290 



INDEX. 



Perianth, polymerous, 129; gamo- 

 phyllous, 250. 



Feronospora, caiTse of petalody, 1 75. 



Petal, flowers axillary to, 21 ; division 

 of, 69 ; phyllody and virescenee 

 of, 137-139; frondesoent, 138; 

 squamody of, 139 ; sepalody of, 

 139-142, 276 ; labelliform, 143-146; 

 spurred, 146-148, 237; spurless, 

 148 ; staminody of, 153-160 ; fused 

 ■with "column," 160; carpellody 

 of, 160-161 ; morphological nature 

 of, 172-173, 205; derived from 

 carpels, 204-205 ; adnation to 

 sepal, 234-235, 242, 259, to 

 "column," 236, to stamen, 236; 

 cohesion of, 249-253 ; suppression 

 of, 249, 253-254. 



Petalody, of stamens, 78, 116, 172- 

 181, 200, 276; of calyx, 135-136, 



■ 171. 



Petalomania, 77, 103. 



Petunia, double flowers, 78. 



Peyritsch on pelory, 149. 



Phajus, stamens changed into labella, 

 , 145 ; staminody of petals, 160. 



Fhaseolus, extra carpels, 92, 258 ; 

 fusion of carpels, 258. 



Pheasant's-eye, fasciated flower, 

 46. 



Philadelphus, staminody of calyx, 

 136. 



Philydraceae, structure of perianth, 

 246. 



Phlox, leaf-enations, 162 ; abnormal 

 leaves, 200. 



Phoenix, hermaphodite flower, 97. 



Phyllody, of sepals, 13, 126; of 

 ovule, 91, 195-203 ; of stamens, 

 113; of entire flower, 123; of 

 corolla, 137-139 ; of androecium, 

 161; of gynceceum, 193-203; of 

 sporophyll, 209. 



Phyllomania, 124. 



Phyllonoma, epiphyllar flowers, 234. 



Phyllotaxy, change in, 61-62 ; spiral, 

 103, 259. 



Phyllotheca, ancestor of Equisetum, 

 213. 



Phytoptus, 40; cause of phyllody, 

 127. 



Picea, axillary proliferation, 22. 



Pine, Norfolk Island, proliferation 

 in, 2. 



Piue-apple,proliferated inflorescence, 

 6. 



Pint, axillary proliferation, 21. 



Pinus, axillary proliferation, 21-22 ; 

 ovuliferous stamens, 192. 



Pistil, virescent, 113, 270; primitive- 

 type, 116; syn- and apooarpus,. 

 116; formed from androecium, 

 190; phyllody of, 193-203; dia- 

 lysis of, 195 ; change from 

 " inferior " to " superior," 195 ; 

 squamody of, 203 ; staminody of, 

 209 ; change from " superior " 

 to " inferior," 235 ; adhesion of 

 stamens to, 236-237 ; bicarpellary, 

 245, 259 ; suppression of, 258 ; 

 syncarpous, 258 ; meiomerous, of 

 Eanunculacese, 259. 



Pisum, carpellody of calyx, 137 ; 

 increase and fusion of carpels,. 

 258. 



Pitcher-plant, conformation of leaf,. 

 200. 



Plaoentation, free central, 186-187; 

 primitive marginal, 195. 



Plagius, homomorphic florets, 150. 



Plantago; proliferated spike, 3,- 

 flower, 6, 32. 



Plantain, proliferated spike, 3, 6, 32. 



Platanthera, extra, spurs, 134 ; spur- 

 pelory, 146 ; staminode reverted 

 to stamen, 182. 



Platycerium, sterile fronds fertile,. 

 212. 



Pleiotaxy, 53, 59. 



Plum, double fruit, 50. 



Plumbagineae, androecium, 79. 



Plurisporangiate sporophyll, 101. 



Podocarpe^, ovuliferous scale, 23. 



Podopterus, structure of perianth, 

 242. 



Pogonia, reappearance of stamens,. 

 82. 



Pollen in nucellus, 209. 



Pollen-sacs, increase in number, 102. 



Polyadelphy, 255. 



Polyandry, 85. 



Polyanthus, 3 ; fasciated flower, 44^ 

 46 ; phyllody of calyx, 126. 



Polyoarpicae, 141, 243. 



Polygala, petalody of calyx, 135. 



Polygo7ium, leaf-enations, 162, 168- 

 170, 174 ; structure of perianth, 

 242. 



Polymery, due to svnanthy, 56, 238- 

 239 ; of corolla, 72 ; of calyx, 129, 

 203 ; of pistil, 203 ; of androecium, 

 257. 



Polypetalous flowers, 73, 112. 



Polyphylly, 59, 60. 



Pome, nature of, 12-14, 118, 139, 

 189. 



Pomeae, syncarpovis ovary, 258. 



Poplar, polyandry, 85. 



