[Vor. 5 
194 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
terminate, adnate; in structure 200—250 д thick, not stratose, 
composed of erect, interwoven, thin-walled, hyaline hyphae 
about 2 y in diameter, bearing a large amount of incrusting 
granular matter; hymenium consisting of basidia, gloeo- 
eystidia, paraphyses, and many inerusted hyphae; gloeo- 
eystidia clavate, hya- 
line, even, 18-3809 и; 
paraphyses about 2-3 и 
in diameter under the 
7 inerustation, cylindric, 
7 flexuous, more or less 
irregular in form, some- 
what corymbosely 
branched at surface 
E of hymenium and 
with branches loaded 
with crystalline matter; 
База clavate, 40-60 
4 12-16 и, only rarely 
ғ found, with 4 divergent 
sterigmata; spores hya- 
line, even, 15-20x12- 
Fig. 8. A. nivosus. Granule-bearing para- 16 А 
physes, g, after removal of the granular matter Fructifications 3-30 
dir gloeocystidia, gl; basidium, b; spores mm: long, about 9-6 
mm. broad. 
On bark of living trees, common on Juniperus virginiana, 
occurs also on Juniperus occidentalis and Chamaecyparis. 
Vermont to Texas, westward to Oregon, and in Jamaica. 
Throughout the year. 
A, nivosus is intermediate between A. candidus and A. 
acerinus, differing from the former by thinner and more 
elongated fructifications which are not at all stratose within, 
by inerusting matter not in the form of large, angular, crystal- 
line grains, by margin with no tendency to be free nor black- 
ening on under side, and by the common occurrence of the 
fructification on bark of living red cedar. It differs from A. 
acerinus by presence of gloeocystidia, which show best near 
