304 INDEXO THE ORDERS AND GENERA. 
PORTULACEE, 
72 
Potamogeton, 
175 
Potentilla, 
6 
Primulacee, 
148 
Primula, . 
149 
Protonema, 
290 
Prunella, * 
147 
Prunus, 
54 
Psora, 
273 
Pteris, 
222 
Pterogonium, 
254 
Ptilota, 
289 
Puccinia, 
296 
Pycnothelia, . 
287 
Pyrethrum, 
114 
Pyrola, 
121 
Pyrus, 
67 
Quercus, 
170 
Radiola, 
34 
Ramalina, 
281 
Ranunculacee, 
1 
Ranunculus, . 
3 
Raphanus, 
17 
Resedacee, . 
17 
Reseda, 
17 
Reticularia, 
295 
Rbinantbus, . 
138 
Rhodiola, 
74 
Rhodomela, . 
288 
Rliodomenia, 
288 
Rhynchospora, 
207 
Rhytisma, 
295 
Ribes, 
74 
Riccia, 
262 
Rosacee, 
54 
Rosa, 
64 
Rubiacee, . 
92 
Rubus, 
57 
Rumex, 
158 
Ruppia, 
178 
Sagina, 
29 
Salicornia, 
156 
Salix, 
164 
Salsola, 
156 
Salvia, 
141 
Sambucus, 
89 
Sanguisorba, 
64 
Sanicula, 
78 
Saussurea, 
104 
Saxifragee, 
75 
Saxifraga, 
78 
Scabiosa, 
96 
Scandix, 
85 
Scirpus, 
207 
Scleranthus, . 
73 
Sclerotium, 
293 
S colope ndrium, 
221 
Scrophularinee,134 
Scrophularia, 
139 
Scutellaria, 
147 
Scbizonema, . 
290 
Scyphophorus, 
286 
Sedum, 
73 
Sempervivum, 
73 
Senecio, 
112 
Sherardia, 
94 
Sibbaldia, 
02 
Silene, 
25 
S inapis, 
17 
Sistotrema, 
292 
Sisymbrium, . 
15 
Sium, 
82 
Smilacee, 
178 
SOLANEE, 
132 
Solanum, 
133 
Solidago, , 
111 
Solorina, 
278 
Sonchus, 
98 
Sparganium, . 
174 
Spathularia, . 
292 
Spergula, 
29 
Spkacelaria, 
289 
Sphaeria, 
293 
Sphaerophoron, 
283 
Sphagnum 
232 
Spiloma, 
270 
Spiraea, 
55 
Splacbnum, 
236 
Sporoclmus, . 
288 
Squamaria 
274 
Stacbys, 
145 
Static e, 
153 
Stellaria, 
30 
Stereocaulon, 
283 
Sticta, 
276 
Stigonema, 
289 
Stratiotes, 
186 
Subularia, 
11 
Symphytum, . 
127 
Tanacetum, . 
108 
Taxus, 
172 
Teesdalia, 
10 
Tetraphis, 
236 
Teucrium, 
143 
Thalictrum, . 
1 1 
Thelephora, . 
292 ! 
Tklaspi, 
9 ' 
Thymus, 
142 
Tiliacee, 
35 
Tilia, 
35 I 
Timmia, 
252 
Tofieldia, 
181 
Torilis, 
84 
Tormentilla, . 
62 
Tor tula, 
245 
Tragopogon, 
97 
Trentepoblia, 
290 
Trichostomum, 
241 
Trientalis, 
152 
Trifolium, 
46 
Triglochin, 
173 
Triodia, 
201 
Triticum, 
206 
Trollius, 
5 
Tuber, ' 
293 
Tubercularia, 
296 
Tulipa, 
180 
Turritis, 
14 
Tussilago, 
110 
Typha, 
173 
Ulex, 
93 
Ulmacee, . 
162 
Ulmus, 
162 
Ulva, 
289 
Umbellifere, 
78 
Umbilicaria, . 
279 
Urceolaria, 
270 
Uredo, 
297 
Urtice, 
161 
Urtica, 
161 
Usnca, 
281 
Utricularia, 
147 
Vacciniee, . 
118 
Vaccinium, 
118 
Valerianee, 
95 
Valeriana, 
95 
Variolaria, 
270 
Vaucheria, 
289 
Verbascum, 
140 
Veronica, 
134 
Verrucaria, 
269 
Viburnum, 
90 
Vicia, 
49 
Vinca, 
123 
Violacee, 
18 
Viola, 
18 
Viscum, 
89 
Weissia, 
237 
Woodsia, 
218 
Zostera, 
178 
Zygodon, 
247 
Zygnema, 
289 
