MYCOLOGY 



scattered, or aggregated and its aecia on seven species of Amelanchier , 

 one each of Aronia and Cydhnia. 



Gymnosporangium Ellisii (Figs. 74 and 75) in its telial form distorts 

 the younger branches of the white cedar, ChamcBcyparis thyoides, pro- 



FiG. 80. — Roestelia, or aecia on apple leaf. {After Giddings and Berg, Bull. 257, 

 Agric. Exper. Stat. Univ. Wise, July, 1915.) 



ducing numerous fasciations. The aecia and pycnia of this fungus 

 are on Myrica. Gymnosporangium globosiim is remarkable in forming 

 aecia on eighty-five different species of hawthorn, Cratcegus, while its 



