794 



BOTANY 



Pyrenoids, 18 



Pyrenomycetes, 442 



Pyronema, 438, 439, 445, *446, *447 



Pyrus, 660, 661 ; flower, *550 



Pythium, 433 



Quassia, 654, *654 



Querciflorae, 609 



Quercus, *614, *615, 749 ; cupule, *613 



Quillaja, 660, 664 



Quince, Cydonia vulgaris 



Raceme, *126 



Radial vascular bundle, 136 



Radicle, 565 



Radish, Raphanus salivus 



Rafflesia, 189 



Rafttesiaceae, 639 



Rainalina, 471 



Ramenta, 54 



Ranunculaceae, 633 



Ranunculus, *633, *634, *635, 636 ; 

 flower, *550 ; root of, 136 ; vascular 

 bundle, *104 



Raoulia, *170, 716 



Raphanus t 646 



Raphe, 579 



Raphides, 30, *31 



Raspberry, Rubus idaeus 



Ravenala, 745 



Reaction-time, 347 



Receptacle, 508 



Red Algae, Rhodophyceae 



Red Currant, Ribes rubrum 



Reduction division, 24, 203, *206, 369 



Regeneration, 164, 282 ; in Bryophyta, 481 



Regulation, capacity of, 217 



Reindeer Moss, Cladonia rangiferina 



Rejuvenation, 21 



Reparation, 282 



Reproduction, 192, 217, 310; asexual, 

 193 ; conditions of, 311 ; digenetic, 

 193 ; monogenetic, 193; sexual, 193, 

 315 ; organs of, 192 ; vegetative, 193 



Reseda, multicellular formation. *26 



Reserve materials, 263 ; mobilisation of, 

 263 ; regeneration of, 268 ; transport 

 of, 267 



Resins, 30, 268 



Respiration, 269, 273 ; experiment to de- 

 monstrate, *271 ; intramolecular, 272 



Respiratory coefficient, 270 



Respiratory roots, *167 



Rest-Harrow, Ononis 



Resting condition, 303 ; awakening from, 

 305 



Restitution, 164, 282 ; stimulus of, 305 



Rhabdonema, 392 



Rhamnaceae, 657 



Rhamnus, *657, 658 



Rheum, *621 



Rhinanthus, 191, 259 



Rhipidium, *130 



Rhipsalis, 629 



Rhizoids, 80 



Rhizomes, 177 



Rhizomorphs, 466 



Rhizophora, *168, 674, *675 



Rhizophoraceae, 674 



Rhizopus, *433, 434, 435 



Rhododendron, 685 ; ovary of, *548 



Rhodomela, 427 



Rhodophyceae, 421 



Rhoeadinae, 639 



Rhubarb, Rheum 



Rhus, 655 



Rhynia, 501 



Ribes, *659 



Riccia, 80, *81, *487 



Ricciaceae, 487 



Rice, Oryza saliva 



Richardia, 740 



Ricinus, *625, *626, 627 ; endosperm of, 

 *31 



Rigidity against bending, 93, *94 



Rigor, 361 



Robinia, *174, 672 



Roccella, 471, 475 



Rock Rose, Helianlhemum vulgare 



Root- cap, 131 



Root-climbers, 182 



Root-hairs, *54, 134, *134, *227 



Root- pockets, 131 



Root-pressure, *234, 236 



Root-system, appearance of, 139 



Root-thorns, 172 



Root-tubercles, *260 



Root-tubers, 179 



Roots, 131, 139 ; borne on shoots, 139 ; 

 branching of, 138 ; external features 

 of, 132 ; geotropic curvature of, *342 ; 

 growing point, 131 ; growth in thick- 

 ness of, *147 ; mechanical tissue of, 

 *137 ; primary structure of, 134 



Rosa, *660, 664 ; fruit of, *582 



Rosaceae, 660 



Rose of Jericho, Anastatica hierochunlica 



Rosiflorae, 658 



Rosmarinus, 696 



Rotation, 13 



Rowan, Sorbus (Pyrus} aucuparia 



Royal Fern, Osmunda regalis 



Roziles, 467 



Rubia, 704 



Rubiaceae, 704 



Rubiinae, 704 



Rubus, 663 ; collective fruit of, *584 



Rumex, 621 



Runners, 194 



Ruppia, 721 



Ruscus, cladode, .*173 



Rush, Juncus 



