360 BRITISH DISCOMYCETES. 
Margin entire; sporidia vermiform se ee vermifera. 
Margin pale; sporidia clavate or fusiform, mediu 
size .. .. a2 a os a +. macrospora. 
1, Margin flexuous; sporidia minute, elliptic. .. flexella. 
’Y Margin thin, compressed; sporidia large, 3-septate compressa. 
Margin thin, compressed; sporidia large, simple... connivens. 
Margin serrated; sporidia smaller, simple.. .. rubro-tingens. 
Margin absent .. oe as ive ae ae 2 
Sporidia brown ae -. Bloxami. 
Sporidia hyaline; cups seated on a spot-like crust Lecideola, 
Sporidia hyaline; cups emerging through the bark swbéectum. 
Margin tumid; sporidia brown gm sere .. lignyota., 
Margin crenulate; sporidia hyaline, fusiform, large maura. 
Margin incurved; sporidia hyaline, slender, small litoralis. 
Margin entire; sporidia hyaline, elliptic, minute minutissima. 
3.4Margin entire; sporidia hyaline, oblong-fusiform, 
very large .. a i abe Ne .. Loncierz. 
Margin obtuse; sporidia hyaline, clavate, large .. clavispora. 
Margin vinous-purple; sporidia hyaline, fusiform atro-vinosa. 
Margin absent... m3 an oe Ss . 4 
On dead stems of Hypericum : sporidia 3-septate.. Hyperici. 
On dead oak: sporidia 4 to 5-septate oe ++ proxima. 
Np 
A. SPORIDIA ELLIPTIC. 
(a) Colowred, septate. 
1. Patellaria lignyota. Fries, 
Scattered or subgregarious, sessile, when dry horny, 
when moist softer, applanate, concave, then plane, grow- 
ing black ; margin tumid, subcrenulate; hymenium when 
moist fuliginous; asci clavate, obtuse; sporidia 8, oblong- 
ovoid, brown, l-septate, 10 x 4u; paraphyses filiform, 
adherent. 
Patellaria lignyota—Fries, “Sys. Myco.,” ii. p. 150; 
B. and Br., “ Ann. Nat. Hist.,” No. 579; Cooke, “ Handbk.,” 
No. 2177. Arthonia melaspermella—Nyl. in “Flora,” 
1855; Leighton, “ Lichen Flora,” ed. iii. p. 416. 
Exs.—Rabh., “ Myco. Eur.,” 1152; Phil., “Elv. Brit,” 
No. 146. 
On decorticated wood. 
Cups about 4 ofa line broad. No visible thallus, and 
much resembling a Lecidea. Opinion will differ as to 
the alliance of this species, but for the present I prefer 
to retain it as a fungus. 
