Biological Index. 



3/ 



Teleutospores — 



germination of, 42 



mother- cell, 39 



of Chrysomyxa, 42 



,, Coleosporium, 41 



,, Gymnosporangium, 42 



,, Phragmidium, 40 



,, Puccinia, 38 



„ Uromyces, 37 



,, Xenodochus, 40 

 Temperature, effect on — 



Puccinia spores, 109 



Uredo spores, 35 



Ustilago spores, 104 

 Thallctrum flavum, 181 

 Thecaphora hyalina, 86 



trailii, 296 

 Thlimen, F., 258 

 Tilletia decipiens, 284 



lathyri, 86 



striseforniis, 2S5 



tritici, 86 

 Tragopogon porrifolius, 198 



pratensis, 17, 198 

 Trail, Professor J. W. H., 126, 127, 172, 

 203, 208, 215, 241, 262, 284, 291, 

 296, 299, 300, 301 

 Trichobasis, 31 

 Trichogj'ne, 18 



Trifolium arvense, 134 ' 



Triphragmium ulmarioe, 19, 219 ^ 



Triticum repens, 181 

 Tubercinia trientalis, 96, 294 

 Tuberculins, 299 

 Tulasne, L. R. and C, 13, 16, 72 

 Tull, Jethro, 47 

 Tussilago alpina, 217 



linger, F., 16 

 Uredinese, biology of, i 

 haustoria, 4 

 mycelium, 4 



,, localized, 5 



,, perennial, 7 

 spore-forms, 3 

 spore-relationships, 3 



Uredo fabce, 30 

 frumenti, 47 



Uredo iridis, 258 



linearis, 30 



mlilleri, 257 



phaseoli, 30 



serratulse, 13 



suaveolens, 12, 30, 103 



symphyti, 36 

 Uredospores, 28 



colouring matter, 31 



development of, 28 



germ-pores, 30 



paraphyses, 33 



primary, 45 



quantity, 34 



resistance of cold, 35 



structure, 29 

 Urocystis anemones, 94 



colchici, 68 



fischeri, 93 



occulta, 93 



primulicola, 95 



violce, 94 

 Uromyces, teleutospores of, 37 

 Urtica dioica, 170 



parvifolia, 7> 17° 

 Ustilagineae, infection of host-plants, 99 



Hoffmann's views, 99 



Jensen's views, 103 



Klihn's views, 99 



Wolff's \'iews, 100 

 Ustilaginea;, localization of spore-beds, 64 



mycelium, 58 



spore-formation, 61 



teleutospores, colour of, 69 



„ formation of, 61 



„ germ-pores, 70 



,, germination of, 72 



,, resistance of tempera- 



ture, 104 

 ,, structure of, 69 



Ustilago bromivora, 83 



cardui, 78, 296 



ficuum, 85 



flosculorum, 79 



grandis, 83 



hypodytes, 80 



kiihneana, 80 



longissima, 81, 273 



major, 84 



