32 PARKIN : FUNGI PARASITIC 



correct in his identification of the fungus, it is an interesting 

 fact, for the Diaspidinae, to which the San Jose scale belongs, 

 do not secrete " honey dew ;" thus the fungus can hardly 

 in this case be growing upon such excretion. 



Plectasciriece. 



Genus Myriangium, Mont, and Berk. 



A black fungus referable to this genus has often been 

 observed in Ceylon on the surface of leaves and stems asso- 

 ciated with Coccidas. 



Ziinraermann* has come across a similar fungus at 

 Buitenzorg in Java on leaves of Coffea liberica and Elceis, 

 sp., and associated with the scale Ichnaspis filiformis. He 

 names it Myriangium Duricei, Mont, and Berk. 



The genus in "Die Pflanzenfamilienf " has a special 

 tribe to itself, the MyriangiaceaB, which is attached to the 

 Plectascineae, one of the main divisions of the Ascomycetes. 

 Three species are mentioned there. Others have been added 

 since.! 



The fungus consists of a moderate amount of hard pseudo- 

 parenchymatous black stroma situated on the surface of 

 leaves or stems. From this the peritheciagrowoutas circular 

 protuberances compressed together. It has no ostiole like 

 the true Pyrenomycetes, but when ripe its hard wall breaks 

 away scattering the spores. The asci are not borne on a 

 special hymenium in the perithecium, but irregularly distri- 

 buted througli a ground tissue filling the receptacle. The 

 inner part of the wall of the ascus is mucilaginous, and by 

 the swelling of this it bursts and the spores are released. 

 Thejiscospore is hyaline, multicellular, muriforin with slight 

 constriction in the middle. 



The Ceylon form has perithecia measuring in height 

 800-375 and in breadth 420-675 //, asci ovate to globular 



* Ziinrnennann, loc.cit. 

 f Teil I.. AMh. I., p. 819. 



I II.nniiiL's. Eediwjgia, XLI., Beiblatt 2, 1902, p. 54. McAlpiuc. 

 Australian fungi, two Q8W species of M.vri:iiigiuui," Linn. Soc. N.S.W. 

 April 27. 1904. 



