28 PARKIN : FUNGI PARASITIC 



There seems to be some ambiguity as to the characters of 

 the genus ttpha?rostilbe. In Landau's scheme of classifica- 

 tion of the Hypocreales (Die Pflanzenfamilien, Teil I., Abth. 

 I., p. 347) the tribe Nectriere is divided into two main divi- 

 sions, viz., genera which have Stilbum-like conidial fructi- 

 fications and those which have not. The former contains 

 amongst several others the genus Sphserostilbe, while the 

 latter includes Nectria. In other respects these two genera 

 are alike. On this basis how can the above species be 

 reckoned a Sphasrostilbe, when it has the Microcera form of 

 conidial fructification ? Should it not be rather put in the 

 genus Nectria ? It seems to me in any case hardly justi- 

 fiable to separate Ascomycetous genera merely on differences 

 in their conidial fructification, especially as the same species 

 may possess more than one type of conidiophore. To me it 

 would be sounder policy to construct genera only on dis- 

 tinctive features in the ascus-stage and to use differences in 

 the lower kind of fructification for subdivisions within the 

 genus. Consequently I should be inclined to refer the 

 species in question to the genus Nectria, and at the same 

 time to incorporate with it the other species of Sphserostilbe 

 as well, provided that no common feature can be found in 

 the perithecium and its contents to distinguish these forms 

 from those of Nectria. The scale-insect fungi of the conidial 

 genus Microcera will bo described in detail in the part 

 devoted to the Fungi-imperfecti. 



(Jenus Broomclla y Sacc. 



This genus is characterized by having its perithecia 

 partially sunk in a fleshy stroma, but its ascospores are not 

 thread-like as in Hypocrellaand Cordiceps. A new species 

 named B. Ichnaspidis, has been found by Zimmermann* 

 on ;i scale-insect, Ichnas/us Jiliformis, on leaves of Coffea 

 liberica and K/aiis, sp., at liuitenzorg, Java. Its ascospores 

 are many celled (up to 1(1). 



* Ziuiiiicniiaiiu, ioc, iti . 



