а Ren cm 
1918] 
BURT—THELEPHORACEAE OF NORTH AMERICA. IX 201 
bushy, branched, cylindric, bottle-brush paraphyses about 
44 и in diameter over prongs, uniformly clothed for their 
length with such lateral outgrowths which are disorganized 
and dissolved by KHO solution but not affected by dilute 
hydrochloric acid nor lactic acid, and (2) deeply staining, 
cylindric organs usually 44-5 шіп diameter, sometimes clavate 
and then up to 9 шіп diameter; spores hyaline, even, 12-15» 
9-12 y. 
Fructifications 1-14 cm. broad, 7 em. long, and broken at 
both ends. 
On small dead twigs of frondose wood. Cuba. March. 
This species may be recognized at the time of collection by 
its snow-white color, very thin fructification which resembles 
a thin Corticium, and occurrence along one side of small dead 
twigs of frondose species; the small, even spores and bushy 
paraphyses whose bottle-brush outer surface is disorganized 
by treatment of preparation with KHO solution afford good 
distinctive. microscopical characters. Mature basidia, when 
found, may show that this species belongs in Sebacina rather 
than in Aleurodiscus—a view which seems the more probable 
because of the peculiar effect of KHO solution upon the 
paraphyses. 
Specimens examined: 
Cuba: C. G. Lloyd, 421, 422, type (in Mo. Bot. Gard. Herb., 
55178, 55179 respectively). 
13. A. penicillatus Burt, n. sp. 
Type: in Burt Herb. 
Fructification resupinate, effused, adnate, cracking in dry- 
ing, pale ochraceous-buff at first, becoming between light buff 
and pinkish buff in the herbarium, the margin determinate; 
in structure about 200 џ thick, composed of loosely interwoven, 
suberect, hyaline hyphae 3 џ in diameter, occasionally nodose- 
septate, not incrusted; hymenium composed of large, clavate 
basidia about 75X18 y, with large sterigmata, and of flexuous 
paraphyses about 6 u in diameter, of several forms, of which 
the most noteworthy have about the obtuse apex a cluster of 
about 12 acicular branches, each about 4 u long; spores hya- 
