^1^ 



INDEX 



Pits, 8, 9 

 Placenta, 98 

 Placentation, 98 



types, 99 

 Plasma membrane, i 

 Plasmodesma, 5 

 Plastids, 1, 4 



proplastids, 4; types, 5 

 Plerome, 44, 79, 108 

 Pod, 102. (see legume) 

 Foinsettia, 



floral bracts, 89 

 Pollen, 89 



dehiscence, sacs, stomium, 98 

 Pollination, 89 

 Polygonaceae, 



ovule, 100 

 Polypodium, 



bundle, 63 

 Pome, 103, lof, 106 

 Potato (see Solarium) 

 Primary wall (see wall) 

 Primary xylem (see xylem) 

 Primordia, 



of adventitious root, 54; of compound 

 leaf, 83; of flower, 90, 91, 93; of lateral 

 root, 51; of stamen, 97 

 Primula, 



flower, 99 

 Primulaceae, 



floral development, 91; placentation, 



99 

 Procambium, 81, 83 



Proembryo, 108 



Proplastids, 4 



Protective tissues, 15 



Protoderm, 8i, 83 



Protoplast, X 



Protostele, 41 



radial, 40, 69 

 Provascular strand, 65, 68 

 Pteridophytes, 



bundles, 63; cambial activity, 67 

 Pyrus communis (pear) 



stone cells, 15 

 Pyrus Malus (apple) 



floral development, 9^; fruit, /o/; 

 vascular system of flower, g}, 96 



R 



Raceme, 9^, 95 



Radicula Armoracia (horseradish), 2.83 



Radish (see Raphanus') 



Ranunculaceae, 



akene, 102.; follicle, 103 

 Ranunculus (buttercup) 



floral development, gi 



Raphanus sativus (radish), z83, 284 



anatomy, 189; carpels, 2.89; cotyledons, 

 2.97, zgj, 507; fleshy axis, 185, 286, 2.98, 

 }02, }0}; floral ontogeny, 288, x&<j; 

 flower, 2.86, 28-;; food reserves, 304; 

 fruit, 103, 105, x9o; hairs, 306, 507; 

 hypocotyl, 2.85, 195, 198, 301, }02; 

 inflorescence, 95, i86, 287; lateral roots, 

 2.95; leaves, 2.86, 306, ;jo7; morphology, 

 183; primary root, 41, 191, 294, 2gj, 2.98, 

 ■2pp. ioo; root ontogeny, i.'p., 294; root 

 system, 2.84; secondary thickening, 2.98, 

 ^99i 300^ }<'2, }0}; seed, 2.90, 291; seed- 

 ling, 19Z, 2g^; stem, sg, x85, 304, 50/, 

 507; stomata, 17, 307, 507; tertiary 

 thickening, 301, }02, )0}; varieties, 

 2.83; vascular transition, 196, 297, 2g8 



Raphe, loi 



Rays, 14, 58 



medullary, 31, S9, 66; pericyclic, 48, 49; 

 phloem, 33; in root, 48, so; in secon- 

 dary thickening, 68; xylem, 31 



Receptacle, 88 



Regeneration, 



in Ipomoea, 486; in Linum, 401 



Reproduction, 

 gametic, 88; vegetative, 14, 54 



Reticulum, 3 



Rheum (rhubarb), 

 ovule, 100 



Rhizfibium, 345 



leguminosarum, 340, 345; meliloti, 32.8 



Rhizome, 57 



Rhubarb (see Rheum) 



Ricinus communis (castor bean)_ 

 vessel, 30 



Root, 39 



adventitious, 53; cap, 43; fibrous, 39; 

 hairs, 17; histogens, 44; lateral, 51; 

 morphology, 40; number of arcs in, 41; 

 ontogeny, 41; tap, 39; tissue differenti- 

 ation, 47; secondary thickening, 48; 

 stelar types, 40; vascular (root-stem) 

 transition, 69 (see also under specific 

 plant name) 



Root cap, 43 



Root hairs, 17, 48 



Root-stem transition (see vascular tran- 

 sition) 



Rosaceae, 



carpels, 98; floral bracts, 88; floral devel- 

 opment, 91; fruit, 103 



Rutaceae (see Citrus) 



Saccharum officinarum (sugar cane), 1 1 1 

 Sagittaria, 108 



