488 133.Rhizomor. 5. IDIOTHALAMEiE. Pl. cell. aph. 
Lichenoides non tubal osurn ramosissiroum, fruticuli specie, cinereo- 
fuscurn, Raii Syn. 65, 10. 
Lichen fragllis, Lin. S. P. 1621 ; Engl. Bat. 114. 
Lichen melanocarpos, Swartz Inch Occid. 147. 
Sphserophoron compressum, Achar. Meth. 135; Lick. 586. 
On rocks and heaths in mountainous places. 
II. 123. RHIZOMORPHA. Root-moss. 
Thallus cartilaginous, membranaceous, cylindrical, 
branched repeatedly, creeping, prostrate, inside towlike 
fibrous; apothecia globular, sessile, frequently conglome- 
rated, formed of the cortical part of the thallus, opening 
irregularly, filled with powder. 
1 . Rhizomorpha subcorticalis . Bark root-moss , 
Thallus compressed, blackish-brown, shining; branches 
scattered, anastomosing in a network; apothecia conglo- 
merate. 
Fungoides q. Fungus niger compressus, varie divaricatus et implexus, 
inter lignum et corticem, Raii Syn. 15,9. 
Lichen aidaelus, Humboldt FI. Frib. 33. 
Clavaria phosphorea, Sowerby Fungi, 100. 
Rhizomorpha fragilis, Roth Cat. Bot. 1,252. 
Rhizomorpha subcorticalis, Persoon Syn. Fung. 704. 
On the trunks of dead trees, especially firs; also in 
cellars. 
Thallus luminous in the dark, at the ends of the branches. 
(3. patens . Thallus dilated, broad, compressed. 
Rhizomorpha patens, Sowerby Engl. Fungi, 392, 1 and 2. 
2. Rhizomorpha spinosa. Thorny root-moss. 
Thallus cylindrical, slightly compressed, spinous, dull- 
brown ; branches scattered, frequently anastomosing. 
Clavaria hypoxvlon, Withering Bot. Arr . 4,404. 
Rhizomorpha spinosa, Achar. Lich. 588 ; Sowerby Fungi , 299. 
In lead-mines. 
3. Rhizomorpha subterranea. Underground root-moss. 
Thallus cylindrical, bald, black, very much branched ; 
branches and twigs crowded, pointed, free. 
Lichen radiciformis, Lin. Syst. Nat. ed. 2, 984. 
Usnea radiciformis, Scopoli Diss. 1,95. 
Rhizomorpha subterranea, Achar. Lich. 588. 
On half-rotten wood and stones in mines. 
4. Rhizomorpha dichotoma. Forked root-moss, 
Thallus cylindrical, greenish-brown; branches forked, 
spreading, long, cylindrical, naked, free. 
