List oF Host-Prants. 
Abies, 40. 
Aesculus, 16 
A 
Arctium, 5 
Calystegia, 
Magnolia, 70. 
Malva, 35. 
Menispermum, 36. 
‘Philadelphus, 30. 
Phytolacca, 68. 
Podophyllum, 45, 
Polygonum, 46. 
Prunus, 47, 
» 09. 
Daal 60, 66, 82, 
87. 
Sarothamnus, 61. 
Scrophularia, a 
Solanum, 21, 76. 
phon 63. 
piraea, 64. 
Raphy lea, 5d, 84. 
§ymphoricarpus, 58. 
HS DDARPNRR™DM 
Vitis, 71.. 
EXPLANATION OF PLATES. 
Fig. 
1. P. Achilleae. 
2. P. Albicans. 
3. P. ambi 
4, P. Amelanchi 
5. P. Arctii; = spores b, B-spores. 
2. esse 
te By Cact 
8. Bareop hylli. 
go, pineizines; a, ? ascospore. 
ee | See 
t 
{ 
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