[Vol. 12 

 228 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



comm. by N. Y. Bot. Gard. Herb, (in Mo. Bot. Gard. Herb., 

 62102, 62103). 



12. P. irregularis Burt, n. sp. 

 Type: in Mo. Bot. Gard. Herb. 



Fructifications effused, very thin, adnate, fiocculent, tender, 

 white, interrupted, somewhat lacunose, not shining, the margin 

 thinning out, with hyphae interwoven; in section 45-75 y. thick, 

 not colored, composed of interwoven, hyaline, incrusted hyphae 

 2 J/2 (a m diameter; no gloeocystidia; cystidia incrusted with 

 coarse granules, 15-22 X 8-12 \l, barely protruding, confined to 

 the hymenium; spores hyaline, even, 4J^ X 2% V-, borne 4 to a 

 basidium. 



Fructification &/% cm. long and broken off at one end, 1 cm. 

 wide. 



On bark of a rotten frondose limb about 7 mm. in diameter. 

 Cuba. December. 



P. irregularis is a thin, white species of fiocculent texture 

 rather than waxy, with the dark substratum visible in small 

 spaces not covered by the fructification. 



Specimens examined: 

 Cuba: near Havana, C. J. Humphrey, 2953, type (in Mo. Bot. 



Gard. Herb., 9010). 



13. P. albofarcta Burt, n. sp. 



Type: in N. Y. Bot. Gard. Herb., Mo. Bot. Gard. Herb., and 

 Burt Herb. 



Fructifications effused, adnate, dry, spongy-membranaceous, 

 light buff to pinkish buff in the herbarium, minutely velutinous 

 under a lens, even, but little cracked, the margin thinning out, 

 minutely tomentose; in structure 200-350 y. thick, not colored, 

 composed of a broad layer of loosely interwoven, rather rigid 

 hyphae 3-3}^ ^ in diameter, not incrusted, not nodose-septate, 

 and of a dense hymenial layer about 100 ^ thick; no gloeocystidia; 

 cystidia incrusted, slender-fusiform, 50-90 X 6-9 n, protruding 

 up to 30 [l, numerous in all parts of the hymenial layer; spores 

 hyaline, even, spherical, 3-4 ^ in diameter, only few found but 

 seem to belong. 



