PERI SPORI ALES 211 



surprising clearness. In the arrangement of asci, Parodiopsis shows 

 marked Perisporial characters; by the brown color and the behavior 

 of the mycelium and by the possession of an ostiole it suggests the 

 Amphisphaeriaceae of the Sphaeriales (Fig. 133, 2) ; and by the form and 

 color of its perithecial wall, it would belong in the Hypocreales. As in 

 both previous genera, the aerial mycelium emerges as a brown covering 

 on the under side of a leaf and forms a liberal intramatrical mycelium 

 through well-developed stomatopodia (Fig. 134). The perithecia are 

 ochraceous, solid and generally rise above the stomata. If one imagines 

 them entirely ingrown, so that the hyphal tissue in the stoma thickens 

 into a prosenchymatous tangle, one has the Mycosphaerellaceae which 

 we will discuss under the Sphaeriales. 



Fig. 135. — Englerula Macarangae. Immature perithecium. ( X 130; after Hoehnel, 1909.) 



Englerulaceae. — The only well-known representative of this family, 

 Englerula Macarangae in East Africa, forms light brown coverings on 

 Macaranga leaves (Hoehnel, 1909). In the young stage, the perithecia 

 are spherical, without opening, and surrounded by a single-layered, 

 brown rind formed of polyhedral cells. During the development of the 

 three to five asci, the perithecial ground tissue gelifies. The gel is tough 

 and swells much in water without dissolving. The outside of the perithe- 

 cial wall differentiates a sharply defined, often nearly cuticular, slime 

 layer. 



The separation of the rind cells begins in the upper half of the peri- 

 thecia so that, singly or in small groups, they are loosely imbedded in the 

 slime or float upon it (Fig. 135). This process gradually continues, 

 toward the bottom. At the bases this histolysis does not occur. Hence 

 the mature perithecia are open above and surrounded by a hyaline, 

 structureless gel into which the asci project. 



The remaining representatives are less known than this species 

 (Theissen, 19166), hence an opinion as to their morphological relationships 

 is not possible. Possibly they are connected to forms like Balladijna. 



