INDEX TO GENERA. 



611 



Bubus Idaeus, 136. 



imbricatus, 139. 



incurvatus, 139. 



infestus, 144. 



Koehleri, 144. 



latifolius, 139. 



Leesii, 137. 



Lejeunii, 145. 



leucostachys, 140. 



Lindleianus, 138. 



macrophyllus, 141, 

 142. 



mucronulatus, 142. 



mutabilis, 145. 



pallidus, 144. 



plicatus, 137. 



praeraptorum, 143. 



pubigerus, 139. 



purpureus, 147. 



pygmceus, 143. 



pyramidalis, 146. 



Eadula, 144. 



ranaosus, 139. 



Reuteri) 146. 



rhamnifolius, 139. 



rosaceus, 143. 



rotundifolius, 146. 



rudis, 144. 



Salteri, 140. 



saltuum, 146. 



saxatilis, 136. 



scaber, 143. 



Schlechtendalii, 

 142. 



Sprengelii, 143. 



suberectus, 137. 



thyrsoideus, 140. 



tuberculatus, 148. 



umbrosus, 141. 



villicaulis, 141. 

 Euppia, 422. 

 Bumex, 357. 

 Buscus, 403. 



Sagina, 69. 

 Sagittaria, 410. 

 Salicornia, 353. 

 Salix, 374378. 



acuminata, 375. 



alba, 374. 



ambigua, 376. 



arbuscula, 377. 



Salix aurita, 376. 



caprea, 376. 



cinerea, 375. 



ferruginea, 375. 



Forbyana, 375. 



fragilis, 374. 



Grahami, 378. 



herbacea, 377. 



lanata, 377. 



Lapponum, 377. 



laurina, 376. 



myrsinites, 377. 



nigricans, 376. 



pentandra, 374. 



phylicifolia, 376. 



purpurea, 375. 



repens, 377. 



reticulata, 377. 



rubra, 375. 



Sadleri, 377. 



Smithiana, 375. 



tenuifolia, 376. 



triandra, 375. 



undulata, 375. 



viminalis, 375. 

 Salsola, 351. 

 Salvia, 302. 

 Sambucus, 207. 

 Samolus, 339. 

 Sanguisorba, 154. 

 Sanicula, 186. 

 Saponaria, 64. 

 Sarothamnus, 103. 

 Saussurea, 240. 

 Saxifraga, 179. 

 Scabiosa, 219. 

 Scandix, 205. 

 Scheuchzeria, 412. 

 Schcenus, 436. 

 Scilla, 402, 403. 

 Scirpus, 439. 

 Scleranthus, 173. 

 Scolopendrium, 520. 

 Sclerochloa, 488. 

 Scrophularia, 293. 

 Scutellaria, 321. 

 Sedum, 1^5. 

 Selinum, 201. 

 Senecio, 255, 256. 

 Serratula, 240. 

 Seseli, 199. 

 Sesleria, 479. 



Setaria, 472. 

 Sherardia, 215. 

 Sibbaldia, 131. 

 Sibthorpia, 298. 

 Silaus, 200. 

 Silene, 64. 

 Simethis, 403. 

 Sinapis, 48. 

 Sison, 190. 

 Sisymbrium, 45. 

 Slum, 192. 

 Smyrnium, 187. 

 Solanum, 284. 

 Solidago, 255. 

 Sonchus, 227. 

 Sparganium, 428. 

 Spartina, 472. 

 Spartium, 103. 

 Specularia, 266. 

 Spergula,71,72,73,77. 

 Spergularia, 74. 

 Spiraea, 129. 

 Spiranthes, 381. 

 Stachys, 317, 318. 

 Statice, 340. 

 Stellaria, 77. 

 Stratiotes, 408. 

 Suaeda, 352. 

 Subularia, 37. 

 Symphytum, 326. 



Tamus, 406. 

 Tanacetum, 260. 

 Taraxacum, 236. 

 Taxus, 380. 

 Teesdalia, 31. 

 Teucrium, 311. 

 Thalictrum, 1. 

 Thesium, 362. 

 Thlaspi, 30. 

 Thymus, 307. 

 Tilia, 87. 

 TillEea, 175. 

 Tofieldia, 407. 

 Tordylium, 202. 

 Torilis, 203. 

 Tragopogon, 220. 

 Trickomanes, 520. 

 Trichonema, 307. 

 Trientalis, 335. 

 Trifolium, 109. 

 Triglochin, 412. 





