534 



INDEX 



Haematococcus lacustris, 240. 

 Hairy-cap moss, 347. 

 Halophytes, 458. 

 Hanging "moss," 301. 

 Haustoria, 136, 137, 285, 289, 309. 

 Haustorium (a), 136, 137, 283, 285, 



289, 309. 

 Hawk weed, 449. 

 Hazelnut, 207. 

 Head, 150, 151, 153, 166. 

 Heart wood, 65. 

 Heat, 452. 

 Heath family, 445. 

 Hedgehog fungi, 322, 326. 

 Helianthus, 450. 

 Helianthus annuus, 166. 

 Helianthus tuberosus, 24, 450. 

 Helicoid cyme, 151, 152. 

 Heliotropism, 30. 

 Hellebore, American white, 84. 

 Hemp, 432-434. 

 Henequen plant, 435. 

 Hepatica, 334. 

 Hepatica hepatica, 334. 

 Hepatica triloba, 334. 

 Hepaticae, 229, 334~345- 

 Hercules club, 328. 

 Hermaphrodite flowers, 145, 259. 

 Heterocysts, 225, 256. 

 Heteroecism, 273. 

 Heterosporous, 379, 386. 

 Heterospory, 402, 417. 

 Heterothallic, 278, 279, 337, 347, 



379, 382. 

 Hibiscus, 443. 

 Hickory nut, 208. 

 Hieraceum, 449. 

 Hilum, 6, 9, 416. 

 Homosporous, 379. 

 Homothallic, 279, 347. 

 Honey guides, 188, 197. 

 Honey locust, 440. 

 Honeysuckle family, 448. 

 Hordeum hexastichon, 426. 

 Hordeum vulgare, 426. 

 Horned liverworts, 229, 343, 344. 

 Horse chestnut, 71. 

 Horsetails, 229, 373-376. 

 Host, 134, 308. 

 Houstonia, 190, 448. 

 Huckleberries, 445. 

 Huckleberry family, 445. 

 Humus, 125, 131, 140. 

 Hybrids, mendelian, 489-491. 



Hydnaceae, 329. 

 Hydrangea leaf, 77. 

 Hydrodictyon, 241. 

 Hydrogen, 20, 108-110, 114, 124. 

 Hydrophytes, 458, 460. 

 Hygrophytes, 458. 

 Hymenium, 323, 324. 

 Hypha, 273, 305. 

 Hypocotyl, 7, 8, 10, 12, 16. 

 Hypogynous, 147, 157. 

 Hyponastic, 86. 

 Hyponasty, 86. 

 Hypothecium, 301. 



Iceland "moss," 303. 



Imbricate pattern, of leaves, 88. 



Impatiens, 62. 



Impatiens, fulva, 223. 



Imperfect flowers, 145, 190. 



Imperfect stage, 288. 



Incomplete flower, 145. 



Incumbent, 158. 



Indehiscent, 206-208. 



Indeterminate, 55, 148. 



Indian corn, 427. 



Indian corn, leaf of, 78, 172, 177. 



Indian corn, races of for oil and 



starch, 496. 



Indian lotus, spiral ducts of, 60, 61. 

 Indian pipe plant, 92, 93, in, 138. 

 Indian turnip, 50, 178. 

 Indusium, 361. 

 Inferior, 147. 

 Inflorescence, 148. 

 Inorganic compounds, 124. 

 Insect- pollinated, 183. 

 Insectivorous plants, 96. 

 Integument, 200-202, 204, 393, 400, 



414-416. 



Internode, 56, 248. 

 Introrse, 158. 

 Inulin, 24, 35. 

 Involucre, 167, 207, 208. 

 Irish moss, 265. 

 Iron, 124, 125. 

 Irregular, 146, 188. 

 Irritability, 95. 

 Isoetes, 380-382, 418. 

 Isoetineae, 229, 380. 

 Ivy, 46, 47. 



Ivy, climbing poison, 34. 

 Ivy, English, 34. 

 Ivy, Japanese, 46. 

 Ivy (Japanese), epidermis of leaf, 89. 



