Explanation of Plates 375 



Lower figure (2). Ctidonia circinans. Photographed by Paul F. Shope 

 from material collected in Colorado in 1929, about natural size, with drawings 

 portion of ascus, spores, and paraphysis. 



Plate 83 (P. 50) 



Monilinia fructicola. Above, mummified fruits with conidia and young 

 apothecia; also drawings of conidia. Below, mummified fruits with mature 

 apothecia, about natural size; also drawings of ascus with spores and paraphy- 

 ses. Photographs furnished by Edwin E. Honey. 



Plate 84 (P. 54) 



Monilinia Seaveri. Center, branches of wild cherry showing leaves in- 

 fected with the conidial stage of the fungus Monilia Seaveri. Above, drawing 

 of the conidia. Below, several seeds with the apothecial stage, about natural 

 size. Left, ascus with spores and paraphysis. 



Plate 85 (P. 58) 



Upper figure (i). Seaverinia Geranii. Photograph of the rootstocks 

 of wild Geranium with growth of Botrytis. Center, drawing of a cluster of 

 conidia with some immature at the extreme left. 



Lower figure (2). Seaverinia Geranii. Photograph of a clump of apo- 

 thecia. Left, drawing of ascus with spores. Below, three spores germinating. 



Plate 86 (P. 60) 



Streptolinia Arisaemae. 21, concentricalh' arranged sclerotia from conidia 

 on potato agar, natural size; 22, conidia with typically twisted branches; 23, 

 upper surface of leaf of Arisaema triphyllum, natural size; 24, Botrytis strep- 

 tothrix on Oronlium aquaticum, structure of sclerotium. From H. H. Whetzel. 



Plate 87 (P. 68) 

 Martinia panamaensis. 1, conidia, developed on potato dextrose agar; 2, 

 two plantings of sclerotia showing tendency to aggregate and coalesce; 3, 

 stick with apothecia developed from sclerotia on bark in moist chamber, twice 

 enlarged; 4, apothecia developed from sclerotia grown on potato dextrose agar. 

 From H. H. Whetzel. 



Plate 88 (P. 70) 



Ciborinia bifrons. .Above, photograph of poplar leaves, showing shot- 

 holes, where the sclerotia had dropped out. Below, photograph of a number of 

 sclerotia producing apothecia. Photographs made from dried specimens, 

 about natural size. 



Pl.\te 89 (P. 72) 



Ciborinia Whetzelii. Above, sclerotia on leaf of Populus tremuloides. 

 Below, apothecia arising from sclerotia, natural size. From H. H. Whetzel. 



Plate 90 (P. 74) 

 Sclerotinia tuberosa. Above, photograph of several apothecia from New 

 York City, about natural size. Below, several apothecia removed from the 

 ground, with diagram showing position of sclerotia in the soil. Left, drawing 

 of ascus with spores and paraphysis. 



