The English flora - SeaweedAfrica

LTCHENES. 131
Synopsis of the Genera.
I. Thallus adherent, crustaeeous, amorphous.
A. Apothecia wore or less stipitate.
a. Apothecia rounded, fleshy, with the stipes solid (mycince).
PSELDO-FUNGI.
Fam. L B.eomyce^e.
1. B/EOMyces. Thallus crustaeeous, spreading, adnate. Apothecia
(mycince) orbicular, convex, capituliform, not bordered,
sessile upon a solid stipes.
b. Apothecia hollow, goblet-shaped (pilidia).
Fam. II. Calicioide;e.
2. Calicium. Thallus crustaeeous, spreading, adnate, uniform.
Apothecia (pilidia) goblet-shaped, more or less stipitate, filled
with a compact pulverulent mass which constitutes the disk and
is plane or subglobose.
B. Apothecia sessile.
a. Apothecia linear ( firellce). Pseudo-Hypoxyla.
Fam. III. Graphide.e.
3. Arthonia. Thallus crustaeeous, spreading, adnate, uni-
form, cartilagineo-mcinbranacoous. Apothecia innately sessile,
roundish, hut varying in form, sometimes elongated, nearly
plane. nol bordered, black, covered by a subcartilaginous membrane,
within subgelatmous, uniform.
4. Oim (.i:\imia. Thallus crustaeeous, membranaceous or
leprose, spreading, adnate, aniform. Apothecia (Urellce) elongated,
simple or branched, sessile or immersed, the dish narrow
with a proper bordu r and Sometimes with an additional one do-
rived from the thallus.
I». . ipothecia hemispherical ( tuben via ). nclosing a nucit us,
Fam. I V. Verri i
irie
b.
.). \'i;itm < \ni\. ThaUus crustaeeous or cartilagtneo-membranaceous,
spreading, adnate, unitorni. Apothecia (tubercula)
hemisphssrica] or subglobose, innate and immersed or sessile,
corneous, of a different colour and substance from the ikaUus,
(mostly a black erusl or shell) enclosing a wucfctw, the apex
papillary, often at Length perforated, sometimes ooTered by the
wart-like processes of the thallus*