484 120. Phacotr. 4. CENOTHALAMEiE. Pl.ceil.aph. 
6. Phacotrum chrysocep/ialum; Gold-head phacotrum . 
Crust granular, conglomerated, lemon-yellow; apothecia 
nearly topshape ; centre convex, umber-brown ; border 
yellow, powdery ; underneath naked, black, shining ; podi- 
cils threadlike, brassy, powdery. 
Lichen chrysocephalus, Turner in Lin. Tr. 7, 88 ; Engl. Bot. 2501. 
Calicium chlorellum elatiimm, Acluir. Meth. 95. 
Calicium chrysocephalum a and /3, Achar. Meth. Suppl. 15; Lich. 239. 
On old wood, walls, and the bark of trees. 
7. Phacotrum trabinellum. Board phacotrum. 
Crust thin, greyish-white; apothecia at last lentilshape, 
centre black-brown, with a grey hoar ; border yellow- 
green. 
Calicium trabinellum, Achar. Meth. Suppl. 15. 
Lichen trabinellus, Engl. Bot. 1540, 
Calicium cluviculare yS and y, Achar. Lich. 255. 
Calicium xylonellum trabinellum, Achar. Meth. 95. 
Calicium chlorellum trabinellum, Wahl. Lapp. 487. 
On boarded buildings. 
8. Phacotrum cantherellum. Beam phacotrum. 
Crust thin, whitish, rather powdery; apothecia lentil- 
shape ; centre flesh-colour afterwards reddish, with a white 
hoar; podicils threadlike, naked, pale, growing brownish 
and black. 
Lichen cantherellus, Achar. Prod. 85. 
Calicium pallidum, Persoon in Ust. Ann. 7 ,20. 
Calicium cantherellum, Achar. Meth. 96 ; Engl. Bot. 2557. 
Calicium peronellum, Achar. Meth. 96. 
Calicium cantharellum a and /3, Achar. Lich . 240. 
On rotten wood and the bark of old trees. 
9. Phacotrum ferrugineum . Bust-colour phacotrum. 
Crust thin, granular, tartarlike, rusty- white; apothecia 
thick, black, often conglomerate ; centre pale rust-colour ; 
podicils short. 
Calicium. ferrugineum, Engl. Bot. 247 3. 
On pales. 
10. Phacotrum ceruginosum. Verdigris phacotrum . 
Crust thin, tartarlike, rather granulated, verdigris-grey ; 
apothecia black, hemispherical, centre very convex, brown- 
ish-black ; podicils slender black. 
Calicium aBiugirosum, Engl. Bot, 2502. 
On old boards. 
