674 



INDEX 



Transfusion cells, zi 



Trifolium, 

 embryogeny, 366; floral development, 361; 

 nodules, 345 



Trifolium pratense, 309 



Trigonella, 318 



Triticum spp. (wheat), 141 



adventitious roots, 143, 159; anatomy, 

 149; bundles, 165, 166, 169; classifica- 

 tion, 141; coleoptile, 167, 167; distri- 

 bution and origin, 141; embryo, 151, 

 IS}, 154; embryogeny, 174, 175: 

 endosperm, 151, 175; epiblast, 151; 

 first internode, 160, 161; floral develop- 

 ment, 171, 171; flower, 148, 149; ger- 

 mination, 155; grain, 149, //o, ///; 

 inflorescence, 95, 145, 146; integuments, 

 176, /;;; leaf, 79, 144, 167, i6g; mega- 

 gametophyte, 173; megasporogenesis, 

 173; microsporogenesis, ijx; morphol- 

 ogy, 142.; node, 166; ovary, 171; ovule, 

 171, 175; pericarp, 150, 176, 177; 

 pollination, 149; primary root, 141, 

 156, //;; prophyll, 167; rachis, 147, 

 148; root ontogeny, 158; root system, 

 142., 144; second internode, 163, 16}; 

 seed coats, 149; seedling, 142, 154, ///; 

 seminal roots, 141, 156, 159; shoot 

 ontogeny, 170; spikelet, 147, 148, 171; 

 stem, 61, 143, 163, 164, 166; stomata, 

 16, 17, 76, 164, 168; tillers, 144; transi- 

 tion region, 161, 161, 161 



Tuber, 58 



Tulipa, 179 



Tunica, 80 



Tyloses, 30, 610, 611 



U 



Umbel, 94, 95 



compound, 95; umbellet, 95 

 Umbelliferae, 451 



floral development, 481; fruit, 103, 104; 

 inflorescence, 95; leaf ontogeny, 83, 84; 

 medullary bundles, 462., 466; oil ducts, 

 34; stems, 464 

 Urticaceae, 

 ovule, 100 



V 

 Vascular anatomy, 

 of dicotyledonous stem, 58; of flower, 96; 

 of leaves, 74, 77; of monocotyledonous 

 stem, 61; of root, 40; of transition 

 region, 69 

 Vascular bundles (see bundles) 

 Vascular transition, 69 



how accomplished, 70; types, 71 (see also 

 under specific plant names) 



Vegetative propagation, 14, 54 (see also 



Ipomoea, Linum, Solanurn) 

 Veins, 75, 77 

 Vessel, 24, 1.7 

 ontogeny, i8, 29; types, i8; vessel seg- 

 ments, 1.7 

 Vicia Faba, 319 



nodules, 345, 347; vascular transition, 348 

 Vicia sativa, 



vascular transition, 348 

 Vigna, 

 nodules, 345 



W 

 Walls, 5, 6 

 cell plate, 7; chemistry of, 10; lignifica- 

 tion, 10; primary, 7; secondary, 7; sec- 

 ondary thickening, 8; structure, 9 

 Wheat (see Triticum) 



Xylem, 11, 24, 15 



fibers, 14, 24, 30; metaxylem, 2.5; paren- 

 chyma, 30; primary, 15; protoxylem, 

 Z5; rays, 31; secondary, 2.5; tracheids, 

 2.6; vessels, 17 



Yucca, 

 secondary thickening, 68 



Zea Mays (corn), in 

 adventitious root, //, 118, iiz; anatomy, 

 113; antipodal tissue, 139; bulliform 

 cells, 12.8; bundle, ii6, 127; carpellate 

 inflorescence, 132.; carpellate spikelet, 

 133, i)s: coleoptile, iii, 124; embryo, 

 115, ///, 116, 117: embryogeny, 137, 

 i}8; endosperm, 138; epidermis, 12.8; 

 first internode, 12.1, 12}; floral develop- 

 ment, i}i; germination, 118; glands, 

 35, 116; grain, 113; guard cells, 16, 

 130; hypocotyl, 12.2.; inflorescences, 

 113; lacunae, 14, 30; leaf, 118, 129; 

 megagametophyte, 136; microgameto- 

 phyte, 136; morphology, in; node, 

 12.5; ovule, 135; plastids, 4, 12.8; pol- 

 lination, 136; primary root, 119, 120, 

 izi; root, 12, 4i, 4S, m, 112; scutellum, 

 117; second internode, 114, 12s; seed- 

 ling, 118, 119; seminal root, 12.1; 

 shoot, 80, in; staminate inflorescence, 



130, i}i, frontispiece; staminate spikelet, 



131, 1)1, 1)2; stem, 62, 115, 1x6; sto- 

 mata, 17, 76, 118, 130, I}0 



Zonal growth, 90, 91 

 Zygote, 12., 88, loi, 107 



