INDEX. 



975 



Phellogen, 82, 107 (Fig. 90).- 

 Philadelpheae, 661. 

 Philodendron, 93. 

 Phloem, III, 119. 

 Phloem-ray, iii, 131. 

 Phloem-sheath, 440, 468. 

 Phlomis, 564 (Fig. 390). 

 Phoenix, 618 (Fig. 419). 

 Phosphorescence, 723. 

 Phosphorus, 696, 699. 

 Phototactic, 752. 

 Phototonus, 757, 885. 

 Phragmidium, 332. 

 Phycocyanine, 246, 766. 

 Phycoerythrine, 289, 766. 

 Phycomyces, 265, 267 (Fig. 



174). 

 Phycophaeine, 282. 

 Phycoxanthine, 260, 766. 

 Phyllactidium, 329. 

 Phyllanthacese, 661. 

 Phyllantheae, 661. 

 Phylliscium, 328. 

 Phylloclade, 217. 

 Phyllocladus, 158, 217, 509, 



510, 527. 

 Phyllade, 476. 

 Phyllode, 222. 

 Phylloglossum, 462, 463. 

 Phyllome, 150, 157. 

 Phyllophoraceae, 289. 

 Phyllophyte, 151. 

 Phyllopode, 484. 

 Phyllotaxis, 187, 194, 953 



(Figs. 146-1.54). 

 Phyllotaxis of Ligulatae, 476. 

 Physalis, 638. 

 •Physarum (Fig. 173). 

 Physcia, 327 (Fig. 222). 

 Physma, 327 (Fig. 222). 

 Phytelephas, 587. 

 Phytocrene, 653, 950. 

 Phytolacca, 645, 653 (Fig. 



459)- 

 Phytolaccaceae, 136, 645, 



661. 

 Phytophthora, 275. 

 Picea, 517. 

 Pileus, 336, 337. 

 Pilobolus, 267. 

 Pilularia, 31, 451, 455, 457, 



458, 460 (Figs. 33, 318, 



320, 322-324). 

 Pine-apple, 614. 

 Pinus, 25, 30, 72,74, 94, 105, 



124, 508, 527, 533 (Figs. 



23, 24, 32, 60, 78,88, 102, 



103, 346, 356). 

 Piperaceae, 137, 492, 496, 



564, 573, 575, 633, 654, 



656, 951. 

 Piperineae, 655. 

 Piptocephaiidae, 267, 955 



(Fig. 175). 



Pistia, 585, 628. 



Pisum, 52 (Fig. 46). 



Pitcher-like organs, 677. 



Pith, 120. 



Pitted vessels, 24, 116 (Figs. 



25-27, 97). 

 Pittosporeae, 93, 660. 

 Placenta, 452, 492, 574. 

 Placentation, 561, 563. 

 Plagiotropic, 854,954. 

 Plane of insertion, 188. 

 Plane of symmetry, 204. 

 Plantagineae, 643, 658 (Fig. 



447). 

 Plasmodium, 10, 39, 252, 262, 



841, 955- 

 Platanacese, 656. 

 Platanus, 639. 

 Platycerium, 170, 432. 

 Pleomorphy, 232. 

 Pleon, 664. 

 Pleospora, 316. 

 Plerome, 115, 147, 163, 500, 



952 (Fig. 114). 

 Plerome sheath, 115, 124, 



415 (Fig. 96). 

 Pleurocarpous Mosses, 370. 

 Pleurococcus, 246, 253, 329. 

 Plocamium, 289. 

 Plumbagineae, 659. 

 Plumule, 499, 593. 

 Podocarpeae, 527. 

 Podocarpus, 500, 510, 527. 

 Podophyllum, 647. 

 Podospliaera, 238, 312. 

 Podostemoneae, 662. 

 Point of insertion, 188. 

 Polanisia, 605 (Fig. 412). 

 Polar nuclei, 580. 

 Polarised light, 665. 

 Polemoniaceae, 658. 

 Pollen, Development of, 12, 



14, 15, 32, 505, 551, 552 

 (Figs. 12, 34, 374, 375, 



378, 379)- 

 Pollen-grain, 23, 34, 224, 

 487, 491, 498, 506, 514, 



553, 555, 900 (Figs. 36, 

 345, 350, 351, 378, 380, 

 381). 



Pollen-sac, 491, 505, 512, 

 542, 551, 552, 556 (Figs. 



374, 377). 

 Pollen-tube, 33, 515, 522, 



554, 568 (Figs. 35, 345, 

 354, 355, 376, 395). 



Po lination, 494, 583. 

 PoUinium, 557, 913. 

 PoUinodium, 236, 307, 309, 



312, 313, 898 (Figs. 204, 



207). 

 Polyblastia, 329. 

 Polycarpae, 631, 657. 

 Polycarpcllary, 561, 



Polycarpic, 594. 

 Polycarpous, 560. 

 Polychidium, 328. 

 Polycyclic, 601. 

 Polyembryony, 526, 593. 

 Polygala, 136, 612 (Fig. 417). 

 Polygalaceae, 136, 653, 660. 

 Polygamous, 535, 905. 

 Polygamy, 905. 

 Polygonaceae, 493, 565, 662. 

 Polygonatum, 186, 619 (Figs, 



143, 420). 

 Polygonum, 580, 638, 930. 

 Polypodiaceae, 391, 421, 441, 

 Polypodiese, 441. 

 Polysymmetrical, 204, 611. 

 Pblytrichum, 365, 366, 368, 



384 (Fig. 273). 

 Pomeae, 662. 

 Pomegranate, 616. 

 Pontederiaceae, 632. 

 Populus, 637, 640. 

 Pore-capsule, 616. 

 Porlieria, 651. 

 Porocyphus, 328. 

 Portulacaceae, 661. 

 Posterior, 600. 

 Potamogeton, 625, 630. 

 Potamogetoneae, 586, 631. 

 Potassium, 696, 699. 

 Potato, 50, 59. 

 Potentilla, 609, 651. 

 Pottia, 361. 

 Pressure, Effect of, on 



growth, 809. 

 Prickle, 100. 

 Primary bast, 650. 

 Primary cortex,i27,i 30, 532, 



649. 

 Primary endosperm, 582. 

 Primary fibro - vascular 



bundle, 129, 649. 

 Primary meristem, 80, 82, 



137. 

 Primary root, 164, 166. 

 Primary tissue, 80. 

 Primary wood, 531, 650. 

 Primine,57i (Figs. 397, 398). 

 Primordia, 609. 

 Primordial cell, 5. 

 Primordial epidermis, 147. 

 Primordial utricle, 42. 

 Primulaceae, 493, 565, 574, 



644, 659 (Fig. 456). 

 Primulineae, 659. 

 Procambium, no. 

 Products — 



of degradation, 705. 

 of degradation of chloro- 

 phyll, 47. 

 Pro-embryo, 293 (Fig. 191). 

 Pro-embryonic branch, 296. 

 Prolification, 490, 503. 

 Promycelium, 3 30(^Fig. 224). 



