Biological Index. 
Sar 
Teleutospores— 
germination of, 42 
mother-cell, 39 
of Chrysomyxa, 42 
»» Coleosporium, 41 
>, Gymnosporangium, 42 
5» Phragmidium, 40 
», Puccinia, 38 
», Uromyces, 37 
», Xenodochus, 40 
Temperature, effect on— 
Puccinia spores, 109 
Uredo spores, 35 
Ustilago spores, 104 
Thalictrum flavum, 181 
Thecaphora hyalina, 86 
trailii, 296 
Thiimen, F., 258 
Tilletia decipiens, 284 
lathyri, 86 
strieeformis, 285 
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 
Trichogyne, 18 
Trifolium arvense, 134 
Triphragmium ulmariz, 19, 219 
Triticum repens, 181 
Tubercinia trientalis, 96, 294 
Tuberculina, 299 
Tulasne, L. R. and C., 13, 16, 72 
Tull, Jethro, 47 
Tussilago alpina, 217 
Unger, F., 16 
Uredinex, biology of, 1 
haustoria, 4 
mycelium, 4 
localized, § 
= perennial, 7 
spore-forms, 3 
spore-relationships, 3 
” 
Uredo fabze, 30 
frumenti, 47 
Uredo iridis, 258 
linearis, 30 
miilleri, 257 
phaseoli, 30 
serratulz, 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 
viole, 94 
Uromyces, teleutospores of, 37 
Urtica dioica, 170 
parvifolia, 7, 170 
Ustilagineze, infection of host-plants, 99 
Hoffmann’s views, 99 
Jensen’s views, 103 
Kiihn’s views, 99 . 
Wolff’s views, 100 
Ustilaginez, localization of spore-beds, 64 
mycelium, 58 
spore-formation, 61 
teleutospores, colour of, 69 
x5 formation of, 61 
” germ-pores, 70 
germination of, 72 
resistance of tempera- 
ture, 104 
35 structure of, 69 
Ustilago bromivora, 83 
cardui, 78, 296 
ficuum, 85 
flosculorum, 79 
grandis, 83 
ce” hypodytes, 80 
kiihneana, 80 
longissima, 81, 273 
major, 84 
