726 



INDEX. 



Artemisia canadensis, 590, 591 

 Artemisia caudata, 590, 591 

 Artemisia spinescens, 572 

 Artemisia tridentata, 559, 570 

 Arum family, 662, 703 

 Arundinaria, 538, 617 

 Asclepias, 710 

 Asclepias cornuti, 462 

 Ascomycetes (as-co-my-ce'tes), 195- 



198, 216-218 



Ascophyllum nodosum, 622, 629 

 Ascus, 190, 213 

 Ash of plants, 79, 80 

 Ash tree, 710 



Aspidium acrostichoides, 253, 257 

 Assimilation, 67, 109 

 Aster, 712 



Aster novae-angliae, 697-700 

 Atoll moor, 611-615 

 Atriplex, 563, 572, 705 

 Atriplex canescens, 570 

 Atriplex confertifolia, 572 

 Auriculariales, 218 

 Austral forests, 535 

 Autotrophic plants, 85 

 Autumn colors, 535 

 Autumnal flora, 562 

 Azalea, 709 

 Azolla, 296, 627 



Bacteria, 164, 165, 623, 624, 626 



Bacteria, nitrite and nitrate, 83 



Bacteriales, 164, 165 



Bacteroid, 93 



Bad Lands, 562 



Bald cypress, 537, 538 



Bangiales, 175 



Banyan tree, 533 



Basidiomycetes (Ba-sid"i-o-my-ce'- 



tes), 199-208, 218 

 Basidium, 201, 213 

 Bassweed, 625, 626 

 Bast, 50-52 



Batrachospermum, 171-173, 175 

 Bazzania, 25 

 Beard grasses, 559, 561 

 Bedstraws, 711 

 Beechnut, 452 



Beet, osmose in, 15, 16, 17, 18 

 Begonia, 407 

 Bellflower, 711 

 Benthos, 621 

 Berry, 454, 455> 45^ 

 Betulaceae, 704 



Bicuculla, 706 



Bidens, 458 



Bignonia, 711 



Big trees, 538-541 



Bilberries, 709 



Biothermal lines, 501, 503 



Biotic factors, 479, 509 



Birch, 704 



Bird's-nest fungi, 220 



Blackberry, 454 



Black fungi, 198 



Bladderwort, 610, 711 



Blasia, 164, 236 



Bloodroot, 706 



" Blowouts," 599, 561 



Bluets, 436, 437, 602, 711 



Boletus, 209 



Boletus edulis, 209 



Boraginaceae, 710 



Boreal forests, 534 



Botrychium, 295 



Botrydiaceae, 162 



Botrydium granulatum, 146, 162 



Bouteloua oligostachya, 559, 562 



Broom sedge, 559 



Brown algse, 628; uses of, 170 



Bryales, 349 



Bryophyta (Bry-oph'y-ta), 653 



Bud sage, 572 



Buds, winter condition of, 374377 



Buckeye family, 686, 707 



Buckthorn, 708 



Buckwheat, 705 



Buffalo-grass, 559 



Bug seed, 563, 705 



Bulb, 372 



Bulbilis dactyloides, 559 



Bulrushes, 606, 625 



Bunch-grasses, 559, 561 



Burr-grass, 590 



"Bush," 516 



Buttercup, 676 



Butternut, 452, 670, 704 



Butterwort, 610 



Buttes, 562, 563 



Buttonbush, 711 



Buttonwood, 706 



Cacti, 395, 559, 560, 566, 570-573, 78 

 Cakile edentula, 590 

 Cakile fusiformis, 590 

 Calamagrostis longifolia, 594 

 Calamovilfa brevipilis, 592 

 Calla palustris, 662 



