490 123. Rhizom. 5. IDIOTHALAMEZ. Pl. cell. aph. 
10. Rhizomorpha Martini. Martin’s root-moss. 
Thallus brown, brittle, woody, in round threads branch- 
ing in all directions, serpentine, hairlike and matted. 
Rhizomorpha Martini, Sowerby Engl. Fungi, 431, 3. 
In mines. 
11. Rhizomorpha medullaris. Pith root-moss. 
Thallus cylindrical, very much branched, inside snow- 
white; cellules yellowish. 
Rhizomorpha medullaris, Smith in Lin. Tr, 12. 
In an old well upon boards. 
B. Varrotarip#&. Thallus crustlike; apothecia wartlike ; 
perithecium 0. 
TI. 124. VARIOLARIA. Persoon. Smallpox-moss. 
Thallus crustlike, flat, expanded, uniform; apothecia 
wartlike, formed of the thallus, most commonly soredium- 
like, slightly bordered, white; macleus naked and without 
a perithecium, compressed, cellular, hidden in the sub- 
stance of the wart, and usually covered with the thallus, 
sometimes becomes uncovered.— Soredia very numerous. 
1. Variolaria velata. Veiled smallpox-moss. 
Crust regular, rather cartilaginous, bald, very white, 
nearly radiately plaited; apothecta smooth, compressed, 
swollen; nucleus rather lentilshape, covered above with a 
thin powdery veil. 
Parmelia velata, Turner in Lin. Tr. 9, 143. 
Lichen velatus, Engl. Bot. 2062. 
Variolaria velata, Achar. Lich. 319. 
On the bark of trees. 
2. Variolaria multipuncta. Dotted smallpox-moss. 
Crust rather cartilaginous, cracked in beds, granular, 
greyish; apothecia convex, crowded, granulated; nucleus 
lentilshape, enclosed. 
Variolaria multipuncta, Turner in Lin, Tr. 9,137; Achar. Lich, 321. 
Lichen multipunctus, Engl. Bot. 2061. 
On the bark of trees. 
3. Variolaria globulifera. Globule smallpox-moss. 
Crust rather cartilaginous, greyish, sprinkled irregularly 
with granules and soredia, uneven; apothecia nearly glo- 
bular, bald, becoming depressed above, bearing soredia ; 
nucleus concave, enclosed. 
