750 
Biatora 
rufonigra Tuck., 3, 17, 266, 282, | 
287, 288, 289, 322, 665 
russellii Tuck., 297 
sanguineoatra (Fr.) Tuck., 267 
schweinitzii Fr., 229, 268 
spheeroides (Dicks.) Tuck., 230, 
267, 680, 702 
subfusca Fr., 303 
suffusa Fr., 281, 323, 702 
trachona Flot., 299 
turgida (Fr.) Nyl., 227 
turgidula (Fr.) Nyl., 267, 671, 700 
uliginosa (Schrad.) Fr., 267, 294, 
323, 673, 701 
varians (Ach.) Tuck., 323, 680, 701 
vernalis (I,.) Fr., 266, 680, 700 
viridescens (Schrad.) Fr., 266, 
679, 700 
Bicuculla cucullaria (L.) Millsp., 362, 
388, 555 
Bidens cernua Iy., 597 
comosa (A. Gray) Wiegand, 358, 
362, 368, 414 
frondosa L., 358, 362, 414, 425, 
597, 626 
levis (L.) B.S.P., 358, 414, 597, 
626 
Bignoniacez, 82, 124 
Blepharostoma trichophyllum 
Dumort, 193 
Blephila hirsuta (Pursh) Torr., 404 
Boltonia asteroides (L.) L’Her., 411, 
626 
Boraginacez, 403, 590 
Botrychium lunaria (1. ) Sw., 362, 369, 
619 
virginianum (L,.) Sw., 616 
Botrydium, 198 
Botryococcus, 614 
Boutelouacurtipendula ( Michx. )Torr., 
367, 375, 574 
hirsuta Lag., 367, 375 
oligostachya (Nutt. ) Torr., 21, 22, 
574 
Brachyactis angustus ( Lindl.) Britton, 
596 
Brachypuccinia, 543, 548 
Brachythecium, 36 
campestre Sch., 49 
flexicaule Ren. and Card., 49 
INDEX. 
Brachythecium 
oxycladon (Brid.) Grout, 49 
plumosum Sch. (?), 49 
salebrosum Sch., 49 
starkei Sch., 49 
Brassica arvensis (L.) B.S.P., 389 
nigra (L.) Koch, 388, 622, 627, 628 
Brauneria pallida, 20, 21 
| Bromus ciliatus L., 375, 549, 574 
(Le) | 
kalmii A. Gray, 375, 574 
purgans L., 574 
secalinus L., 375 
Broussonetia papyrifera (Linn. ) Vent., 
71, 85, 87, 94, 130, 131, 132, 133 
Buellia, 6, 221, 227, 282, 283, 665, 672, 
674 
alboatra (Hoffm.) Th. Fr., 270, 
303, 324, 671, 704 
var. saxicola Fr., 281, 298, 299, 
324 
dialyta (Nyl.) Tuck., 230, 271 
geographica (Pers. )Tuck., 232,271 
myriocarpa (DC.) Mudd., 230, 
271, 324, 673, 704 
var. polyspora Willey, 230, 
271, 704 
parasema ( Ach.) Th. Fr., 270, 303, 
306, 324, 671, 672, 673, 675, 
704 
var. triphragmia Nyl., 271 
parmeliarum (Sommerf.) Tuck., 
230, 272 
petrzea (Flot., Koerb.) Tuck., 3, 
17, 223; 1224/2332) 27ieeoo. 
287, 289, 325, 662, 664, 704 
var. grandis Floerk.,17,229,271 
var. montagneei, 17, 233, 271, 
285, 325, 664, 704 
pullata Tuck., 278, 281, 282, 285, 
287, 325, 664, 704 
spuria (Schoer.) Arn., 17, 285, 287, 
289, 324 
turgescens (Nyl.) Tuck., 281, 306, 
325 
Bursa bursa-pastoris (L.) Britton, 137, 
142, 389 
Butneria fertilis (Walt. ) Kearney, 73, 
85 
florida (Linn. ) Kearney, 72, 85, 87, 
TOO 130, pIs i, 132) 0033 
Butominez, 651 
