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PlceU.apk. 4. CENOTHALAME^. llO.Psoroma. 445
3. Psoroma trihacium. Torn psorome.
Crust scalelike, silvery, greyish white ; lobes irrep-ular,
differently shaped, torn crenate, tiledlike; underneath the
same colour, slightly fibrilled ; apothecia pressed close,
centre flat, pale circumference at length crenated and
lobed ; thalloid border raised, persistent.
Lenanora tribacia, Jchar, Licit. Univ. 415.
On the trunks of trees and rocks.
4. Psoroma candelariiim. Candle psoro77ie.
Crust scalelike, yellow ; lobes very crowded, torn-jao-o-ed,
tiledlike; edges granulated, powdery ; apothecia flattish,
similar in colour; thalloid border raised, not cut.
Lichenoides crustosiim oibiculis et scuteliis flavis, Dillen Muse. 236-'
Engl. Bot. \1M.
Lichen candelariiis, Lin. S. P. 1608.
Lichen concolor, Dickson Crypt. 3, 18.
Parmelia caiidelaria, Achar. Meth. 187.
Lecauora candelaria, Achar. Lich. 416.
On the trunks of trees, palings, rocks, and walls.
5. Psoroma polycarpum. Mamj-fndled psorome.
Crust composed of conglomerated, granulated, lemonyellow
lobes; apothecia crowded, bent; centre flat, dilated,
similarly coloured, afterwards pale -red ; thalloid border ^t
length crenulated.
Lichen polycarpiis, Ehrh. Crypt. 14, 136.
Verrucaria fulva, Hoffm. Germ. 193.
Parmelia citrina, Achar, Meth. Lich 179.
Lecanora candelaria, Achar. Lich. Univ. 416.
On old wood and the trunks of trees.
6. Psoroma hypnorum. Hypnum psorome.
Crust scalelike, brownish yellow, flame-colour ; lobes
small, roundish, dissimilar, edge granular, crenulate; apothecia
slightly membranaceous; centre concave, at length
flat, dilated, bay and black ; thalloid edge raised, bent in,
crenate.
Lychen hypnorum, Fl. Dan. 956 ; Engl, Bot. 740.
Psora hypnorum, Hoffm. Germ. 166.
Parmelia lepidora, Achar. Meth. 185.
Lecanora lepidora, Achar. Lich. 418.
On the ground, and on rotten moss.