Buckbrush _Symphoricarpos orbiculatus_ 59 Buckeye _Aesculus_ 55 Buckhorn _Plantago lanceolata_ 50 Buckthorn _Rhamnus_ 58 Buckwheat _Fagopyrum_ 42 Buffalogourd _Cucurbita foetidissima_ 40 Buffalograss _Buchloë_ 20 Buffelgrass _Pennisetum ciliare_ 24 Bugleweed _Lycopus_ 47 Bugseed _Corispermum nitidum_ 40 Bulbostylis _Bulbostylis_ 27 Bulrush _Scirpus_ 28 Bumelia _Bumelia_ 56 Bunchflower _Melanthium_ 29 Bundleflower _Desmanthus_ 31 Burclover _Medicago_ 32 Burcucumber _Sicyos_ 52 Burdock _Arctium_ 36 Burgrass _Tragus_ 26 Burhead _Echinodorus_ 29 Burnweed _Erechtites_ 41 Burragweed _Franseria tomentosa_ 42 Burreed _Sparganium_ 30 Burrograss _Scleropogon_ 25 Bursage _Franseria_ 42 Buttercup _Ranunculus_ 51 Butternut _Juglans cinerea_ 57 Buttonbush _Cephalanthus_ 56 Buttonweed _Diodia_ 41 Cabbage _Brassica oleracea_ 38 Calceolaria _Hybanthus_ 45 Caltrop _Kallstroemia_ 45 Camas _Camassia_ 29 Camomile _Anthemis_ 36 Camphorweed _Heterotheca_ 44 Canarygrass _Phalaris_ 24 Cane _Arundinaria_ 19 Cardinalflower _Lobelia cardinalis_ 47 Cardinalflower, western _Lobelia splendens_ 47 Carpetgrass _Axonopus_ 19 Carpetweed _Mollugo_ 48 Carrot _Daucus_ 41