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PH A C ID IUM CORONATUM.
Coronet-shaped Phacidium.
C u b s a n d O r d e b CRYPTOGAMIA FUNGI, L im N a t . O r d . H Y P O X Y L A ,
De Cand. Grev.
G E N E R IC C H A R A C T E R .
Peridia sessilia, varia, cornea, primum clausa, dein a centro versus ambitum, in
lacinias plures, dehiscentia. Celluloe sporuliferoe,fixoe, erectæ, elongatoe, sporulis
ovalibus.
Peridia sessile, various, dosed, at length bursting from the centre towards
the circumference, in numerous segments. Sporuliferous cells fixed,
erect, elongated. Sporules oval.
S P E C I F IC C H A R A C T E R .
P h a c id iu m coronatum ; orbiculare, subhemisphærico-depressum, nigrum, peridio
in lacinias acutas plures dehiscente; disco pallideßavescenti.
Ph. orbicular, subhemispherical, depressed, black ; peridium dehiscent in
numerous acute segments ; disk pale yellowish.
P h a c id iu m c o r o n a t u m . Fries, Obs. Mycol. 1 . p . 1 67.—Diim. in Sturm’s Deutschl.
Fung. t. 63.— Kunze et Schm. Mykol. Hefte, p . 36., et Deutschl. Schwam, 4.
N o . 82.— Grev. Fl. Fdin. ined.
A s c o b o l u s coronatus, Schum. Soelland, v. 2. p. 437-
XvLOMA pezizoides, Pers. Syn. Fung. p. 105— Fjusd. Icon. Piet. Fung. Rar.
Fasc. 3. t. 18. f. 1 .—Alb. et Schm. Conspect. Fung. p. 66.— Gray’s Nat.
Arr. V. 1. p. 546.— De Cand. Fl. Franç. v. 6. p. I 60.
P e z iz a coraitialis, Batsch, Flench. Fung. Cont. 1. p. 2 1 7 . t. 27. f. 152 Sow.
Fung. t. 118.—Relh. Fl. Cantab, ed. 3. p. 559.
P e z iz a viridis. Bolt. Fung. t. I 09. f.-I. {not o f Withering).
P e z i z a Artocreas, Bebent. Ind. PL p. 45. Jide Kunze et Schm.
S c l e r o t i u m quercinum, FL Dan. t. 1380. Jide Fries.
H a d . On dead Oak and Beech leaves in woods ; spring and autumn. Banks
of Loch Lomond, in many places. Woods at Kinordy. Balmuto. Abercorn
Park.—In England, it has been only found, to the best of my knowledge,
by R e h l a n in Madingly wood, and by B o l t o n near Halifax.
This plant, while young, exactly resembles a small circular black xyloma,
and is at first b u t little raised above the surface o f the leaf. It is then
smooth and shining. By degrees it becomes slightly rugose, raised, in a
hemispherical manner, b u t somewhat depressed, and at length bursts in
the centre, and splits into a number of acute, subtriangular laciniæ, which
become elevated, and slightly bent back, so as to resemble a beautiful
coronet in miniature. This state is seen to most advantage in moist wea