^34 



INDEX. 



Sedum popiilifolium, 498. 



Sedum purpurascens, sto- 

 mata, 41 (Fig. 15). 



Sedum rcflexuni, 498. 



Sedum spurium, 32. 



Sedum Tclephium, anoma- 

 lous thickening, 608 ; vas- 

 cular system, 233, 319. 



Sedum ternatum, 499 : se- 

 cretions, 138. 



Segment, 15. 



Segment-cell, 15. 



Selaginella, 15, 213: apical 

 cells, 15, 21 ; epidermis, 

 77 ; root-structure, 364 ; 

 sclerenchyma, 430 ; sieve- 

 tubes, 182; vascular sys- 

 tem, 282 (Fig. 131), 301, 



314) 315, 342, 343, 345, 



348, 364. 

 Selaginella arboresccns, 21. 

 Selaginella denticulata, sto- 



mata, 39. 

 Selaginella Galeotii, 282. 

 Selaginella helvetica, 282, 

 Selaginella inaequalifolia, 



283 : epidermis, 77. 

 Selaginella Kraussiana, 15, 



282, 314, 364, 365. 

 Selaginella Lyallii, 21, 283. 

 Selaginella ^lartensii, 15, 



16, 17, 77, 282, 314, 



365. 

 Selaginella Pervillei, 21. 

 Selaginella pubescens, 282. 

 Selaginella rupestris, 282, 



430. 

 Selaginella spinulosa, 283, 



343' 43°- 



Selaginella Wallichii, 21, 



Sempervivum, calcium oxa- 

 late in, 102; vascular sys- 

 tem, 304. 



Sempervivum arboreum, 

 458, 499. 



Sempervivum calcareum, 

 secretion, 102 ; wax, 83, 



Sempervivum glaucum, wax, 

 83. 



Sempervivum tectorum, 

 wax, 83. 



Senecio vulgaris, secretory 

 reservoirs, 446, 447 ; wa- 

 ter-pore, 52. 



Senecioneae, 446, 



Sequoia, 14, 118: sieve- 

 tubes, 179 ; vascular sys- 

 tem, 246, 



Sequoia gigantea, sieve- 

 tubes, 179, 180 (Fig. 



77). 

 Sequoia sempervirens, 118 : 



parenchyma, 410, 

 Serjania, anomalous wood. 



581 (Figs. 230, 232), 



583. 



Serratula, 150. 



Serratula centauroides, 445. 



Seseli, medullary rays, 491. 



Sesuvium, 590. 



Sets, 54. 



Sheath, 6, 414. 



Sheath of aerial roots of 

 orchids, 227. 



Sheperdia canadensis, hair 

 structures, 63 ; tracheides, 

 4-Si. 



Sida, fibres, 129. 



Sida retusa, fibres, 132. 



Sideroxylon, 146. 



Sideroxylon mastichoden- 

 dron, secretory sacs, 151. 



Sieve-fields, 172. 



Sieve-plates, 172. 



Sieve-pores, 174. 



Sieve-tubes, 172; extrafas- 

 cicular, 231 ; of Angio- 

 sperms, 177 ; of Apocyna- 

 ceae, 231 ; of Asclepia- 

 daceae, 231 ; of Campanu- 

 laceae, 231; of Cichoria- 

 ceae, 231 ; of Convolvula- 

 ceae, 231 ; of Cryptogams, 

 180; of Equisetum, 180; 

 of Ferns, 180: of Gym- 

 nosperms, 179; of Lyco- 

 podium, 180 ; of Melasto- 

 maceae, 231 ; of Myrta- 

 ceae, 231; of Potamoge- 

 ton, 232 ; of Selaginella, 

 182 ; position of, 226. 



Silaus, vascular system, 253, 

 320. 



Silaus pratensis, 253, 254, 

 310. 



Silaus tenuifolius, 254. 



Silene, periderm, 552 ; vas- 

 cular system, 236, 243. 



Silene catholica, 420. 



Silene inflata, stomata, 39. 



Silene italica, 419, 458. 



Silene nemoralis, glandular 

 hairs, 91. 



Sileneae, glandular hairs, 90, 



95- 

 Silica in epidermis, 102. 

 Silicification in leaves, 102, 



103. 

 Silphium conjunctum, col- 



lenchyma, 119. 

 Silphium connatum, 103. 

 Silver Fir, growth of wood, 



477. 



Silybum marianum, secre- 

 tory sacs, 150, 446. 



Simaruba officinalis, crys- 

 tals, 530, 537 ; fibres, 528. 



Sinapis, hairs, 60. 



Siphocampylus manettiae- 

 florus, laticiferous tubes, 



432, 434- 

 Siphocampylus microstoma, 



434- 



Siphonia elastica, latex, 186. 



Sison amomum, sap-pas- 

 sages, 449. 



Skimmia, oil-cavities, 207. 



Smilaceae, sclerenchyma, 

 419; vascular system, 301, 

 304. 



Smilax, endodermis, 124; 

 prickles, 66 ; vascular sys- 

 tem, 304, 357. 



Smyrnium, sap-passages, 



449, 450. 



Smyrnium Olusatrum, 449. 



Smyrnium perfoliatum, 



water-pore, 52. 



Sobralia, aerial roots, 229. 



Sobralia decora, 229, 230. 



Solanaceae, collenchyma, 

 119; cortex, 404 ; crys- 

 tals, 141, 143 ; secretions, 

 138 ; stomata, 41 ; vascu- 

 lar system, 338. 



Solanum, hairs, 55, 56, 64, 

 65, 70; prickles, 66. 



Solanum argenteum, 64. 



Solanum Dulcamara, 143, 

 338, 479, 505 : lenticels, 

 560; periderm, 548; phel- 

 loderm, 549; sieve-tubes, 

 231. 



Solanum marginatum, hairs, 

 62. 



Solanum tuberosum, 338 : 

 hairs, 61, 143 ; sieve-tubes, 

 231 ; stomata, 48 ; thylo- 

 ses, 171 ; vascular system, 

 387. 



Solanum verbascifoliuro, 

 hairs, 62. 



Soldanella, 415. 



Soldanella Clusii, water- 

 pore, 51. 



Solidago, oil-passages, 204, 

 446, 447 ; vascular sys- 

 tem, 308. 



Solidago laevigata, 204. 



Solidago limoniifolia, 446, 



447- 



Sollya heterophylla, 452. 



Sonchus, laticiferous tubes, 

 433,525; sieve-tubes, 23 1. 



Sonchus pinnatus, 525. 



Sonchus tenerrimus, 433. 



Sonerila margaritacea, cor- 

 tical bundles, 260. 



Sophora, tracheides and 

 fibres, 483. 



Sophora japonica, 479, 496, 

 502, 535: annual rings, 



