Helonias, 295. 
Helianthella, 305. 
Helianthemum, 232, 482, 496. 
Helianthus, 2, 9, 12, 17, 235, 416, 484. 
Heliconia, 343. 
Heliopsis, 5, 6, 12, 17, 484. 
Helleborine, 33, 35. 
Helminthostachys, 357. 
Helonias, 263. ~ 
Hemiarcyria, 81, 304. 
Hemicarpha, 414. 
Hemidyctium, 492. 
Hemitones, 93. 
Hepatica, 60, 443- 
Heracleum, 234. 
Herberta, 378. 
Heritiera, 472. 
Herniaria, 282. . 
Heterodictyon, 79. 
Heterophyllza, 430. 
Heterosporium, 224. 
Heterotrichia, 81. 
Heuchera, 476, 481, 495. 
evea, 499. 
Hexalectris, 186, 188, 192. 
Hibiscus, 52, 230, 341. 
Hicoria, 178, 281, 413. 
Hieracium, 6, 53, 63, 120, 1775 235» 342, 484. 
Hoffmannia, 348. 
Hoffmanseggia, 223. 
Hohenbergia, 275. 
Holcus, 201, 239, 475, 478- 
Holomitrium, 378. 
Homalocenchrus, 197, 239, 478. 
Hordeum, 207. = 
Houstonia, 253, 474, 476, 483. 
Hufelandia, 497. 
Humulus, 237. 
Hyalotheca, 244. 
Hydrangea, 62, 481. 
Hydrastis, 225, 475, 480. 
Hydrocotyle, 62. 
Hydropeltis, 60. 
Hymenocallis, 470. 
Hymenophyllum, 436. 
Hyophila, 378. 
Hypericum, 57, 61, 223, 232, 482: 
Hypheene, 262. 
Hypolepis, 27. 
Hypopitys, 64. 
_ Hypnea, 109. 
Hypnum, 274. 
Hypocherris, 294. 
Hypoxylon, 296. 
Hystrix, 66, 207, 342, 475, 478. 
Icacorea, 377. 
llex, 58, 59, 61, 228, 233, 362, 414, 482. 
Ilysanthes, 64, 483. 
Impatiens, 61, 230, 233, 409, 482. 
Incolaria, 303. 
Inocybe, 264. 
Inula, 5, 6, 8, 16. 
loxylon; 163. 
Ipomeea, 25, 27, 53, 85, 258. 
Iris, 56, 66, 228, 236, 237, 376, 467-_ 
nthus, 483. 
Ischnosiphon, 268, 415. 
Isopyrum, 60, 305. 
um, 274. 
Ivesia, 94. 
uglans, 65, 165, 300, 340. 
175. 
i 
Lotus, 493, 496- 
eas Ludwigia, 234, 482. : 
; é & 
Juncus, 59, 66, 238, 242, 409, 453» 4775479» 499- 
ungermannia, 86, 308, 309,310. 
1X 
Juniperus, 46, 366, 452. 
Jussiza, 174, 482. 
Kalmia, 64, 135, 235, 482. 
Keerlia, 493. 
Keeleria, 202. 
Keellia, 65, 482. 
Klotzschia, 497. 
Krugia, 414. 
Krynitzkia, 269. 
Kuhnia, 173. 
Kyllingia, 479. 
Lachnanthes, 472. 
Lactuca, 1, 3, 5,6, 15, 17, 53, 63, 235, 484. 
Laminaria, 229. 
Lamproderma, 77, 80. 
Laphamia, 413. 
Laportea, 480. 
Lappula, 175, 443- 
Lapula, 175. 
Lathyrus, 56, 61, 133, 223, 230, 233, 262, 274. 
Laurus, 46, 345. 
Lecania, 85. 
Lecanora, 351, 352, 354, 355- 2 
Lecanosperma, 430, 434. 
Lechea, 61, 475, 482. 
Lecidea, 85 35%, 355. 
Leersia, 27. 
Legouzia, 175. 
Leiophyllum, 85. 
Lemna, 238 : 
Lenzites, 296. 
Leonurus, 54, 236. 4 
Lepidium, 52, 61, 223, 232, 240, 413, 493. 
Lepidozia, 307, 308, 310, a 
Lepiota, 264. t 
Lepismium, 268. 
} Leptodontium, 378. 
Leptogium, 354. ' 
Leptorchis, 32, 34, 65, 476, 480. 
Leptostachya, 175. 
Leptosyne, 88, 94, 416. 
Leptosphezria, 442. 
[ eptotrichum, 273. 
Leptotznia, 88 
Leskea, 274. 
za, O, 174, 230, 294, 481, 499- 
Leuconymphea, 175. 
Leucampyx, 94. 
Leucobryum, 87. 
Leucophyllum, 340. 
Leucothoé, 166. 
Lewisia, 135. 
Liabum, 378. 
Liatris, 496. 
Licea, 79. 
a 409, 496. 
Lilza, 340. 
Lilium, 66. 
Limodorum, 33, 34, 35, 121, 122, 186, 189, 192. 
Limnanthemum, 230, 236. 
Linaria, 54, 236, 252, 443- 
Linbladia, 79. 
Lindera, 295, 480. 
Linnza, 409. 
Linum, 239, 233, 481. 
Liparis, 186, 187, 192. 
Liriodendron, 60, 169, 345. ; 
Listera, 31, 32, 34, 185, 186, 188, 190, 191, 192. 
Lithospermum, 254. ; 
Litsza, 30. ‘ 
Lobelia, 63, 231, 235, 269, 347) 477» 483, 484. 
Leeflingia, 343, 344. 
Lolium, 206. 
Lonicera, 162, 167, 223. 
Lo » 85. ee 
