INDEX. 



347 



Birthwort, Aristolochia, 

 Bishop's Cap, Mitella, 

 Bishop's-Weed, Discopleura, . 

 Bitter-Cress, Cardamine, . 

 Bitter-Nut, sp. of Carya, 

 Bittersweet, sp. of Solanum, 

 Bitterweed, sp. of Ambrosia, . 

 Black Alder, sp. of Ilex, . 

 Blackberry, some sp. of Rubus, 

 Black Bindweed, sp. of Polygonum 

 Black Grass, sp. of Juncus, . 

 Black Haw, Sloe, sp. of Viburnum, 

 Black Horehound, Ballota, . 

 Black Jack, sp. of Quercus, 

 Black-Moss, Tillandsia, . 

 Black Oat-Grass, sp. of Stipa, . 

 Black Snake-Root, Sanicula, . 

 Black Thorn, Sloe, sp. of Prunus, 

 Bladder Ketmia, sp. of Hibiscus, 

 Bladder-nut, Staphylea, 

 Bladder-pod, Vesicaria, 

 Bladder-wort, Utricularia, . 

 Blazing Star, Liatris and Chamaelirium, 



Blephilia, 



Blessed Thistle, Cnicus, 



Bletia, . . . 



Elite, Blitum, .... 



Blitum, BliU, .... 



Blood-root, Sanguinaria, 



Blue Beech, Carpinus, 



Blueberry, Vaccinium, . 



Blue Bottle, sp. of Centaurea, . 



B ue Cohosh, Caulophyllum, 



Blue Curls, Trichostema, . 



Blue False Indigo, sp. of Baptisia, 



Blue Flag, sp. of Iris, 



Bluets, Oldenlandia and Houstonia. 



B!ue-eyed Grass, Sisyrinchium, 



Blue Grass, sp. of Poa, . 



Blue Hearts, Buchnera, 



Blue Joint-Grass, sp. of Calamagrostis, 



Blue Lettuce, Mulgedium, 



Blue Tangle, sp. of Gaylussacia, 



Blue Weed, Echium, 



BoGhmeria, False Nettle, 



Bog- Asphodel, Narthecium, 



Bog-Rush, Juncus, 



Boltonia, ..... 



