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502 131 . Endocarp. 5. IDIOTHALAMEiE. PL cell. aph.
Lichen fluviatilis, TVeber Gotling. 265.
Lichen aquaticus, Weiss Crypt. 11 ; Engl. Bat. 594.
PJatisma aquaticum, Hojfm. Lich. 2, 64.
Endocarpon fluviatile, Wahlenb. Lapp. 462,
Endocarpon Weberi, Achar. Meth. 128 ; Lich. 304.
On rocks and stones under water.
Thallus while wet a fine green ; when dry blackish-brown
or dark green ; underneath sometimes deep black.
E. Opegraphide^. Thallus crustlike, flat, expanded,
adnate, uniform ; apothecia sessile, flat, bordered, linear.
XI. 132. GR APHIS. Adanson. Trait-moss.
Thallus crustlike, flat, expanded, adnate, uniform ; apothecia
composed of a long thalamium immersed in the
thallus; perithecium single, cartilaginous, halved, lateral,
black, enclosing a linear nucleus on both sides ; centre
naked above and below ; inside cellular-streaked.
1. Graphls scripta. Written trait-moss.
Crust membranaceous, smooth, rather shining, whitish
and rather greyish, nearly regular ; apothecia slightly raised,
naked, wavy, simple or branched ; centre slitlike; thalloid
border raised, membranaceous.
Lichenoides crusta tenuissiraa, peregrinis velut Uteris inscripta, Lillen
in Rail Syn. 71,48.
Lichen scriptus, Lin. S. P. 1606.
Opegrapha scripta, Achar. Meth. SOj Engl. Bot, 1813.
Graphis scripta, Achar. Lich. 265.
On the smooth bark of trees in woods.
Apothecia resemble Hebrew or Chinese characters.
2. Graphis puluerulenta. Powdery trait-moss.
Crust spreading, membranaceous, whitish ; apothecia
slightly raised, wavy; centre grooved, gaping, grey-hoary;
thalloid border raised, slightly swollen.
Opegrapha pulverulenta, Persoon in Uster Ann. 1, 29 ; Engl. Bot. 1754.
Graphis pulverulenta, Achar. Lich. 266.
On the bark of trees.
3. Graphis cerasi. Cherry-tree trait-moss.
Crust very thin, grey, greenish, shining; apothecia
slightly raised, straight, long, simple, pointed, nearly pa-
rallel; centre grooved, slightly hoary; thalloid border thin.
Opegrapha cerasi, Persoon in Uster Ann. 11, 20; Engl. Bot. 2301;
Achar. Meth. 27.
Graphis cerasi, Achar. Lich. 268.
On the bark of cherry and sloe trees.