NEOTTIELLA. 



371 



margin composed of hyaline, septate, cylindrical, thin-walled 

 hyphae that are sometimes branched, 80-100 x 6-7 /*, the 

 hyphae are often arranged in little bundles ; excipulum 

 parenchymatous, cells elongated in the direction from base 



Neottiella polytrichi. Fig. 1, small specimens, natural size; Fig. 2, 

 specimen, x 5 ; Fig. 3, section of portion of excipulum, x 400 ; Fig. 4, 

 ascns with spores and paraphyses, x 400; Fig. 5, spores in various 

 stages of development, x 800. 



to margin ; cortical cells irregularly polygonal, 12-18 [^ 

 giving origin to the external hairs ; asci cylindrical, apex 

 slightly truncate, base rather suddenly narrowed into the 

 pedicel, 8-spored ; spores obliquely 1-seriate, hyaline, con- 

 tinuous, ends acute, with one large median oil-globule, for 



2 B 2 



