Plate 28 



AN ACAROSPORA 



Fig. 1, a, the apothecia; b, the thallus on the substratum. Fig. 2, a single apothecium and 

 a small portion of the thallus. Fig. 3, a section of an apothecium and part of the thallus; a, 

 the hymenium; b, the hypothecium; c, the plectenchymatous medullary layer. Fig. 4, a section 

 of the thallus; a, the upper cortex; b, the algal layer: c, the plectenchymatous medullary layer; 

 d, the hyphal rhizoids. Fig. 5, paraphyses and an ascus. Fig. 6, free, non-septate spores. Fig. 7 

 algal cells; a, as they occur in the thallus; b, normal size. Fig 1, natural size; fig. 2, enlarged 

 about 35 diameters; fig. 3, enlarged 400 diameters; fig. 4, enlarged 300 diameters; figs. 5 and 

 6, enlarged 650 diameters; fig. 7, enlarged a, 650 diameters: b, 500 diameters. From Schneider. 



