Abietacez 
Abronia 
Abutilon 
Acalypha 
Acanthaceze 
Acer 
Aceracee 
Acerates 
Achillea 
Acnida 
Acorus 
Actza 
Acuan 
Adder’s Tongue 
Adiantum 
Adicea 
A®sculus 
Afzelia 
Agastache 
Agalinis 
Agoseris 
Agrimonia 
Agropyron 
Agrostemma 
Agrostidez 
Agrostis 
Aizoacez 
Alfalfa 
Alisma 
Alismacez 
Alismales 
Allionia 
Allium 
Allocarya 
Alopecurus 
Alsine 
Alum-root 
Alyssum 
Amaranthaceze 
Amaranthus 
Amaryllidacez 
Ambrosia 
Ambrosize 
Amelanchier 
Ammannia 
Amorpha 
Ampelopsis 
Anacardiaceze 
Anagallis 
Andropogon 
Andropogoneze 
Androsace 
Anemone 
Anemonella 
Anise Hyssop 
Anogra 
Anonacez 
Antennaria 
Anthemidez 
Anthemis 
Anthophyta 
Anychia 
Apiastrum 
Apios 
Aplopappus 
Apocynaceze 
Apocynum 
INDEX 
Apple 
Aquilegia 
Arabis 
Araceze 
Aragallus 
Arales 
Aralia 
Araliacez 
Arctium 
Arctostaphylos 
Arenaria 
Argemone 
Arisema 
Aristida 
Aristolochiaceze 
Arnica 
Arrhenatherum 
Arrow-grass 
Arrow-heads 
Artemisia 
Arum 
Asarum 
Asclepiadacez 
Asclepias 
Asclepiodora 
Ascyrum 
Ash 
Asimina 
Asparagus 
Aspen 
Asplenium 
Aster 
Asteraceze 
Asterez 
Astragalus 
Atheropogon 
Athyrium 
Atriplex 
Avena 
Avenez 
Avens 
Azolla 
Baccharis 
Bacopa 
Balsam-apple 
Balsaminacez 
Baneberry 
Baptisia 
Barbarea 
Barberry 
Batrachium 
Bean 
Bearberry 
Beard-grass 
Beard-tongue 
Bear-grass 
Beckmannia 
Bed-straw 
Beech, blue 
Bee-plant 
Beggar-ticks 
Belamcanda 
Bellflower 
Berberidacez 
Berberis 
Bergamot 
Berteroa 
Ws 
Berula 
Besseya 
Betula 
Betulacez 
Bicarpellatze 
Bicuculla 
Bidens 
Bindweed 
Birch 
Bitter-sweet 
Blackberry 
Blackberry lily 
Black-eyed Susan 
Bladder-nut 
Bladder-pod 
Bladder-wort 
Blazing-star 
Blephilia 
Blood-root 
Bluebells 
Blue flag 
Blue-stem 
Blue-weed 
Beebera 
Beehmeria 
Bog bean 
Boltonia 
Boneset 
Borage 
Boraginaceze 
Botrychium 
Bouncing-bet 
Bouteloua 
Boxelder 
Brachyactis 
Brassica 
Brassicacez 
Brauneria 
Bread-root 
Brier 
Bromus 
Broom rape 
Broom-weed 
Buck-bean 
Buckeye 
Buckhorn 
Buckthorn 
Buckwheat 
Buchloe 
Buffalo berry 
Buffalo bur 
Bugle-weed 
Bug-seed 
Bulbilis 
Bulrush 
Burdock 
Bur-head 
Bur-marigold 
Burnet 
Burning bush 
Bur-nut 
Bur ragweed 
Bur-reed 
Bursa 
Bush-clover 
Button-ball 
Buttonbush 
89, 
22, 
