INDEX 
Ranunculus, 248, 518 
Raphe, 287 
Raphides, 89, 90 
Raspberry, 189 
fruit of, 300, 306 
stems of, 186 
Ray, J., 325 
Rays, medullary, 139 
vascular, 139 
Reagents, 680 
Receptacle, 262, 265 
Receptacles of Fucus, 356, 356, 367 
of Marchantia, 421 
Red Algz, 95, 357 
Red Gum, 90 
Red Squill, 490 
Reductase, 103 
Reduction division, 51 
Redwood, 465 
Regma, 301 
Reindeer Moss, 417 
Rejuvenescence, 45 
Remijia pedunculata, 605 
purdicana, 605 
Reproduction, asexual, 44, 45, 378 
defined, 38, 44 
sexual, 44 
Reserve cellulose, 109, 487 
parenchyma, 117 
starch, 76 
Resin duct, Fig. of, 150 
Resina, 465 
Resinogenous layer, 96 
Resins, 97, 98 
Respiration, defined, 66, 225 ~ 
distinction from photosynthesis, 66 
Rhamnacea, 554 
Rhamnales, 554 
Rhamnase, 103 
Rhamnose, 103 
Rhamnus cathartica, 556 
Rhamnus Frangula, 103, 555, 556 
Rhamnus Purshiana, 554, 556 
Rheotropism, 34 
Rheum, 512 
officinale, 513 
palmatum, 512, 513 
Rhinanthus, 599 
Rhizoclonium, Fig. of, 317 
781 
Rhizoids, 65, 347, 420, 426. 
Rhizome, defined, 192 
histology of monocotyl, 215 
Rhizophora, 619 
Rhizophoracea, 569 
Rhizopus, 378 
nigricans, 377 
strains of, 380 
Rhododendron, 580 
Rhodophycez, 357 
Rhodymenia palmata, 361 
Rhoeadales, 524 
Rhubarb, 513 
Rhus, 92, 305, 552 
Cotinus, 551 
glabra, 551, 552 
hairs of, 124, 125 
japonica, 552 
semialata, 552 
succedeana, 96 
sylvestris, 96 
toxicodendron, 551, 552 
typhina, 552 
venenata, 551 
vernicifera, 96 
Rhytidome, 130 
Ribbon Bush, 512 
Riccia, 418, 419, 617 
Ricciocarpus, 617 
Rice starch, 79, 80 
Ricinus communis, 256, 312, 651 
Rivularia, 335, 336 
Robinia, 213 
Roccella tinctoria, 416 
Rock Rose Family, 567 
Rockweeds, 354 
Root, adventitious, 160 
branching, 176, 177 
California Privet, 170 
cap, 158 
classification as to form, 161 
classification as to order, 160 
conical, 162 
consistency, 162 
defined, 152 
distinction from stem, 160 
duration of, 162 
epiphytic, 161 
fibrous, 160, 162 
