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Pl, cell.aph. 4. CENOTHALAME.. 120. Phacotr.. 483° 
2. Phacotrum claviculare. —— Nail-head phacotrum. 
Crust spreading, granular, slightly powdery, greyish; 
apothecia nearly globular, afterwards lentilshape, greyish- 
black; podicils cylindrical, thickish, black. 
Lichen clavicularis, Engl, Bot. 1465, 
Calicium salicinum, Persoon in Ust. Ann. 7, 20. 
Calicium claviculare, Achar. Meth. 90; Lich. 234. 
On beams, rafters, and the bark of old trees. 
3. Phacotrum spherocephalum.  Round-head phacotrum. 
Crust very thin, smooth, greyish; apothecia nearly lentil- 
shape; centre brownish, edge greyish; podicils threadlike, 
black. 
Coralloides fungiforme arboreum nigrum, vix crustosum, Dillen Musc- 
Mucor lichenoides, Lin. S. P. 1655. 
Lichen spherocephalus, Swart. N. Act. Ups. 4; Engl. Bot. AlA4. 
Trichia lichenoides, Sibth. Oxon. 406. 
Clathrus cinereus, Huds. Fl. Angl. 63). 
Calicium claviculare spherocephalum, Achar. Lich, 255. 
Calicium spherocephalum, Achar. Meth. 91. 
On palings. 
4. Phacotrum hispidulum. Roughish phacotrum.. 
Crust thin, greenish; apothecia cupshape, as well as the 
centre roughish with a flocklike rust-coloured powder. 
Calicium trachelinum hispidulum, Achar. Lich. 237. 
On the bark of trees. 
5. Phacotrum hyperellum. Bark phacotrum. 
Crust cartilaginous, wrinkled in beds, bald, greenish- 
yellow; apothecza lentilshape, rust-colour, powdery; podi- 
cils thick, cylindrical, pitch-black, thickest at bottom. 
Lichen hyperellum, Achar. Prod. 85; Engl. Bot. 1832, 
Calicium hyperellum, Achar, Meth. 93; Lich. 237. 
On the bark of trees. 
Sporidia combined in pairs. 
B. roscidum. Crust granularly wrinkled, greenish or 
greyish; apothecia lentilshape, with a rust-colour powder, 
underneath greyish, afterwards irregular, conglomerated 5 
podicils thick, short, biack. 
Lichen graniformis, Dickson Crypt.1,10; Engl. Bot, 1464. 
Calicium claviculare roscidum, Achar. Meth. 90. 
Calicium hyperellum roscidum, .4char. Lich, 238, 
On the bark of trees, and timber-work. 
212 
