Plate 14 



LECIDEA MELANCHEIMA TUCK. 



Fig. 1 plant. Fig. 2, apothecia and a portion of the thallus. Fig. 3, a section of an 

 apothecium'and part of the thallus; a, the hymenium; b, the hypothecium: c, the algal layer. 

 Fig. 4, a section of the thallus; a, the pseudocortex of entangled hyphae; b, the algal layers: 

 c °the' medullary layer. Fig. 5, paraphyses and an ascus. Fig. 6, free spores. Fig. 7, algal 

 cells. Fig. 1, natural size; fig. 2, enlarged about 10 diameters; figs. 3, 4, enlarged 425 diame- 

 ters; figs. 5,' 6, 7, enlarged 650 diameters. From Schneider. 



