INDEX. 
Page, 
A DIGS poh c rote we Sn co te eee se ree 
ADIONIA So 2o66 ae cuide an See eve nde tacecd. es 247 
PCO Keon cate ace eign oe eile et eee ates 219 
Achillea... 2.00. c cece cee cece eens 235 
ACOMItUM. 202. e ccc cee c cnc nce ence 211 
A CEA ao at ee ohio oh he rte es 211 
Adenocaulon............c00 cee cece cc cee cee 233 
Adiantum.....0, 0. cece cece cee cc cence neces 267 
fEcidium... 2... eee ccc ceca ceceeees 275, 276 
Agoseris .....0. 00. c cece cee cc ec en ccc ccce ace 237 
ABropyron 2.2.0 ccc cl eee eee cece eee ee cess 265 
AGTOSLIS 0.020. cece eee cece eee . 260, 261 
B_% |: Se re ee 261, 262 
AlbUgO 220 cece e ence ewacenes 276 
Alisma. 22.2... ccc cece ec ccc ccc cuceuccece 256 
Allium... ool ccc ccc ccc ce cee cee 253 
Alnus...........¢ ot se saciened cede soeeaee 250, 251 
Alopecurus .-..2 00.000. cece cee ccccceceees 260 
Alsine 2.02. elec cece cece ce cece eee 216 
Amaranthus. .........0..ccccceccccuccccece 247 
Amblysteginm...... pound eet wenteace mgs 274 
Ambrosia... 0.000000 o cece cece ence cncccuce 233 
Amelanchier.......02...-..2.0-.ccceenceeeee 224 
Amellus 2.0.0.0 0. ccc ccc c ccc cecccccaeenees 231 
Amphoridiunt....... .....22.00ceccceeeeees 270 
Amsinckia. .. 2.00.00. cc cc cccccccccccucceece 242 
Anemone .... 2... .c oo eee cece ee ceence 209 
Angelica... 02.00.00. c cc ceccececeacecececece 227 
Ancectangium -.........20.....e0ceceee eee 270 
Antennaria . 20... occ cece ccc ccc ccuceceus 233 
Aphyllon 2.2.00... .0ccccceceeecceeceeaes 245, 246 
Aplopappus..........2.....0c.ccceeeenencee 231 
Apocynum. 2.2... ccccecccccceeccseceeees 240 
Aquilegia. 0.0.0... oe cece cee wcceecceees 211 
7) 1S |, 212 
Aralia .. o.oo. nnn ccc ne ccccccucus 229 
Arbutus . 20.0000. 00 cece ce cceceuanees 238 
Arceuthobium ..........02.cceceeeeeeceeeee 250 
Arctostaphylos Sab eheduc ania namatcesee oes 238 
Arenaria.......0.0 0.00... cee ecceccucceces 216 
Aristida 2.000.000 ooo. cece cc ccccenecees 260 
Ft) 235 
Aronia... o.oo... oe eee ec ccc ececneneees 224 
Artemisia............... 0... cccccecccecees 235 
Arundo ...... 0.000... oo eee cccccccnetcecs 861 
Asarum...... 0.00.00... .--c- ccccceneeeees 249 
Asclepias.....................-eeeeecaneee 240 
Ascophora....................ccnccccceaee 276 
Aspidium............... a sive inteceuueaatoes 268 
Asplenium grea ie oEivnatan Wah cane Siaeeee ees 267 
Aster 231, 232 
Page. 
Astrapalug. ..0..0s006 see veestoseceeeceeecde 290 
AUDA oe soseeetiis ec a cae ddee ln eect 2 
ALTASENE 2625. bos ee ce oc Seecsdinwtcedcbsn 200 
ALTICHUM 32 Siecle Ss acdbecees o'veseeies anc 272 
A triplex ieee ieee te ie he estieid ceed odds 248 
Audibertiaiwosc 5 sce lees cue easetees 246 
Aulacommium.........0......020e,eccee cess 272 
Balsamorhiza ..---- 20.2.2 cence erence cence 234 
Barbarea: acini etme dct aveds eee fpeeeneek 212 
Barbula sccct fh. 2 db deatide eee eee Se teees 269, 270 
BartOnia. ::<cescee sees ese eee sei oes 226 
Bartramias.2225ce2 2 tosses Sek oes fee See ed 271 
Bartsia wieesec cc esiea edd etek cteec ct ekeeies 245 
Batrachiom:: 2.2 02002006 thwsceee cease ss, 210 
Berbe@ris -55...200 eek sie cc ie eee see 21 
Betulasdcsssis sess cesses vee eiadaetewes 250, 251 
Bidens %23.22500 heed soetechseeseeves ye cee 234 
Bigelovia ...........- 20.02.22 cee eee cece eee 231 
Bik wk Ulla oeesio2s5 ose ee sie ose secs 211 
Blepharipappus. ...........-00-2ceeeeeeeeee 234 
Blepharostoma............-----+2seese- ee 275 
Blitum ....... er cpe hen ea ne Bie use Cue ae 247 
Bobera ......--.---.---- Seo ueea recede cies 234 
Boisduvallia ......-..-..-..00-eceee ee ee ence 226 
Boleliass..3. 202 osieseuss te eee teees sete ee 238 
Botrychiam ....... Meade dee ean cue eae nee 268 
Botrytis .....--.-..ceeee cece cece eee ee cece 276 
Brachyrig.......--02-2-ee-e ce cen terest ee ens 230 
Brachythecium .....---.----+--2ee0+--ee ee: 273 
Brasenia ....... see ee eee ee eee ee cence e ene 211 
Brickellia .........--6- 22-2 se eee cece cece eee 230 
Brodiwa. ... 2... ee eee e eee c cece ence ce er eee 253 
Bromus ...-.----seeee ences eee eee erence ee ee 265 
Bry um ....-..-. 20 eee eee eect cee ee 269, 270, 271, 272 
Buphthalmum ..........----0-- +--+ +0220 234 
COM GS ioc laden ce eke Seek e ne cece eeeses Hees 276 
Calais.....- 22.200 cee cn cece ene e mene ree cee 235 
Calamagrostis ...-..---.--+-+e- eee rere eeeee 261 
Calamovilfa.......------eeee cece ec eee cere ee 261 
Calochortus ...-.------- 02200 cee cece eee e eee 254 
Caly po. ....----- eee e scence cece e eee e eee 251 
Camassia ........-.. 0-2 ee cece ee eee eee eee 253 
Camelina ......--..-- 0c eee c eee ee eee eeeenee 213 
Campanula ........---0 22 eee eee e eee tenes 238 
Camptothecium.......--------+--eeeeereree 273 
Cantua. ....-.... 2. cece ee ec eee eeeeeee ee 241 
Capnoides......------ goieeaues tiles ses ot 211 
Caprifolium .......-+---+++ poeciee ore puaesems 229 
Capsella ..... 22. .-eeeeeeecce nese eetecccenes 218 
Cardamine ......,2----2eeee cence eee e teense 212 
Carduus. ........25--202- 2008 Webaeedetadad 236 
