300 
181; reproductive parts of, 180, 
181; sporophyte of, 181, 182. 
Animal parasites, 88, 89. 
Animals, 10, 11, 24, 25, 26, 27, 30, 34, 
229, 241, 243, 257, 259, 260. 
Anisocarpe, 213, 214, 215, 219, Figs. 
52, 53. 
Annulariez, 224. 
Annulus (of fern-sporangium), 29, 
135, Fig. 35. 
Antarctic flora, 231. 
Anther, 142, 179, 194, 215, 252, 283. 
Antheridium, 53, 62, 63, 74, 83, 84, 
91, 92, 103, 116, 128, 129, 145, 150, 
151, 160, 163, 164, 170, 180, 181; 
Angiosperms, 180, 181; Archegoni- 
ates, 103; Ascomycetes, 91, 92; 
Chara, 62, 63; Confervaceze, 76; 
Cycas, 163; Cystopus, 84; Ferns, 
128, 129; Isoétes, 150; Pine, 170; 
Red Algz, 74; Riccia, 103; Sela- 
ginella, 145; Water-mould, 83; 
Figs. 9, 12, 14, 20, 21, 24, 26, 33, 38, 
39, 40, 42. 
Anthoceros, 109, 112, 113, 115, 116, 
118, 120, 121, 122, 123, 124, 132, 280, 
290, Figs. 28, 31. 
Anthocerotaceze, 125, 128, 132. 
Anthurium, 186, 247. 
Antipodal cells, 179, 180, 202, Fig. 
44. 
Ants, 260, 261. 
Apetalez, 217. 
Apical cell, 61, 62, 106, 126, 131, 140, 
170; Chara, 61, 62; Equisetum, 
140; Fern, 126; Pine, 170; Figs. 
14, 32, 36, 42. 
Apocarpe ae 
186, 197, 217, Fig. 45 
dons), 217. 
Apocynacez, 215. 
Apophysis, 117, 120, Fig. 30. 
Appalachian Mountains, 232. 
Apple, 182. 
Aquatic plants, 17, 18, 269, 270, 295. 
Aquilegia (see also ‘“ Columbine’’), 
207, 208, 247, Fig. 50. 
Aracez, 186. 
Aralia, Araliacez, 211, 212. 
185, 
; (Dicotyle- 
INDEX 
Arborescent Liliacezw, 191, 192. 
Arborescent Monocotyledons, 268. 
Arbor-vite (Thuja), 168. 
Arbutus, 214, 240. 
Archegoniate, Archegoniates, 16, 
102, 103, 104, 105, 160, 164, 180, 266, 
289, 298. 
Archegonium, 102, 103, 108, 110, 111, 
116, 118, 128, 129, 145, 148, 150, 151, 
159, 160, 163, 164, 169, 170, 180, 289, 
292, Figs. 26, 33, 38, 39, 40, 42. 
Archesporium, 105, 109, 125, 132, 134, 
135. 
Archicarp, 91, 92, Fig. 24. 
Arctostaphylos (see also ‘ Manza- 
nita’’), 274. 
Arethusa, 194, Fig. 47. 
Aril, 165. 
Arisema, 185, 186, Fig. 45. 
Arisarum, 85. 
Arizona, 237, 271. 
Aroid, Aroidez, 185, 186, 187, 197, 
198, 206, 217, 219, 234, 244, 247, 249, 
260, 278, Fig. 45. 
Arrow-head (Sagittaria), 185, Fig. 
45, 
Arum, 186. 
Asclepias, Asclepiadacez (see also 
“Milkweed ’’), 215, 254, 255, Fig. 
57. 
Ascobolus, 91, Fig. 24. 
Ascomycetes (see also ‘‘ Sac-fun- 
gi’’), 90, 91, 92, 93, 95, 96, 97, 98, 
99, 100, 280, Fig. 24. 
Ascospore, 91, 92. 
Ash, 215, 295. 
Aspen, 230. 
Aspidium, 135, Fig. 35. 
Assimilation (see also ‘‘ Carbon-as- 
similation,’”’ ‘‘ Photo-synthesis ’’), 
10, 17, 24, 25. 
Assimilative tissues, 10, 107, 112, 
116, 117, 120. 
Aster, 216. 
Atlantic North America, Flora of, 
234, 235, 237, 238. 
Australia, 147, 271. 
Auxiliary cells (of Rhodophycee), 
74, 75, 78. 
