page. 



Abies 



76 



Aretliusa 



69 



Acalypha 



76 



Aristida 



20 



Acer 



39 



Aristolochia 



70 



Achillea 



67 



Aronia 



46 



Acnida 



77 



Artemisia 



64 



A corns 



36 



Arthonia 



85 



Actea 



48 



Arum 



76 



Aciinomeris 



68 



Arundo 



20 



Adiantum 



81 



A * arum 



45 



.Kcidium 



87 



Asclepias 



29 



Aga: icus 



88 



Ascyrum 



49 



Agcratum 



64 



Asparagus 



35 



Agrimouia 



45 



Aspidium 



80 



Agrostemma 



44 



Asplenium 



81 



Agrostis 



15 



Asprella 



15 



Aira 



16 



Aster 



65 



Airopsis 



v 16 



Airagene 



51 



Alectoria 



86 



Atrichum 



83 



Aletris 



35 



Atriplcx 



31 



Alisma 



37 



Avena 



20 



Allium 



34 



Azalea 



26 



Alnus 



73 



B. 





Alopecurus 



17 



Baccharis 



65 



Alsine 



43 



Bjpiisia 



40 



Amaranthus 



73 



Barbula 



82 



Amanita 



88 



Barton ia 



22 



Ambrosia 



73 



Bartsia 



54 



Ammannia 



23 



Bartramia 



83 



Ammi 



31 



Beomjces 



86 



Ammyrsine 



41 



Berberis 



36 



Ampelopsis 



27 



Betula 



75 



Amphicarpon 



60 



Bidens 



63 



Anagallis 



25 



Blitum 



9 



Anatherum 



20 



Bcehmeria 



73 



Andrewsia 



22 



Borrera 



86 



Andromeda 



42 



Boletus 



88 



Andropogon 



20 



Botrychiura 



79 



Anemone 



50 



Botrypus 



79 



Angelica 



32 



Brasenia 



52 



Anthemis 



67 



Briza 



19 



Anthoxanthum 



11 



Bromus 



20 



Antirrhinum 



55 



Bryum 



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 



Arenaria 



43 j 



Calls 



16. 



Callistachia 



Callitriche, 



Caltha 



Calystegia 



Campanula 



Cardamine 



Carduus 



Carex 



Carpinus 



Carya 



Cassia 



Castanea 



Caulina 



Catalpa 



Caulophyllum 



Ceanotlius 



Cecalyphum 



Celastrus 



Celtis 



Cenomyce 



Centaurium 



Ceramium 



Ceratophyllum 



Cetraria 



Cenchrus 



Centaurella 



Cephalanthus 



Cerastium 



Ceratophyllum 



Cercis 



Chaerophyllum 



Chara 



Chelone 



Chelidonium 



Chenopodium 



Chimaphila 



Chironia 



Chrysanthemum 



Chrysosplenium 



Cichorium 



Cicuta 



Cimicifuga 



Cinna 



Circaea 



Cirsium 



Cissus 



Cistus 



Claytonia 



Clavaria 



Clematis 



page. 

 10 

 9 

 52 

 25 

 26 

 57 

 63 

 71 

 75 

 74 

 40 

 75 

 71 

 11 

 36 

 27 

 82 

 27 

 31 

 86 

 22 

 84 

 74 

 86 

 14 

 22 

 21 

 44 

 74 

 40 

 32 

 71 

 56 

 49 

 30 

 42 

 29 

 67 

 43 

 63 

 32 

 49 

 9 

 10 

 63 

 27 

 44 

 28 

 88 

 -51 



