Heliotiella, 162. 
Heliotropium, to. 
Helotium, 236. 
Helleborine, 63. 
Helleborodes, 53. 
Helxine, 62. 
Hemionitis, 134- 
Hendersonia. 198. 
Henrya, 97. 
Hepatica, 376. 
Heracleum, 183, 187, 242, 335. 
Heritiera, 63. 
Herpestis, 61, 193, 194- 
ee, 70. 
esperis, 54. 
Heteranthera, 64. 
Heteromeles, 280. 
Heterothalmus, 4. 
Heterothecium, 249. 
Heuchera, 258. 
Hibiscus, 86, 91,.145, 232, 312, 387- 
Hicoria, 30, 63, 332. 
_ Hieracioides, 59. 
Hieracium, 45, 89, 146,185, 243, 266, 341, 349,371- 
_ Hierochloa, 386. 
Hierochloé, 89. 
Hilaria, 99. 
Hippagrostis, 64. 
Hippocastaneum, 267. 
Hippophoé, 174. 
Hirtella, 235. 
Hoffmanseggia, 345- 
Hohenbergia, 68. 
Holodiscus, 57. 
Homalocenchrus, 64. 
- Hordeum, 46. 
Hortia, 235. 
Houstonia, 344, 346, 385. 
el athe 320. . 
_ Hydrangea, 85, 344, 385- 
- Hydrogonum, — 
ae Jace oe 
_ Hydrophyllum, 198, 376. 
_ Hydrosilicon, tn . 
_ Hylocomium, 248, 275. 
Hymenochete, 236. 
_ Hymenopappus, 59. 
_ Hypericum, 29, 94, 240, 242, 258. 
 Hypnum, 24, 180, 194, 248. 
_ Hypocheeris, 371. 
_ Hypolyssus. 72. 
 Hyptis, 62. 
¢ shila, 70. 
_ _Hystrix, 64, 385. 
lonidium, 54. 
 Toxylon, 62, 332. 
Fe Ipomeea, 45, 86, 142, 233, 384. 
 Sresine, 86. 
Tria 
: yrum, 69, 258. 
ia? um, 248, 
Iva, 46, 83. 
he ieee 
Juglans, 30, 376. 
Juncodes, 64. 
Juncus, 245, 293, 3992 334, 336- 
Jungermannia, 9, 198, 279, 300. 
Juniperus, 134. 
Kalmia, 60, 243. 
Kantia, 99, 246, 270, 300. 
Kelloggia, 157- 
Knorria, 159. 
Keellia, 62, 385. 
Koenigia, 244. 
Kosteletzka, 55. 
Kosteletzkya, 233. 
Kraunhia, 56. 
Krigia, 58, 385. 
Krynitzkia, 94, 193. 
Kuhnistera, 56. 
Kunzia, 345- 
Laboulbenia, 233. 
Lachnanthes, 63. 
Lachnocladium, 277. 
Lacinaria, 59, 385. 
Lactuca, 140. 
Ladanum, 62. 
Leestadia, 2, 86. 
Lagenaria. 95. 
Lagerstroemia, 59. 
Lamarckia, 64. 
Lamium, 146. 
Lansbergia, 235. 
Lantana, 62. 
Laplacea, 30. 
Laportea, ig 
Lappula, 61. 
Laurophyllum, 343. 
Laurus. 95, 232, 235. 
Lasianthus, 54. 
Latania, 138. 
Lathyrus, 94, 210. 
Larrea, 69. 
Lecanora, 248, 250. 
Lechea, 70, 279. 
Ledum, 335- 
Leersia, 64, 318. 
Leguminosites, 343. 
Lejeunea, 258, 299- 
Leontopodium, 148. 
Leonurus, 145, 381- 
Lepachys, 30, 383, 385- 
Lepargyrea, 62. 
Lepidium, 45, 54, 82, 83, 144- 
Lepigonum, 240. 
Lepidodendron, 159, 197. 
Lepidophlois, 159. 
Lepidospartum, 196. 
Lepidostrobus, 159- 
Lepidozia, 246. 
-plernceuy 69. 
eptarrhena, 241. 
' Leptobarbula, 275- 
Leptochloa, 64- 
Leptogonium, 248. 
Leptodontium, 275. 
Leptorchis, 63, 385. 
Leptospheria, 85. 
Leptostachya, 62. 
Leptosyne, 384. 
Lerchea. Ee 
332. 
Liabum, 265. 
Liatris I, 385. 
Hse so ® 
