344 



MORPHOLOGY OF ANGIOSPERMS 



Phaseolus, 179, 208; rnultiflorus, 

 204. 



Philydraceae, 235, 204. 



Phlox Drummondii, 113. 



1'hyllocactus, 108. 



Phragmites, 275. 



Phrymaeeae, 256. 



Phylloglossum, 300. 



Phyllosiphonic, 298. 



Phylogeny of Angiosperms, 280. 



Phytelephas, 178, 231, 262. 



Phytolacca, 179. 



Phytolaccaceae, 103, 179, 244. 



Pinguicula vulgaris, )2. 



Pinus, 160; Strobus, 112, 309. 



Piper, 79, 90, 167, 178; medium, 16S. 



Piperaeeae, 46, 56, 79, 103, 178, 179, 

 201, 242. 



Piperales, 242, 287. 



Pirolaeeae, 253. 



Pirotta, R., 150. 



Pirus Malus, 15, 221. 



Pistia, 178, 192, 195, 201, 263, 275; 

 type of embryo, 192. 



Pistil, 25. 



Pi sum sativum, 204. 



Pittosporaeeae, 246. 



Placenta, 25. 



Plantaginaceae, 102, 106, 176, 258, 

 271. 



Plantaginales, 258, 269. 



Plantago, 269; lanceolata, 107. 



Platanaeeae, 246. 



Plumbaginaceae, 254. 



Poaeites, 275. 



Podophyllum. 53, 282, 313; pelta- 

 tum. 31, 82. 12',. 



Podostemonaceae, 246. 



Polar nuclei, 92: fusion of, 95. 



Polemoniaceae. 103, 256, 269. 



Polemoniales, 258. 



Pollen mother-cell, division of, 126 



Pollen-tube, 143; branching of, 148; 

 development of. 146: discharge of, 

 152: entrance into sac, 151: in 

 cleistogamous flowers, 146; Prop- 

 fen. 148: time between pollination 

 and fertilization, 146. 



Pollination, relation to endosperm, 

 169. 



Pollinium. 132. 



Polyembryony, 213. 



Polygalaceae," 104, 110, 247. 



Polygonaceae, 46, 56, 179, 244, 267. 



Polygonales, 244. 



Polygonum, U4; divaricatum, 94. 



Polypompholyx, 108. 



Polystelic, 2i)7. 



Pontederia, 104, 146, 151; cordata, 



81. 

 Pontederiaceae, 34, 37, 63, 77, 78, 



97, 235, 264, 265. 

 Populus, 52, 133, 277, 278; monilif- 



era, 30, 31; primaeva, 276; trem- 



uloides, 60. 

 Portulaca, 143. 

 Portulacaceae, 244. 

 Potamogeton, 63, 76, 77, 96, 97, 104, 



136, 176, 192; natans, 78; folio- 



sus, 33, 62, 78. 

 Potamogetonaceae, 229, 230, 234, 



263, 265, 274, 275. 

 Potentilla, 18. 

 Pothos longifolia, 148. 

 Potonie, H., 300, 303, 308, Fig. 110. 

 Prantl, K., 8, 56. 

 Primula farinosa, 312. 

 Primulaceae, 19, 103, 254, 269. 

 Primulales. 254, 269. 

 Principes, 231. 

 Pringsheim. X., 288. 

 Proangiosperms, 277, 281, 283, 286. 

 Proembryo, 188. 

 Propfen,*148. 



Prophyllum. Monocotyledons and Di- 

 cotyledons contrasted. 7. 

 Prote'aceae, 131, 243, 268, 278. 

 Proteales. 243. 

 Proteophyllum, 277. 

 Protocorm. 209. 

 Protolemna, 275. 

 Protostelie, 297. 

 Prunus Cerasus, 125. 

 Pseudo-monocotyledons. 206. 

 pscudo-polyembryony, 221. 

 Psilotum triquetrum, 15^. 

 Pteridophytes. anatomy of, 296. 

 Pteris aquilina, 297, 298, 301, 303, 



Fig. 108. 

 Punicacoae. 250. 

 Purkinje. J. K., 34. 

 Pyrethrum, 85, 87; balsaminatum, 



"(11. 

 Pyrola rotundifolia, Jf2; secunda, 



206; uniflora, J f 2. 

 Pyndaceae, 176. 





