182 FETCH : 



I have examined the type specimens of Moelleriella sulphurea 

 and Hypocrella Edtvalliana in Herb. Berlin, and have no 

 doubt that they are, as stated by Moller, the same species. 

 In many cases the asci do appear polysporous from the 

 beginning, but that is not really the case. This species 

 differs from the majority of the species of Hypocrella in having 

 its filiform spores wound in a very flat spiral, so that many 

 turns occur in the length of the ascus. This is not a constant 

 feature, even in specimens of the same collection. It would 

 seem that this arrangement of the spores, crossing one another 

 at frequent intervals, has produced the appearance of 

 irregularity and led to the interpretation that the asci are 

 polysporous. 



The Pyckidia. 



The pycnidia exhibit greater variation than the perithecia. 

 In the Lecaniicolse they are usually flask-shaped, or oval, or 

 tubular. In small forms of Ascliersonia cubtnsis they are 

 globose, while in larger stromata of that species, and in 

 Hypocrella cavernosa, they may be ovoid and flattened parallel 

 to the surface. In Hypocrella Reineckiana and Hypocrella 

 cavernosa the tubular pycnidia may penetrate almost to the 

 centre of the stroma, and in both these species, as well as in 

 Aschersonia turbinata, they may be branched. 



The pycnidia of the Lecaniicolse differ from the perithecia 

 in not possessing a well-differentiated wall. The hyphse of 

 the stroma become more or less parallel and converge towards 

 the pycnidium, and from this palisade layer the basidia arise. 

 In the discoid species of the Aleyrodiicolse, the pycnidia have 

 a wall of parallel hj^ahse resembling that of the perithecium, 

 but very thin. 



The immatm'e stromata of Hypocrella Reineckiana frequently 

 acquire a glaucous " bloom," which rubs off when the fungus 

 is handled. This, as previously stated by Parkin, is due to 

 the production of a superficial layer of conidia. The basidia 

 of this external laj^er are scattered, not crowded as in the 

 normal pycnidia, and the conidia are rather smaller than the 

 usual pycnospores. This occurrence of conidia on the exterior 



