-eyed pea, 1069 



-greasewood, 842 

 -gum, 1265 



-haw, southern-. 1556 



-mangrove, 1393 



-mangrove family, 1392 



-medick, 1046 



-sedge, 464 



-snakeroot, 653 



-titi, 1095 



-willow, 757 

 Blackberry, 1035 

 Bladder pod, 1059 

 Bladderwort, 4, 1513 



common-, 1519 



cone-spur-, 1522 



family. 1510 



floating-, 1519 



horned-, 1516 



purple-, 1519 

 Blaspheme-vine, 663 

 Blazing-star, 1595 

 Bledo. 862 

 Blepharii^lottis 



Blephariglottis, 697 



Chapmanii, 700 



ciliaris, 697 

 Blepharodon, 1609 

 Blite, sea-, 846 

 Bloodleaf. 866 

 Blooming-sally, 1190 

 Blue 



-beech. 778 



-cardinal flower, 1580 



-elder-berry, 1559 



-eyed grass, 673 



-flag, southern-, 682 



-hyssop, 1458 



-jasmine. 923 



-joint, 226 



-lettuce, 1701 



-star, 1333 



-stem goldenrod, 1612 



-vervain, 1399 



-violet, common-, 1154 



-violet, woolly-, 1153 



-water-lily, 902 



-waxweed. 1167 



-weed, 1656 

 Bluebell, 1321, 1391, 1574 



family, 1571 

 Blueberry, 1269 



Elliott's-, 1270 



-hawthorn. 1019 

 Bluebonnet, 1045 

 Bluegrass, 185 



Arctic-. 189 



bog-, 190 



Canada-, 189 



fowl-, 190 



Kentucky-, 189 



Nevada-, 190 

 Bluehearts, 5, 1498 

 Bluestem, 338 

 Bluets, 1543 



Bluntleaf bedstraw, 1540 

 Boehmeria, 791, 1362, 

 1368, 1369 



cylindrica, 791 

 cylindrica, 791 

 Drummondiana, 791 



scabra, 791 

 Bog 



-bluegrass, 190 



-button, whitehead-, 5, 

 593 



-hemp, 791 



-marsh-cress, 976 



-mat, 575 



-orchid, 



boreal-, 710 

 green-flowered-, 706 

 slender-, 709 

 sparsely-flowered-, 709 

 tall white-, 710 

 Thurber's-, 703 



-rush, 606 

 Bogmoss, 5, 578 



family, 578 

 Boltonia, 1630 



asteroides, 1631 



diffusa, 1631 



latisqiiama, 1631 

 Bonamia 



aqiiatica, 1353 



Michauxii, 1353 

 Boneset, 1601 

 Borage family, 1383 

 Boraginaceae, 1383 

 Boreal bog-orchid, 710 

 Borrichia, 1367, 1655 



frutescens, 1655 

 Bottle 



-brush, 46 



-caric-sedge, 527 



-gentian, 1326 

 Bottomland post-oak, 785 

 Box. running-, 1551 

 Boxelder, 1104 

 Bramble, 1035 

 Bramia Monnicri. 1458 

 Brasenia, 3, 4, 909 



purpurea, 909 



Schreberi, 909 

 Brass buttons, 1686 

 Brazilian vervain, 1397 

 Breweria 



aquatica, 1353 



Michauxii, 1353 

 Breynia, 1082 



Bristle grass, 332 

 Bristly sedge, 527 

 Briza, 192 



maxima, 192 



minor, 192 

 Broad 



-beech fern, 72 



-leaved pondweed, 117 



-leaved twayblade, 713 



-lipped twayblade, 713 

 Broadfruited bur-reed, 91 

 Brome, 175 

 Bromus, 175, 177 



ciliatus, 177 



japonica, 177 



Richardsonii, 177 

 Brook 



-feather, 915 



-pimpernel, 1493 



-saxifrage, 1002 

 Brooklime, American-, 



1493 

 Brookweed, 1277 

 Broom-wood, 1127 

 Broomweed, 1608 

 Brown-eyed Susan, 1651 

 Brunnichia, 795 



cirrhosa, 796 



ovata, 795 

 Buchnera, 5, 1498 



americana, 1499 



brevi flora, 1499 



floridana, 1499 

 Buena moza, 1453 

 Bugle-weed, 1437 



Virginia-, 1437 

 Bulbostylis, 400, 473 



capillaris, 402 



ciliatifolia, 400 



Funckii, 402 



juncoides, 402 

 ampliceps, 402 

 Bulbous adder's tongue, 49 

 Bull paspalum, 292 

 Bull thistle, 1695 

 Bulrush, 3, 4, 5, 344 



giant-, 357 



great-, 360, 363 



hard-stem-, 360 



river-, 349 



salt-marsh-, 349 



soft-stem-, 363 



three-square-, 357 

 Bunchberry, 1395 

 Bunchflower, 655 

 Bur 



-clover, 1046 



-cucumber, one-seeded-, 

 1571 



1743 



