LESS IMPORTANT DISEASES. 47 



in diameter Iby 100 to 150 //, thick, and sometimes collapse from above 

 (PL Y, fig. 25). No signs of an ostiole have been seen, and the 

 manner in which the pycnidium ruptures is not known. The spores 

 are pale greenish yellow in mass, continuous, subelliptical, and some- 

 what curved, 6 to 8 by 2 to 2.5 /*. They are borne on simple, taper- 

 ing sporophores about twice the length of the spores (PL V, figs. 27 

 and 28). The pycnidia bear a close resemblance to immature speci- 

 mens of Lophodermium melaleucum (Fr.) De Not., and it may be 

 the pycnidial stage of this or the closely related Lophodermium 

 oxycocci (Fr.) Karst. This fungus is closely related to Sporonema 

 epiphylliim (Fr.) Shear 24 , but has larger pycnidia and smaller 

 spores, which are less curved and without a pseudoseptum. 



Rhabdospora oxycocci Shear. 24 This fungus has been found on 

 leaves still adhering to old cut vines collected in September and 

 November near Whitesville, N. J. The pycnidia are formed beneath 

 the epidermis on the under side of the leaf and are quite evenly dis- 

 tributed over its surface. They are depressed-globose, slightly 

 erumpent, and somewhat cushion shaped, 150 to 225 ^ in diameter. 

 The wall consists of two layers, w T hich sometimes separate, the inner 

 collapsing and expelling the spores (PL V, figs. 21 and 22). The 

 ostiole is plain or slightly depressed and the epidermis above the 

 pycnidia is blackened and transformed by the fungus. The pycno- 

 spores are hyaline, narrow cylindric-fusiform, and slightly curved. 

 They show one or two septa or pseudosepta at maturity and measure 

 20 to 26 by 2 to 3 //,. The sporophores are slender and branched 

 (PL V, figs. 23 and 24). This fungus has not yet been found 

 attacking the berries. 



Leptothyrium oxycocci Shear. 24 This fungus has been collected 

 several times on living and dead leaves. It was first sent from 

 Pierceville, Mass., by Mr. H. J. Franklin, May 22, 1906. The pycni- 

 dia are dimidiate, scattered, irregular, black, erumpent, subsuperfi- 

 cial, collapsing and rupturing irregularly, or breaking free about the 

 base, 160 to 250 ^ in diameter (PL V, figs. 29 and 30). The wall of 

 the pycnidium shows a more or less parallel series of cells in its struc- 

 ture (PL V, fig. 31). The spores are hyaline, fusiform-elliptic, uni- 

 septate, 10 to 15 by 2.5 to 3 p and borne on slender, tapering sporo- 

 phores (PL V, figs. 32 and 33). 



Ceuthospora (?) lunata Shear. 24 This fungus has been collected 

 several times on dead and dying cranberry leaves. It was first found 

 by the writer near Wareham, Mass., in September, 1902. It has also 

 been collected at Carver and Onset, Mass., and near Whitesville, N. J. 

 The pycnidia are scattered, depressed-pulvinate, slightly erumpent, 



ffl Since the above paragraph was written, this fungus has been found on old 

 mummied fruit at the same place where the other specimens were collected. 

 110 



