626 



BOTANY 



Rapliia, 164 



Raphides, *72, 1 39 



Raspberry, Rubus 



Receptacle, of sporangia, 402 ; of the 



flower, 450 

 Red sandalwood, 562 

 Reduction of leaves, 35, 43 ; of transpira- 

 tion, 194 

 Reindeer moss, Cladonia 

 Rejuvenescence, 76, 275 

 Reproduction, 159, 274 sqq. 

 Reseda, 522 ; cells, *65 

 Resedaceae, 522 



Reserve starch, 68 ; material, 81, 204 

 Resin, 21, 73, 88, 126, 134, 206 

 Respiration, 159, 216 ; intramolecular, 



*219 

 Respiratory roots, 43 ; cavity, 95 

 Restiaceae, 470 

 Resting-spores, 309 

 Reticulate vessels, 85 

 Revolving movements, 259 

 Rhachis, 30 

 RJucmnaceue, 539 

 Rhamnus, 142, *538, 539 . 

 Rhatany root, 559 

 Rheotaxis, 243 

 Rheotropism, 263 

 Rheum, *505, *506 

 Rhinanthoideae, 583 ; attacked by Goleo- 



sporium, 367 

 Rhiaanthus, 583 ; haustoria, 209 

 Rhizines, 378 

 Rhizobium, *210, 312 

 Rhizocarpae, 406 

 Rhizoids, 15 ; of the Bryophyta, 383, 



391 ; of the Pteridophyta, 397 

 Rhizoma Calami, 475 ; Filicis, 407 ; Gal- 



angae, 486 ; Graminis, 482 ; Iridis, 



470 ; Podophylli, 516 ; Veratri, 468 ; 



Zedoariae, 486 ; Zingiberis, 486 

 Rhizome, 22, 33 ; multiplication, 278 

 Rhizomorpha, *369 ; phosphorescence, 



223 ; heliotropism, 253 

 Rhiznphora, 293 

 Rhododendroideae, 568 

 Rhodomela subfusca, 337 

 Rhodophyceae, 13, 334 

 Rhoeadinae, 517 

 Rhubarb, Rheum 

 Rhus, 535 

 Rhytisma, 359 

 Ribes, *551, 552 ; attacked by Cronar- 



tium, 367 

 Riccia, 385 ; form, *14 

 Ricciaceae, 385 

 Rice, Oryza 



French, Triticum dicoccum 

 Richardia, 474 

 Ridnns communis, *542, 543 ; aleurone, 



"71 ; palisade cells, 115 



Rigour, cold, heat, etc., 273 



Ringed bark, 141 



Robinia, 561 ; leaf, 30, *36 ; tyloses, 



*125 

 Roccella, 378 

 Rock-Rose, European, Helianthemum vul- 



gare 

 Roestelia, 367 

 Rootless plants, 47 

 Roots, 15, 40-47 ; cap, 15, 41, *152 ; 



respiratory, 43 ; primary cortex, 112, 



113 ; sheath, 113 ; central cylinder, 



113 ; hairs, *182 ; pressure, *184, 



185 ; contraction of, 295 

 Rosa, 553, 556 ; prickles, 36, 99 ; ethereal 



oil, 73 

 Roseceae, 552, *558 

 Rosae centifoliae petala, 556 

 Rosemary, Rosmarinus 

 Rosiflorae, 552; wood, 129 

 Rosmarinus, 587 

 Rosoideae, 554 

 Rosolic acid, 80 

 Rostellum, 488 

 Rotation of the protoplasm, 52, 242, 214 



slow, method of, 263 

 Royal Fern, Osmunda regalis 

 Rodtes, 214, 373 

 Rubiaceae, 588 

 Rubidium in plants, 172 

 Rnbiiiw-e, 587 

 Ruboideae, 554 



Rubus, 554, *555 ; prickles, 36 

 Rue, Ruta graveolens 

 Rumex, 504, 505 ; acids, 74 

 Runners, see Stolons 

 Ruscus, *25 

 Rush, Bog, J uncus 

 Flowering, Butomus 

 Wood, Luzula 

 Rassida, *368, 373 

 Rust fungi, Uredineae 

 Ruta, *534 

 Rutaceae, 534 

 Rye, Secale ; attacked by Glaviccps, 358 



Sabadilla, 466 



Succamina, 282 



Saccharine in sap, 185 



Saccha/romyces, 350 ; form, 10, *11, 56 



Succharomycetes, 350 



Saccharose, 74 



Saccharum, 480, *481, 482, 507 ; wax, 



91 

 Sacred Lotus, Nelumbium 

 Saffron, 469 

 Sage, Salvia 

 Sagittaria, *483 

 St. John's Wort, common, Hypericum 



perforatum 

 Salep, Orchis 



