976 



INDEX. 



Pro-nucleus, 495. 

 Prosenchyma, 83, 950. 

 Protandrous, 910. 

 Proteaceae, 662. 

 Proteids, 51. 

 Proten, 121. 

 Protenchyma, 121. 

 Prothallium, 225, 385, 393, 



394j 427, 4445 447, 47i, 



486, 498, 521, 522, 582. 

 Protococcus, 248, 329. 

 Protogynous, 910. 

 Protomyces, 335, 957. 

 Protonema, 226, 342, 346, 



361, 362, 363, 376 (Figs. 



247, 284, 250, 259). 

 Protophyta, 244, 245. 

 Protoplasm, 2, 37, 947. 

 Prototaxites, 272. 

 Pseudaxis, 178, 180. 

 Pseudocarp, 221, 594, 614. 

 Pseudo-parenchyma, 84,307. 

 Pseudopodium — 

 of Mosses, 369. 

 of Sphagnum, 379 (Fig. 

 263). 

 Pseudotsuga, 533. 

 Psiloteae, 392. 

 Psilotum, 164, 460, 464, 942, 



957. 



Psoralea, 81 (Fig. 69). 



Pteris, 24, 27,28,30,35,109, 

 113, 123, 144, 216, 424, 

 426, 428, 429, 431, 439 

 (Figs. 22, 27, 28, 31, 38, 

 84» 91, 95, loi, 112, 156, 

 294, 296, 299-301, 307, 

 308). 



Puccmia, 331,333, 334 (Figs. 

 223, 224). 



Pulvinus, 880, 882, 889. 



Punctum vegetationis, 138. 



Punica, 651. 



Purpose, 934. 



Puschkinia, 495. 



Putamen, 616. 



Pycnidium, 308, 316, 326. 



Pycnophycus, 282. 



Pyrenomycetes, 316. 



Pyrola, 562, 634 (Fig. 387). 



Pyrolaceae, 659. 



Pyrus, 559. 



Pythium, 273. 



Pyxidium, 616. 



Quercus, 593, 636 (Figs. 438, 

 439)- 



Raceme, 595. 



Racemose branching, 179. 



Racemose inflorescence, 595. 



Racoblenna, 328. 



Radial bundles, 949. 



Radiation of heat, 725. 



Radicle, 593, 635. 



Radula, 343, 346, 356, 362 



(Fig. 245). 

 Rafflesiacea^, 634, 656. 

 Ramalina, 327. 

 Ramenta, 428, 435. 

 Ramondieae, 658. 

 Ranunculaceae, 634, 657. 

 Raphe, 492, 570. 

 Raphides, 65, 84, 88. 

 Reaumuriaceae, 660. 

 Receptacle — 



of Flower, 221,490, 559, 

 614 (Figs. 159-161). 



of Mosses, 370 (Figs. 

 253, 256). 

 Receptacles for secretions, 



93. 



Receptive spot, 271,280, 425. 



Reciprocal hybrids, 916. 



Regular flowers, 611. 



Rejuvenescence of the cell, 

 8, 945- 



Reproductive cells, 223, 896, 



Reseda, 608 (Fig. 145). 



Resedaceae, 608, 659. 



Reserve-materials, 704. 



Reservoir of reserve-mate- 

 rials, 704. 



Resin, 705. 



Resin-passages, 93, 94, 532, 



949 (I^^ig. 78). 



Respiration, 721. 



Restiaceae, 632. 



Resupination, 604. 



Retardation of growth by- 

 light, 755, 832. 



Revolving nutation, 855. 



Rhamnaceae, 660. 



Rheum, 565 (Fig. 391). 



Rhinanthus, 579, 648. 



Rhizantheae, 656. 



Rhizine, 319 (Fig. 214). 



Rhizocarpeae, 385, 391, 442, 



957. 

 Rhizocarpon, 323. 

 Rhizoclonium, 281. 

 Rhizoid, 231, 293, 296, 367 



(Figs. 80, 191, 248). 

 Rhizome, 216. 

 Rhizophore, 168, 477. 

 Rhododendron, 557. 

 Rhodoraceae, 601, 659. 

 Rhodospermine, 50, 51, 298. 

 Rhus, 644 (Fig. 452). 

 Rhynchonema, 904, 920. 

 Ribes, 107 (Fig. 90). 

 Riccia, 344, 351, 354 (Figs. 



239, 240). 

 Riccieae, 352, 354. 

 Ricinus, 53, 112, 114, 182, 



544, 635, 705, 716 (Figs. 



48, 93, 94, 139, 366, 435, 



471). 



Rivularia, 248. 

 Rivularieae, 247, 328. 

 Robinia, 584, 652. 

 Roccella, 329. 

 Roestella, 331, 335- 

 Root, 150, 162. 

 Root-cap, 144, 162, 952 

 (Figs. 112, 114, 120-122). 

 Root-hairs, 162. 

 Root-pressure, 676, 685, 



688 (Figs. 467, 469). 

 Root-sheath, 165 (Figs. 123, 



124). 

 Root-system, 164. 

 Roots — 



branching of, 164, 181 



(Figs. 125, 138). 

 fibrovascular system of, 

 114, 949 (Figs. 96, 

 106). 

 growth in thickness of, 

 133 (Figs. 106, 107). 

 Rosa, 220 (Fig. 160). 

 Rosaceae, 662. 

 Rose-hip, 221, 614. 

 Rosette, 521. 

 Rosiflorae, 662. 

 Rostellum, 913 (Fig. 492). 

 Rotation of protoplasm, 39, 



43. 

 Rubiaceae, 643, 658 (Fjg. 



446). 

 Rubus, 578. 

 Rudbeckia, 599. 

 Ruscus, 217, 935, 

 Rutaceae, 660. 

 Ruteae, 660. 



Sabal, 191 (Fig. 149). 

 Sabina, 516, 527. 

 SabuHna, 578. 

 Saccharomyces, 244, 249. 

 Saccharomycetes, 244, 249, 



955. 

 Sagittaria, 74, 624 (Fig. 59). 

 Salicineae, 660. 

 Salisbura, 512, 527 (Fig. 



347). 

 Salix, 599. 



Salvia, 912, 940 (Fig. 498). 

 Salvinia, 191, 391, 443, 444, 



445, 449, 450, 453 (Figs. 



150, 309, 311-313, 3»6, 



319). 

 Salviniaceae, 391, 459. 

 Samara, 615. 



Sambucus, 650 (Fig. 465). 

 Samolus, 566, 599. 

 Samydaceae, 659. 

 Sanguisorba, 578. 

 Sanguisorbeae, 662. 

 Santalaceae, 576, 662. 

 Santalum, 579, 580, 581. 

 Sap- vesicles, 42. 



