Download PDF

504. ISS.Alyxoria. 5. IDIOTHALAME^. PLcell.aph.
XII. 133. ALYXORIA. Acharius. Wide-moss.
Thallus crustlike, flat, expanded, adnate, uniform ; apo-
ihecia oblong or long, sessile ; covered with a black, cartilaginous
membrane, enclosing a similar, rather solid parenchyme;
centre linear, bordered on both sides, hollow,
grooved or flat, open ; borders distant.
1. Jllyxoria notha. Spurious wide-moss.
Crust cartilaginous, rather leprous, whitish ; apolhecia
sessile, scattered, rather roundish or oval, irregular; ce?itre
flat, grows convex, hemispherical, slightly tuberculated,
edge very small.
Arthronia gibberulosa, Achar. Lick. 142.
Opegrapha verrucaroides /S and S, Achar. Lick. 244.
Opegrapha Lichenoides, Persoon in Uster Ann. 7, 30.
Opegrapha notha, Achar. Meth. 17 ; Lick. 252; Engl. Bol. 1S90.
On the bark of old elms, fig, and other trees.
2. Alyxoria diaphora. Variable wide-moss.
. Cr7ist cartilaginous, membranaceous, dirty greyish-white;
apotliecia sessile, variable, oblong, rather long, narrow both
ways, opake; centre flat; edges persistent, rather bent.
Opegrapha varia, Persoon in Uster Ann. 7, 30.
Opegrapha diaphora, ^cAar. itfe^A. 19; Lick. 254.
Opegrapha diaphora spanista, Achar. Meth. 19; Lick. 254.
On the trunks of trees.
XIII. 134. HYSTERINA. Acharius. Slit-moss.
Thallus crustlike, flat, expanded, adnate, uniform ; opo-
thecia oblong or long, sessile, covered with a black cartilaginous
membrane, enclosing a similar rather solid parenchyme;
centre linear, very narrow, slitlike, enclosed on
each side with a swollen, connivent border nearly close.
1. Hysterina nimbosa. Cloudlike slit-moss.
Crust slightly cracked, uneven, very white; apothecia
crowded, small, oval oblong, turgid; centre closed.
Opegrapha notha conferta, Achar. Meth, 18.
Opegrapha nimbosa, Achar. Meth. 18 ; Lich. 245 ; Engl, Bat. 2316.
On the bark of trees.
2. Hysterina Persoonii. Persoon's slit-moss.
Crust tartarlike, smoothish, coherent, uneven, whitish ;
apothecia innate, oblong; centre slitlike, growing wrinkled,
bent, plaited, irregular, slightly running into one another
irregulai'ly slightly gaping.