AUSTRALIAN FUNGI. 
193 
fluent, marginate, externally white, tomentose (4-6 m.m.) ; hyme- 
nium even, continuous, growing pallid ; spores globose-ellipsoid, 
nucleate, hyaline, 26x23 p, rough when mature, on elongated 
clavate asciform basidia, filled with brown corpuscles. 
On fir trunks and branches. Queensland. 
1062. Aleurodiscus albidus. Mass. Grev. xvii., 55. 
At first cup-shaped, white, margin erect, tomentose, indexed, 
then expanded and flattened, and often confluent (2-3 lines diam., 
or confluent, ^-f in.) ; hymenium white, rather powdery, here and 
there cracking when dry ; spores ellipsoid, 10-12 X 9 p. 
On branches. Queensland. (Fig. 83). 
1063. Aleurodiscus tabacinus. Cooke Grev. 1885, p. 11. 
Sacc. Syll. 7510. 
Erumpent, cup-shaped, gregarious, pileus rather elliptical (2-3 
m.m.), rugose, crispate, brown, tomentose ; margin rather thick, 
paler, connivent, hairs straight, rather rigid (100 p long) ; basidia 
clavate-cylindrical, guttulate ; spores elliptic, continuous, granular 
(25-28x10 p). 
On wood. Victoria. N.S.Wales. 
Genus 55. COUTICIUM. Fries. 
Hymenium covering the whole free surface, even or tuberculose, 
waxy, smooth, arising immediately from the mycelium, without an 
intermediate stratum. Spores hyaline. 
a. Margin free, determinate, marginate. 
b. Immarginate, margin and substratum, byssoid or strigose. 
1064. Corticium calceum. Fr. Hym. Fur. 652. Mass. 
Mon. Thel. 127. Sacc. Syll. 7596 (including Cort. cretaceum, 
Pers.) 
Broadly effused, adglutinate, waxy, smooth, white, margin 
similar; hymenium even, cracking when dry, pallid; spores 
cylindrically ellipsoid, 8x4 p. 
On wood and branches. Tasmania. 
1065. Corticium sebaceum. Pers. Mass. Mon. Thel. 127. 
=Thelephora sebacea. Pers. Sy?i. 577. Sacc. Syll. 7162.= 
Sebacinia incrustans. Tul. Ann. Sci. Nat. 1872. 
Effused, fleshy or waxy, becoming hard, incrusting and variable 
in form, tuberculose, stalactitic, whitish, margin similar (5-8 c.m. 
broad) ; hymenium collapsing, flocculose, pruinose. Spores ovate, 
kidney-shaped, granulose, hyaline, 10-12 x 6-7 p. 
On the ground and stems of plants. Tasmania. 
1066. Corticium simulans. Berk. §' Br. Linn. down, xiv., 
72. Muss. Mon. Thel. 128. Sacc. Syll. 7593. 
Soft, fulvous, springing from a white, membranaceous, floccose 
mycelium; hymenium smooth ; spores oblong-ellipsoid, 8 X 4 p. 
Running over moss and twigs. Victoria. 
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