INDEX. 



233 



Palisade tissue, 102 



Pansy, leaf of, 99 



Papilionaceous flower, 149 



Pappus, 165 



Parenchyma, 27 



Pasteur's solution, 5 



Pea, flower of, 148 



Peach, floral diagram of, 144; 

 flower of, 168; ovary of, 191 



Pear, fruit of, 194 ; practical work, 

 225 



Peg, use of, in germination of 

 gourd, 22; practical work, 203 



Pericycle-fibres, 62 



Pericycle, in Fern rhizome, 125 ; 

 of root, 42 ; of stem, 56, 62 



Periderm, 83 



Petal, 144 



Petiole of leaf, 99 



Phanerogam, 140 



Phellem, 83 



Phelloderm, 83 



Phellogen, 83 



Phloem, of root, 43 ; in Fern rhi- 

 zome, 126; in Sunflower stem, 

 56 ; secondary, of Oak, 86 



Phyllotaxy, 96 



Pilea, 158 



Piliferous layer, 36 



Pimpernel, 51 



Pinus sylvestris, cambium of, 73 



Pistil, 148 n. 



Pits, bordered, 61 ; of Pinus, 74 ; 

 of Oak, 77 



Placenta, in Fern, 130 



Plantago, see Plantain 



Plantain, flower of, 155, 159 ; prac- 

 tical work, 222 ; phyllotaxy of, 98 



Plerome, 179 



Pleurococcus, reproduction of, 110; 

 practical work, 213 



Plumule, 18 



Pollen, 147; distribution of, by 

 insects, 153; by wind, 155; 

 generative cell of, 176 ; vegeta- 

 tive cell of, 176 ; germination 

 of, 175 ; germinating, practical 

 work, 222 ; -grain, structure of, 

 175; of wind-fertilised flowers, 

 156 ; rough-coated, in insect-fer- 

 tilised flowers, 156 ; -sac, 147 



Polypodium, antheridium of, 135 ; 

 archegonium of, 134 



Poplar, leaf-fall in, 106; practical 

 work, 213 



Poppy, seeds of, 183 



Populus, see Poplar 



Potato, tuber of, 23; practical 

 work, 204 



Primordial utricle, 7, 200 



Protandrous flower of Silene, 161 



Prothallus, 133 ; of Fern, practical 

 work, 218 



Protogynous flower of Plantain, 160 



Protophloem, 126 



Protoplasm, circulation of, 13, 201 



Protoplast, 115 



Protoxylem, 57 (fig. 23) 



Pteris, see Fern 



Pteris serrulata, archegonium of, 

 134 



Pumpkin, see Gourd 



Pyrenoids, 199 ; in Spirogyra, 11 



Pyrus com munis, see Pear 



Quercus sessilis and pedunculata, 

 see Oak 



Eadial section, 70 

 Kadicle, 18 

 Eanunculaceae, 141 

 Banunculus, see Buttercup 



