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Plcell.aph. 4. CENOTHALAME^. 117. Arthon. 479
G. SpiLOMiDEiE. Thallus crustlike, flat, adnate; apoihecia
flattish, irregular, not bordered.
XXVII. 117. ARTHONIA. Acharius. Sprinkled-moss.
Thallus crustlike, flat, expanded, adnate, uniform ; apothec'ia
innate, sessile, roundish, not regular, not bordered,
deep black, covered with a rather cartilaginous membrane
parenchyme similar, solid.
1. Arlhonia Swariziana, Swarlz spr'inkled-moss.
Crust cartilaginous, membranaceous, whitish ; apothecia
sessile, rather broad, slightly tumid, roundish, turned
back, irregular, confluent, raised, dotlike, deep black.
Arlhonia Swartziana, Admr. in Sckrader's Journ. 1,3, 13 ; Engl. Bot.
2079,
On the bark of trees.
2. jlrthoma astro'idea. Starred sprmkled-moss.
Crust membranaceous, white, greenish-grey; apolkecia
pressed to the thallus, flat, angular, rather stariike, irregular,
deep black.
Lichen astroiles, Acliar. Prod. 24.
Opegrapha radiata, Persoon in Uster. Ann. 7, 29.
Opegrapiia astroiflea, Achar. Meth. 25; Engl. Bot. 1847.
Artlionia radiata astroidea, Achar. Lick. 144,
On the smooth bark of trees.
3. Arthonia olscura. Dark sprinkled-moss^
Crust membranaceous, rather olive-colour ; apothecia,
small, flat, slightly concave, rather membranaceous, oval,,
elliptic, and kidneyshape, slightly sunk, wrinkled, deep
black.
Lichen obscuru?, Acliar. Prod. 20; Engl. Bot. 1752.
Opegr.ipha obscnra, Achar. Meth. 22.
Opegrapha reniformis, Achar. Meth. '23.
Arthonia obscura a and /3, Achar. Lich. 146.
On the bark of trees,
4. Arthonia lyncea. Lynx sprinkled-jnoss.
Crust thin, rather tartarlike, even, rather cracked, white
apothecia crowded, flat, slighdy sunk, roundish oblong and
bent, black with a grey hoar.
Lichen lynceus, Engl. Bot. S09.
Lecidea lyncea, Achar. Meth. 52,
Arthdnia lyncea, Achar. Lich. 147.
On the bark of old trees.