INDEX 



673 



Scale leaves, 71 



bud, 85 

 Schizocarp, loz, 103 (see also Apium) 

 Sclerenchyma, 2.2., 13, 2.5 

 Scolymus, 



oil ducts, 650 

 Secale cereale (rye), 1 1 1 

 Secondary thickening, 



anomalous, 51; changes accompanying, 

 69; in Dracaena, 68; in monocotyledons, 

 68; of root, 48; of stem, 66; in transi- 

 tion region, 71 ; of walls, 8; in Yucca, 68 

 Secondary wall (see wall) 

 Secondary xylem (see xylem) 

 Secretory tissues, 



ducts, glands, lactiferous cells, nectaries, 



34. 35 



Seed, 107 



Seedling, 70 



Sepal, 88 



vascular supply, 96 



Sheath, 73 



Shoot, 57, 71,81,88 (see also under specific 

 plant name) 



Sieve tubes, 31 



callus, 32.; ontogeny, 32. 



Silicle, 105 



Silique, loi, 103 



Simple tissue, 11 



Siphonostele, 



dissected, 58; radial, 40 



Soja, 



floral development, 361; nodules, 345 



Solanaceae, 514, 550 



bundles, 60; floral development, 543; 

 fruit, 103; stomatal type, 17 



Solatium ]ame sit (wild potato), 514 



Solarium M.elongena (eggplant), 514 



Solarium murkatum, 

 gametophyte, 547 



Solarium tuberosum (potato), 514 



adventitious roots, 516, 513, iz^; anat- 

 omy, 519; cotyledons, 52.1; embryog- 

 eny, /20, 547, /^j; floral abscission, 

 544; floral development, 543; flower, 

 518, //(?, 543; fruit, //(?, 519; inflores- 

 cence, 518; lateral root, 52.1; leaf, 515, 

 541, S42; megagametophyte, 546; me- 

 gasporogenesis, 546; microsporogene- 

 sis, 545; morphology, 514; ovule, 

 519; periderm, 15; rhizome, ///, 

 516, 5Z1, 532., /55, ii4: root, 20, 517, 

 j/7, 512., 514, s^4i seed, //tf, 519, sio; 

 seedling, $16, 52.1, $21; stem, 514, 

 5x7, /2if, 52.9; sterility, 519; stomata, 

 16, 540; tuber, ///, 516, 535, sis, 

 S}6, }3^, 539, }4o; tuberization, 537; 



tyloses, 30; vascular anatomy of stem, 

 530, j}i; vascular transition, 515, }2j; 

 vegetative propagation, 516, 52.3 



Spike, 94, 94 



Spines, 71 



Spiraea, 

 flower, g2 



Spongy tissue, 76, 82. 



Sporangia, 88 



Sporophylls, 71, 88, 94, 98 (see also micro- 

 and mega-) 



Squash (see Cucurbita) 



Stamen, 88, 89, 94 



ontogeny and vascular supply, 97 



Starch sheath, 2.1 



Stele, 40 

 dictyostele, 58; meristele, 6i; monostele, 

 41; protostele, 41; radial siphonostele, 

 40; root types of, 40 



Stem, 



anatomy, 58; general morphology, 57; her- 

 baceous dicotyledonous, 58; herbaceous 

 monocotyledonous, 61; ontogeny, 63; 

 types, 57 (see also under specific plant 

 name) 



Stereome, ii 



Stigma, 90 



Stipule, 73, 84 



Stolon, 58 



Stomata (sing, stoma), 16 



in bud scales, 85; frequency and distri- 

 bution, 75; ontogeny, 17; types, 17 



Stomium, 98 



Stone cells, 15 



Style, 90 



Suberin, 11 



Suspensor, 108 



Sweet Potato (see Ipomoea) 



Synergids, loi 



Tapetum, 97 



Tendrils, 71 



Tissues, 



absorptive, 15; collenchyma, ix; complex, 

 11; conjunctive and connective, 68; 

 culture, 13; epidermal, 15; mechanical, 

 12.; nonsclerotic, 13; palisade, 76; 

 phellem, 15; phloem, 31; protective, 

 15; simple, 11; spongy, 76; xylem, 15 



Tobacco (see Nicotiana') 



Tomato (see Ljcopersicum') 



Torus (see receptacle) 



Trachea (see vessel) 



Tracheid, 24, i£ 



fiber tracheid, 15; types of, 17 



Tragopogon porrifolius (salsify), 62.1 



