1918] 



BURT THELEPHORACEAE OF NORTH AMERICA. IX 



187 



outer end even and lateral prongs present at lower level of 

 hymenium; basidia clavate, up to 100x12-15 fi, with 4 prom- 

 inent sterigmata about 15 /x long; spores hyaline, unequi- 

 lateral, apiculate, minutely echinulate, 20-25x12-15 /x. 



Fig. 4. A. apiculatus. Flexuous paraphyses, f; paraphysea 

 with aculeate prongs, a; basidium, b; and spores, s. X870. 



Fructifications 2^10 cm. long, 6-15 mm. broad, with re- 

 flexed margin 1-1^ mm. broad. 



On bark of pole of frondose wood on ground at 5,000 ft. 

 altitude, and on dead limbs. Jamaica, Porto Eico, and Gre- 

 nada. November. 



Until microscopic examination of the sections was made, 

 the collections were regarded as consisting of large specimens 

 of A. Oakesii, which this species resembles in aspect but from 

 which it differs in spore characters and in the absence of mo- 



