1919] 



ZELLER AND DODGE — ARCANGELIELLA, GYMNOMYCES, MACOWANITES 51 



lateral branches, concolor- 

 ous and continuous with 

 the base, the few lactifer- 

 ous ducts smaller than in 

 the base ; gleba fleshy, Isa- 

 bella - color to brownish 

 olive, exposed near the 

 base in older specimens; 

 cavities small and irregu- 

 lar, somewhat radiating 

 from the base and colu- 

 mella; septa hyaline, con- 

 sisting of loosely inter- 

 woven, hyaline hyphae, 

 few lactiferous ducts, 50- 

 65 n broad; cystidia hya- 

 line, large, clavate; pa- 

 raphyses cylindrical, ob- 

 tuse, hyaline, septate, 19- 

 20x4^5 n ; basidia hyaline, 

 slender, clavate, 2-4- 

 spored, 24^26x9-13 /*; 

 sterigmata short, stout, 

 3-6 n long; spores mostly 

 ovate to ellipsoid, one 

 large vacuole, exospore 



thick, verrucose - rugose, 

 pedicellate, yellow ocher 

 to ochraceous-tawny, 12- 



14.5X9-11.5 M- 



In leaf mould of Quer- 

 cus agrifolia. California. 

 November. 



The characters of the 

 spores, columella, and 

 peridium distinguish 

 Arcangeliella can data 

 from the two other species 



Fig. 1 



A, caudata. 



Section of peridium and hymenium; spores 



X750. From type. 



