ASCOMYCETES 371 



Spores muriform. 



Pleospora, Rabenh. Perithecia scattered or subgre- 

 garious, immersed, or erumpent through the epidermis, 

 spherical, ostiolum generally papillate, glabrous, membran- 

 aceous, rarely hard (Sckropled} ; asci clavate, 4-8-spored ; 

 spores elongated, yellowish, or fuliginous, rarely hyaline 

 ( Catharinid] ; conidia, pycnidia, and spermogonia some- 

 times present. 



Pleospora gummipara, Oud., Hedw.^ 1883, p. 162. 

 Perithecia formed in the neighbourhood of the pycnidia 

 and conidia, black, glabrous, globose, J-J mm. diam., 

 membranaceous, sometimes bearing sessile Coryneum 

 conidia on the surface; asci 90 x 18-20 //, 8-spored; spores 

 biseriate, 3-septate, constricted at the septa, then becoming 

 muriform, dark brown, 24X12 ^ ; paraphyses absent; 

 pycnidia, conceptacles resembling the perithecia, conidia 

 brown, continuous, then transversely septate, finally muri- 

 form, about 7 p diam. 



Conidia = Coryneum gummiparum, Oudem., Hedw., 1883, 

 p. 131. Fruit clusters very minute, dotlike, black, 

 gregarious ; conidia springing from a brownish prosenchy- 

 matous cushion, oblong or oblong-ovate, pale smoky-olive, 

 3-septate, slightly constricted at the septa, 14x6^; conidio- 

 phores colourless, shorter than the conidia. 



Hypocreaceae. Perithecia free, or more or less immersed 

 in a somewhat soft, fleshy, waxy, or rarely a byssoid stroma, 

 somewhat fleshy, or waxy-membranaceous, generally reddish 

 (rarely bluish, olive-yellow, or pallid), never carbonaceous, 

 mouth distinct ; asci 4-8-many-spored, usually containing 

 8 spores ; secondary conditions of fruit frequent. 



