78 
K. MIYABE AND K. SAW ADA. 
In Floridia, the present fungus has been successfully employed for control- 
ling the white-fly (Aleyrodes citri) infesting orange trees. 
Aschersonia Aleyrodis has been known so far only from the Southern 
States of the United States and West Indies. Among Parki n’s (19) Ceylon 
forms of Aschersonia , there are some which are said to resemble the W e b b e r’s 
species; of which the forma 1. approaches most closely to our plant. They 
may prove identical after a careful comparative study. 
Aschersonia marginata Ell. et Ev. (PI. YI. fig. 8-15). 
Ellis & Everhart, Bull. Torrey Bot. Club, 22, (1895), p. 436; 
Saccardo, Sylloge Fungorum, 14, (1899), p. 989. 
Aschersonia sp. Nish id a, Diseases of Orange-trees. (1907), p. 76. 
Stroma amphigenous or caulicolous, sessile, adnate, hemispherical to 
depressed subspherical, dark to black colored, narrowly marginate around the 
base or not, smooth or somewhat verrucose, 1—5 mm. in diameter, interior 
cream-colored, sclerotioid formed of thick-walled mycelium, 4-8// in diameter. 
Pycnidia irregular in shape, 4-19, immersed in the stroma, opening by small 
roundish pores at the surface, 40-300// in diameter; conidiophores filiform, 
subumbellately branched, continuous, densely packed together, 18-30// xl//; 
stylospores fusiform, small, continuous, hyaline, 6-8// x 1—1.5//. Paraphyses 
wanting. 
Hab. On Coccus longulus Dougl. and Parlatoria zizyphi (Lucas) 
Sign, infesting Citrus nohilis Lou r. and Psidium Guyava L. 
Formosa : Tennaiho, Taihoku, on Citrus nobilis (Inao Nitobe, May 
1, 1911; Y. Fujikuro, May 8, 1911). Roppo, Giran, on Psidium Guyava 
(R. Suzuki, Feb. 29, 1908). 
Distrib. Sandwich Islands and Japan. 
Remarks. Ellis and Everhart (9) in describing the present species 
were not aware of the fact that the fungus is entomogenous. The original 
specimens were collected by Heller on the living leaves of a species of 
Psidium in the Sandwich Islands. 
