1926] 



BURT THELEPHORACEAE OF NORTH AMERICA. XV 279 



89. C. adhaesum Burt, n. sp. 



Type: in Mo. Bot. Gard. Herb. 



Fructifications effused, closely adnate, rather thick, not separ- 

 able, between drab and deep olive-buff, somewhat granular, pul- 

 verulent, cracked at intervals of 1-2 nun., the margin abrupt; 

 in section 250-350 \l thick, chamois-colored within, composed of 

 densely arranged, thick- walled, erect and interwoven hyphae 3- 

 3J^ \l in diameter, not incrusted, not nodose-septate, conglutinate 

 and not showing structure well; no gloeocystidia; spores hyaline, 

 even, flattened on one side, 3J^ 6 X 23^-3 {*., copious. 



Fructifications 6 cm. long, 2 cm. wide. 



On rough surface of badly decayed wood of a frondose species. 

 Mexico and West Indies. Probably rare. 



C. adhaesum is separated from the most of our species by having 

 its fructifications colored within to such a degree that the thin 

 sections are somewhat chamois-colored. The drab color of the 

 hymenium and gluing together of the hyphae in sections are other 

 distinctive characters. 



Specimens examined: 

 Mexico: Jalapa, W. A. & E. L. Murrill, 64, comm. by N. Y. Bot. 



Gard. Herb, (in Mo. Bot. Gard. Herb., 16479). 

 Porto Rico: Rio Piedras, /. A. Stevenson, 5577 (in Mo. Bot. 



Gard. Herb., 11059). 

 Jamaica: A. E. Wight, comm. by W. G. Farlow, C 1, type (in 



Mo. Bot. Gard. Herb., 44005). 

 Trinidad : Port of Spain, R. Thaxter, comm. by W. G. Farlow, 22. 

 Grenada: Grand Etang, R. Thaxter, comm. by W. G. Farlow, 121. 



90. C. leptaleum Ell. & Ev. in Millsp. & Nutt. Field Mus. 

 Publ. Bot. 1: 170. 1896; Sacc. Syll. Fung. 14: 220. 1899. 



Type: in N. Y. Bot. Gard. Herb. 



Fructifications effused, adnate, membranaceous-soft, contract- 

 ing in drying so that only one-half the original area is covered, 

 cracking into masses 2-3 mm. in diameter and curling up from 

 substratum so as to resemble cups of a Peziza, grayish white, 

 becoming pinkish buff in the herbarium, pulverulent; in section 

 300 [a thick, composed of densely interwoven hyphae 3-3}^ \l in 

 diameter, incrusted in the subhymenium, only rarely nodose- 

 septate; no gloeocystidia; spores hyaline, even, 8-10 X 3-4 [l. 



