INDEX 



Nephroma 173 



helveticum Ach 182, 201 



lsevigiatum Ach 171. 182, 202 



lsevlgatum var. partle Nyl. . 202 



tomentosum (Hoffm.) Kbr. 



171, 177, 202 



Nereocystis 5, 145, 160, 291 



Nitella 79, 82 



batrachosperma 79-82 



flexilis 81 



tenuissima Desv 79 



Nostoe 77 



Notbocalais cuspidata (Pursh) 



Greene 268 



O 



Octodiceras julianum (Savi) Brid. 



113, 114 



Odontoschisma Macounii (Aust. ) 



Umderw 141, 143 



Onagracea? 266 



Onoclea sensibilis L 254 



struihiopteris (L. ) Hoffm. 254 



Opegrapha quaternella Nyl 231 



varia(PERS.) Fr 231 



Opliioelossacese 248, 260 



Ophioglossum vulgatum L 248 



Orchidaceae 263 



Orthotrichum 112 



anomalum Hedw 116 



porteri Aust 113, 116 



schimperi Hamm 113, 116 



Oryzopsis asperifolia Michx 90 



canadensis (Poir. ) Torr. . . 90 



junrea (Michx.) B.S.P. . . . 90 



melanocarpa Muhl 90 



Oscillatoria 47 



Osmorrhiz'a brevistylis DC 239 



longistylis DC 240 



Osmunda cinnamomea L 250 



claytoniana L 249 



regalls L 249 



Osmundacese 249 



Oxalis 173 



Oxypolis rigidior (L.) Rap.....! 242 



P 



Panax 327 



quinquifolium L. 238 



trifolinm D 238 



Panicularia americana (Torr.) 



MacM 102 



borealis Nash 102 



canadensis ( Michx. ) Kuntze 



101 



fmitans (L.) Kuntze 102 



nervata (Willd.) Kuntze. 



101, 261 



torreyana (Spreng.) Mer- 

 rill 101 



Panicurr. 83 



agrostoides Spreng 85 



angustifolium Ell 86 



autumnale Bosc 85 



boreale Nash 86 



capilla.re L 85 



cognatum Schultes 85 



consanguineum S. Wats. ... 86 



crus-galli L 84 



crus-galli hispidum Torr... 84 



depauperatum Muhl 85 



dichotomum L. ■. . . 86 



glabrum Gand 84 



implicatum, Scribn 86 



latifolium Walt 87 



leibergil ( Vasey) Sckibn.86, 260 



linearifolium Scribn 85, 260 



pauciflorum A. Gray 86 



perlongum Nash 85 



porterianum Nash 87 



pubesce7is A. Gray 86 



sanguinale L 84 



scribnerianum Nash 86 



unciphyllum Trin 86 



virgatum L 85 



ivalteri Pursh 84 



werneri Scribn 86 



xantbophysum A, Gray.... 87 



Pannaria 183 



langjinosa (Ach.) Kbr.... 



178, 179, 204 



lepdiota Th. Fr 204 



leucosticta Tuck 183, 204 



microphylla (Sw.) Delis... 



176, 204 



rubiginosa (Thunb. ) Delis 



183, 204 



rubiginosa (Thunb.) Delis, 



var. conoplea Fr 183, 204 



Papilionaceae 265 



Parmelia 179, 184, 230 



borreri Turn 196, 225, 230 



borreri Turn. var. rudecta 



Tuck 177, 182, 196 



cape rata (L.) Ach 



176 177, 180, 197 



conspersa (Ehrh.) Ach. 174, 198 



conspurcata (Schaer. ) Wa- 



inio 177, 179, 186, 197 



crinita Ach 196 



olivacea (L.) Ach 



181, 186, 187, 197 



olivacea (L.) Ach. var. 



prolixa Ach 174, 197 



perforata (Jacq.) Ach.... 196 



perlata (L.) Ach 176, 195 



perlata (L. ) Ach. var. 



ciliata (D.C.) Nyl.. 176, 196 



physodes (D.) Ach.177, 181, 197 



saxatills (L.) FR..180, 186, 196 



saxatilis (L. ) Fr. var. pan- 



niformis Ach 174, 197 



saxatilis (L.) Fr. var. sul- 

 cata Nyl 196 



tiliacea (Hoffm.) Neck.... 



186, 196 



Parthenium integrifolium L 



258, 259, 268 



Pastinaca sativa L 243 



Pellsea atropurpurea (L.) Link.. 250 



-stelleri (Gmel.) Watt 250 



Pellia 141 



Peltigera 173, 174, 179, 181 



aphthosa (L.) Hoffm 



177, 186, 189, 202, 231 



canina (L.. ) Hoffm 



. ..177, 185, 188, 189, 203, 225 

 canina (L. ) Hoffm. var. 



leucorrhiza Flk 185, 203 



canina (L.) Hoffm. var. 



sorediata Schaer 203 



canina (L.) Hoffm. var. 



spongiosa Tuck. 170, 186, 203 

 canina (L.) Hoffm. var. 



spuria Ach 203 



horizontalis (L.) Hoffm... 



186, 202 



malaeea (Ach) Fr 



1S8, 189, 202 



polydactyla (Neck.) Hoffm. 202 



