LIST OF PLANTS USED FOB STUDY. 473 



Strelitzia reyina. For orange-red chromatophores, 55. Flowers. Fresh. 



A showy-flowered warm-house perennial. 

 Sugar-cane. See Saccharum officinarum. 

 Sweet Pea. See Lathyrus. 



T. 



Tanacetum vulgare (Tansy). Pollen development, 444. Fixed. 

 Taraxacum (Dandelion). For anastomosing latex system, 125. Roots. Fresh, 



or in alcohol. 

 Taxus baccata. (Yew). Structure of root, 168 ; of root-apex, 222. Roots. 



Fresh, or in alcohol. 

 Tlmja occidentals. Growing apex of root, 222. Young roots. Best in 



alcohol. 

 Tilia parvifolia (Lime-tree). Structure of stem, 153. Branches and twigs. 



Fresh, and in alcohol. The latter best gathered in July. 

 Toadstool. See Amanita. 

 Torenia asiatica. Development of pollen-tubes, 392. Fertilisation, 405. 



Flowers. To study fertilisation, the flowers selected should be 



pollinised by hand a day and a half or two days before they are 



required. Torenia is a hot-house plant, treated as an annual, and 



flowering in June and July. 

 Tradescantia virginica. Movements of protoplasm, 38, etc. Flowers. Fresh. 



T. virginica is a hardy herbaceous perennial, flowering from May or 



June to September or October. 



Stomata, 84. Leaves. (T. zebrina, a common plant in plant- 

 houses can replace this.) 



Structure of pollen-grains, 385. Flowers and buds of different 



ages. Fresh. 



Development of pollen-tube, 392. Freshly opened flowers. 



Grown in a solution of 5 per cent, sugar and 1-5 per cent, gelatine. 

 Cell and nuclear division*, 434. Fresh flower-buds between and 



| inch high. Stamens should be examined in 3 per cent, sugar. 

 Direct nuclear division, 456. Old stems. Fresh. 



zebrina. Stomata, 85. Leaves. Fresh. 



Trianea bogotensis. For circulation in root-hairs, 48. A warm-house aquatic. 

 Triticum durum (Wheat). Starch, 18. . Wheat grains. Dry. 



vulgare (Wheat). Structure of grain ; aleurone, 29 ; embryo, 417. 



Wheat grains. 

 Tropceolum majus (" Nasturtium," or Indian Cress). Colour bodies, 54. 



Flowers. Fresh. 



Water-pores, 88. Leave*. Fresh, and in alcohol. 

 Tulip. See Tulipa. 

 Tulipa. Development of pollen, 385. (Substitute for Hemerocallis, q.v.} 



Flowers. April and May. Fresh, and in alcohol. Development of 



pollen-tubes, 392. 



Structure of ovary, 396. Old flowers. Fresh, or in alcohol. 



