652 



INDEX. 



Rhododendron maximum, 

 medullary rays, 489. 



Rhus, resin passages, 203, 

 452 ; tracheides and fibres, 



483. 

 Rhus aromatica, 452. 

 Rhus Coriaria, 452. 

 Rhus Cotlnus, 452, 484, 493. 

 Rhus elegans, 452. 

 Rhus glauca, 452. 

 Rhus semialata, 452. 

 Rhus suaveolens, 452. 

 Rhus Toxicodendron, 452, 



484. 



Rhus typhma, crystals, 142, 

 452, 470. 



Rhus vUlosa, 452. 



Rhus viminalis, 452. 



Rhus virens, 452. 



Rhynchosia phaseoloides, 

 anomalous wood, 589. 



Rhynchospora, 32. 



Rhynchospora alba, 419. 



Ribes, bast-fibres, 526 ; 

 crystals, 530 ; glands, 94 ; 

 hairs, 65 ; ligneous bun- 

 dle, 495 ; periderm, 559 ; 

 phelloderm,552; prickles, 

 66 ; tracheides and fibres, 

 483. 



Ribes nigrum, cortex, 552 

 (Fig. 220) ; crystals, 142 ; 

 glandular hairs, 90, 95 ; 

 hair structures, 64. 



Ribes rubrum, 479: vascu- 

 lar system, 239. 



Ribes triste, water-pore, 51. 



Richardia, laticiferous tubes, 

 436; vascular system, 304, 



315, 327. 



E ichardia sethiopica, vas- 

 cular system, 268, 269 ; 

 water-pores, 5 1 . 



Richardia africana, 346. 



Ricinus, glands, 96 ; struc- 

 ture of stem, 455 (Fig. 

 194) ; vascular bundle, 

 333 (Figs. 154, 155)- 



Ricinus communis, crystals, 

 140 ; vascular system, 236, 

 353 ; wax, 85. 



Rings, annual, 501. 



Rivina aurantiaca, 590. 



Rivina brasiliensis, 590. 



Robinia, 497 : annual rings, 

 476 ; lenticels, 562 ; lig- 

 neous bundle, 495 ; scle- 

 renchyma, 426 ; thyloses, 

 171. 



Robinia Pseudacacia, 484, 

 496 : crystals, 142 ; fibres, 

 133; medullary rays, 489 ; 



. periderm, 548, 558 ; tan- 

 nin-sacs, 153 ; wood, 511. 



Robinia viscosa, glands, 90. 



Rochea coccinea, vascular 

 bundles, 379 (Figs. 181, 

 182); water-pore, 53 

 (Fig. 20). 



Rochea falcata, hair struc- 

 tures, 65. 



Roemeria, 187 : laticiferous 

 tubes, 435. 



Root-cap, 9. 



Root-hairs, 55. 



Root-hairs, absence of, 55. 



Roots, vascular system of, 



Rosa, cortex, 404 ; glands, 

 90 ; ligneous bundle, 495 ; 

 pith, 403 ; prickles, 66. 



Rosa canina, epidermis, 77 ; 

 lenticels, 565 ; ligneous 

 bundle, 495. 



Rosa damascena, 48. 



Rosmarinus, vascular sys- 

 tem, 322. 



Rosmarinus officinalis, hairs, 

 62 ; parenchyma, 411 ; 

 sclerenchyma, 418, 497. 



Rubia, 171 : root, 517 ; se- 

 cretory sacs, 147 ; vascu- 

 lar system, 243, 296, 308. 



Rubia tinctorum, water- 

 pore, 53. 



Rubiacese, 457 : vascular 

 system, 296. 



Rubus, 66, 70: pith, 403; 

 vascular system, 309. 



Rubus csesius, prickles, 66. 



Rubus Hofmeisteri, prickles, 

 66. 



Rubus Idxus, 484 : peri- 

 derm, 552; prickles, 66. 



Rubus odoratus, 560. 



Rudbeckia speciosa, water- 

 pore, 52. 



Ruellia tormosa, cystoliths, 

 105. 



Ruellia livida, 103. 



Ruellia maculata, vascular 

 system, 243. 



Rumex, coUenchyma, 119, 

 120; glandular hairs, 90, 

 91- 



Rumex alismifolius, 458. 



Rumex Lunaria, 458, 499. 



Rumex obtusifolius, 71. 



Rumex patientia, 71. 



Ruppia, vascular system, 

 277. 



Ruscus, vascular system, 

 301. 



Ruscus aculeatus, 77, 102. 



Russelia juncea, vascular 

 system, 243, 308. 



Ruta graveolens, oil-cavities, 

 208 ; stomata, 39. 



Rutacese, oil-cavities, 202, 

 207. 



Saccharum, vascular system, 

 311 ; wax, 87. 



Saccharum oflBcinarum, scle- 

 renchyma, 422 ; wax rods 

 on stem, 83, 84 (Fig. 28), 



Saccolabium Blumei, 229. 



Saccoloma, 289. 



Saccoloma adiantoides, vas- 

 cular system, 289, 290 

 (Fig. 137). 



Sacs, 5, 135: containing 

 mucilage, 143 ; contain- 

 ing crystals, 137, 529; 

 containing gum-resins, 

 145 ; contents of, 152 ; 

 membrane of, 152 ; tan- 

 nin, 153. 



Sagittaria, 10 : air-spaces, 

 217, 218, 219; intercellu- 

 lar spaces, 211 (Fig. 87); 

 root-development, 397 ; 

 stomata, 49, 50. 



Sagittaria indica, 218. 



Sagittaria lancifplia, 218. 



Sagittaria sagittifolia, 165, 

 218 : stomata, 49, 50. 



Salicornia, 31 : parenchyma, 

 409 ; stomata, 45, 48 ; 

 tracheides, 226 ; vascular 

 system, 256, 297, 304. 



Salicornia Emerici, 226. 



Salicornia herbacea, 226, 

 409, 591. 



Salicornia patula, 226. 



Salicornia sarmentosa, 2 26. 



Salisburia, sieve-tubes, 179. 



Salix, 1 2^536: cork, 110,111, 

 H2, 550; cortex, 404; 

 crystals, 530; fibres, 527; 

 glands, 90, 96 ; lenticels, 

 564 ; medullary rays, 493; 

 mucilage, 74 ; periderm, 

 548; secondary thicken- 

 ing, 479; tracheides and 

 fibres, 483. 



Salix acutifolia, 479, 498. 

 i^alix alba, mucilage, 74, 

 112,472. 



Salix amygdalina, mucilage, 



74. 555- 

 Salix aurita, crystals, 140, 



493- 

 Salix bicolor, 493. 

 Salix Caprea, 493. 

 Salix cinerea, crystals, 142, 



484. 

 Salix daphnoides, epidermis, 



77. 

 x/6alix fragilis, 112, 537, 564. 

 Salix hippophaefolia, 479, 

 498. 



