Index 



Inflorescence, 39, 40 



autoicous, 48 



dioicous, 48, 49 



monpicous, 48 



paroicous, 48 



synoicous, 48 

 Involucre, 94 (cut), 95 

 Isidiophorous, 82 



Jaundice, 20 

 Jungermania, 132 

 Juniper Hairy-cap, 254 

 Jumper inum, 249 



Key to genera of Polytrichaceae t *3Q 



to species of Genus Polytrichum, 250 

 King George III., 195 



Lake Tear of the Clouds, 1 1 1 



Lamellae, 35, 43 (cut), 44 (cut), 45 (cut), 239 



(cut), 240 (cut) 

 Lapland, 27 

 Larcom, Lucy, 16 



Leaf apex prolonged into an awn, 32, 34 (cuts) 



cell-structure in hepatic, 100 (cut) 



cross section of, 1 24 



mf ~sin entire, 33 (cut) 

 serrate, 33 , 34 (cut) 



structure of, 43 



with antheridium, 125 

 Leaf -green, 12, 32, 62, 67 



transparence of, 34 



variation of, 3 1 



work of, 33 



Leafy Diphyscium, 259 

 Leafy Hepatics, 99 



mosses, 30 

 Leaves defined, 36 (cut) 



frondiform, 194 (cut) 



modified to form gemmae, 60 



producing protonema, 60 



scale-like, of Equisetums, 70 



variation of, 31 



with root hairs, 58 

 Lecanora, earth bread, 20 



esculenta, 20 



manna of Israelites, 20 

 Leptobryum pyriforme, 217 



collum, 58 



spore-case, 58 

 Leptotrichum, 171 

 Leucobryum, genus, 34, 161 



colour due to, 161 



vulgar e, 163 



portion of peristome, 37 (cut) 

 section of open leaf, 35 (cut) 



closed leaf, 35 (cut) 

 terminal leaves with root-hairs, 58 



(cut) 



young plant, 58 (cut) 

 Lichens, absorbing power of, 26 



advance in exact knowledge of, 21 



algae distributed, 26 



in definite layers, 26 



alliance for mutual benefit, 22 



as drugs, 20 



bearded, 80 



Blistered UmbiUcaria, The, 84 



blue-green felt-like plates, 25 



branching like corals, 8 



Brown-fruited Cup Cladonia, colour plate 

 XII., 89 



cause of neglect of, by early botanists, 19 



Cetraria Iskmdica, colour plate VII., 79 

 Jacunosa, 79 



check against torrents, 16 



chemical action of, 13 

 work of, 12 



Lichens, 



Cladonia carnucopioides, 90 



cristatella, colour plate XII., 89 

 fimbriata, plate IX., 89 

 pyxidata. colour plate XII., 89 

 rangiferina, colour plate VIII., 90 

 colour due to, 23 

 common ancestral type of, 22 

 condense moisture, 4 

 constant hearted, 10 

 Cornucopia Cladonia, The, 90 

 cortical layer of, 80 (cut) 

 cortex of, 87 

 cottony, 80 (cut) 

 debris of, a source of humus, 14 

 delicate threads prying rock, 13 

 dissolving rock, 13 

 distribution, i, 7 



Dog Peltigera, The. colour plate VII., 86 

 dual organism, 22 

 dye industry, 21 

 encrusted, 28 

 endurance of cold, 7 

 exact relation of one to another, 26 

 fancied resemblance to injured parts, 20 

 fan-like greenish-yellow, 24 

 first growths, 4 



first plants to appear on soil, 16 

 forerunners of rock-loving mosses, 4 

 fossil evidence of, 16 

 from spores of fungus, 24 

 fruits of fungus, 24 

 fruits in flattened coloured disks, 8 

 gelatinous, 26, 28 (cut) 

 genera and species, 77 

 gonidial layer of, 87 

 growing flat or ruffled, 8 

 Hair-like Usnea, The, 81 

 how they are made, 24 

 how to collect, 73 



to dissect, 73 



to know them, 8 



to preserve, 73 



to study, 73 



Iceland Moss, colour plate VIII., 79 

 ideal section to show apothecium, 27 

 in history, 14 

 in moist atmosphere, 26 

 isidiophorous, 82 

 magnified portion of, 23 

 manufacturing plant food, 13 

 mechanical action of, 13 



work of, 12 

 meek creatures, 4 

 "mock the marks on a moth," 10 

 not an individual plant, 22 

 origin and nature of, 22 

 Parmelia, genus. Si 



caperata, 83 



conspersa, colour plate V., 82 



perlata, plate VI., 83 



physodes, var. vittata, plate V., 82 



saxatilis, plate XV., 83 

 Peltigera, genus, 85 



apthpsa, 85, 86 



canina, colour plate VII., 86 



polydactyla, 86 



venosa, 85 



Physcia leucomela, colour plate VIII., 84 

 pioneers, 17 



among plants, 17 

 pith, layer of, 87 



Pitted Cetraria, The, plate II., 79 

 place in plant kingdom, 23 

 "plodding," 13 

 poem to R. M. E., 21 

 Red-fruited Cup Cladonia, The, 90 

 Reindeer, The, colour plate VIII., 90 



used for bread, 27 

 resembling puff-ball, 25 



319 



