Plate 4 



CONOTREMA URCEOLATUM (ACH.) TUCK. 



Fig. 1, a, an apothecium; b, the thallus. Fig. 2, an apothecium and a portion of the thallus 

 Fie 3 a section of an apothecium; a, the hymenium; b, the hypothecium. Fig. 4, a section ot 

 the 'thallus; a, the pseudocortex of entangled hyphae; b, the layer of algal cells and hyphae 

 below. Fig. 5, paraphyses and an ascus. Fig. 6, free spores transversely septate; a, the exospon- 

 unv b, the cell lumina. Fig. 1, natural size; fig. 2, enlarged about 20 diameters; ngs. 6, 4, 

 enlarged about 400 diameters; figs. 5, 6, enlarged 650 diameters. From Schneider. 



