INDEX 



273 



Perithecium, 238 



Permanent mounting, 32 



Peronosporeoe, 241 



Petiole, 76 



Phoeophycece, 201 



Phanerogam se, 34 



Phaseolus, root of, 94 



Phellogen, 54, 60 



Phelloderm, 54, 60 



Phloem, of Sunflower, 40, 43 ; of 



Elm, 57, 60, 65 ; of Cucurbita, 



70 ; of Pine, 136 

 Phloem-parenchyma, 40 

 Phytophthora, 243 

 Piliferous layer, 87, 89, 104, 168 

 Pinus sylvestris, 134, &c. 

 Pith, of Sunflower, 37, 44 ; of Elm, 



56 



Pits, bordered, 44 

 Pitted vessels, 44, 61, 96 

 Plasmolysis, 21 

 Plerome, 68, 93, 106 

 Plumule, 85, 123, 126 

 Pollen, 109, 118 

 Pollen-grains, germination of, 1 1 7, 



146 



Pollen-sacs, 117, 146 

 Pollen-tube, 118, 120, 147 

 Pollinodium, 238 

 Polyembryony, 149 

 Polysiphonia, 197 

 Poly trie/mm, 179 

 Potash solution, 19, 29 ; clearing 



by, 31 



Potato, starch of, 28, 129 



Primary root, 85 



Primrose (Primula], flower of, 



no 



Procambium, 49 

 Proembryo, 214 

 Promycelium, 232 

 Prothallus of Fern, 19, 174 

 Protonema of Moss, 188 

 Protoplasm, 18, 27 ; continuity of, 



199 ; movements of, 22 

 Protoxylem, 61, 104, 136, 153, 



163 



Prnmis Padus, flowers of, no 

 Pteridophyta, 150 



Pteris, stem, 163 



Puccinia, 231, &c. 



Punctum vegetationis, see Apex 



Pyrenoids, of Spirogyra, 224 ; of 



CEdogonium, 217 

 Pythium, 241 



RADICLE, 123, 126 

 Ramenta, 156 

 Ranunculus, flower of, 108 

 Raphides, 103 

 Razor, 7 



Reagents, 2, and Appendix A. 

 Reproductive organs, of Angio- 

 sperms, 108 ; of Gymnosperms, 



145 



Resin-passages, 37, 42, &c., 138, 



&c. 



Resting conidia, 242 

 Rhizoids, 179, 188, 191 

 Rhizophores, 150 

 Rhododendron, style and stigma of, 



120 



Ricinus, seed of, 126 ; seedlings of, 

 132 



Root of Dicotyledons, 85 ; of Mono- 

 cotyledons, 104 ; of Fern, 1 68 



Root, apex of, 91, 105 



Root-cap, 92 



Root-hairs, 22, 87, 174 



Rotation of protoplasm, 22, 213 



Rust of Wheat, 231 



Saxifraga, chalk glands of, 82 

 Scalariform tracheides, 163 

 Scale-hairs, 68 

 Scale-leaves, Pine, 134 

 Schulze's solution, see Chlor-zinc- 



iodine 



Schulze's macerating fluid, 26 

 Scilla (Blue-bell), flower of, 112 

 Sclerenchyma, of Sunflower, 39, 



42; of Elm, 55 ; of Ferns, 158, 



&c. 



Scutellum, 128, 133 

 Secondary thickening of root, 87 ; 



of Monocotyledons, 99 

 Seed coat, 125 



T 



