margin inflexed; asci clavate, 8-spored; spores linear-oblong,
often slightly constricted in the middle, dark-brown or nearly
blackish, 0,015-23 mm. long, 0,008-12 mm. th ic k ; hymenml
gelatine bluish with iodine.—Ope(/rap/irt cerebrina DO. IT. Fr. n.
p 312 (1805); Borr. Fngl. Bot. Suppl. t. 2632, f. 1 ; Hook, in
Sm. Fngl. Fl. v. p. 146 ; Leight. in Ann. Mag. Nat. Hist. ser. 2,
xiii. p. 88, t. 5, f. 2 (1854) ; Cromb. Lich. Brit. p. 100. Melano-
spora cerebrina Mudd Man. p. 226, t. 4, f. 88 (1861). '
graplia cerebrina Leight. Lich, FL p. 361 (1 8 /1 ); ed. 3, p. 394.
Hab. On calcareous rocks in hilly districts.—HisZr. With certainty
only in N. England and S.W. Ireland.—B. M. Penhill, Yorkshire
; Teesdale, Durham; Whitbarrow, Cumberland; Dunkerron,
Kerry.
89. MELASPILEA Nyl. in Act. Soc. Linn. Bord. sér. 3, i.
p. 416 (1856). Stictographa Mudd Man. p. 226 (1861), pro parte.
(PI 26 )
Thallus thin, sometimes developed below the bark (hypophloeodal)
or wanting. Algal cells Trentepohlia. Apothecia
black and carbonaceous, superficial or immersed, roundish or
elongate, simple or shortly branched, with a proper margin
only • disc narrow or flattened ; hypothecium colourless or dark-
coloured ; paraphyses slender, free ; asci elongate or narrowly
clavate, 8-spored ; spores ellipsoid, fusiform, or ovate, colourless,
becoming brown, usually 1-septate. Spermogones with simple
sterigmata and straight spermatia.
1 M lentiginosa A. Zahlbr. in Engler & P ra n tl Nat. Pflanzenf.
i. 1*, p. 96 (1903).—Thallus thin, smooth, cream-coloured,
limited by a brownish-black line. Apothecia very small, black,
sessile, oblong or linear, slender, straight, simple ; margins tumid,
incurved ; disc very narrow ; asci clavate ; spores irregularly
obovate, unequally 2-celled, pale brown, 0,015-16 mm. long,
0 006-7 mm. thick.—Opegrapha lentiginosa Lyell ex Leight. in
i n n . Mag. Nat. Hist. ser. 2, xiii. p. 211 t. 6 f. 16 (1854).
Carroll in Jonrn. Bot. iii. p. 291 (1865); Cromb. Lich. Brit,
p. 100; Leight. Lich. Fl. p. 372 ; ed. 3, p. 395. Stictographa
lentiginosa Mudd Man. p. 226, t. 4, f. 89 (1861).
The thallus forms somewhat extended patches on the bark ; the
apothecia are usually numerous and crowded and grow m all
directions.
Hab On trees.—Distr. Somewhat local, but plentiful where it
occurs in S. England and S. I r e la n d .-B . M. Launceston Cornwall ;
Lustleigh, Devon; near Brockenhurst and Lyndhurst, New Forest,
H an ts; St. Leonard’s Forest, Sussex; Curraghmore, Watertord ;
Glenbower Wood and Castle Martyr, near Cork.
2. M. lentiginosula A. L. Sm.—Thallus evanescent. Apothecia
small, black, prominent, elliptical, straight, rarely forked,
!urvpH scattered; disc narrow, slit-like; margins tumid, in-
23 mm m i l ? constricted, 0,020-
n 353 n Nyl. in Plora xlviii.
t '; t P- 24 (1866); Cromb.
Lich. B n t. p. 100; Leight. Lich. IT. p. 373 ; ed. 3, p. 395.
3. M. diplasiospora A. Zahlbr. I. c .-T h a llu s cream-coloured,
thin, smooth eflPuse. Apothecia small, black, oblong, somewhat
i n f l e lT margins thin, elevated,
0 097 39 dark-brown, 1-septate, constricted,
0 ,0 2 7 -p mm long, 0,012-16 mm. broad; hymenial gelatine
pale blue with iodine.—Opez/rop/ia diplasiospora Nyl. in Act
»“ loo'as™ I ' “? ! ' ■"
Similar in appearance to M. lentiginosa, but the aoothecia are
rather larger and the spores larger and I r k e r coloured
B B. M. Tore Mt. and Cromaglown, Killarney, KEearrrye. in S.W. Ire la n d .-
mu n Nyl. in Flora xlviii. p. 355 (1865) —
1 hallus efi^use thm, sordid-greenish. Apothecia black or brownish
mmute, adnate, roundish, plane, obsoletely margined, ochraceous!
yellow w ithm ; spores ovoid, 1-septate, brownish-black, 0,017-
t L T ' O m - 0 010 th ick ; hymenial gelatine not
tinned with uMine.—Carroll in Journ. Bot. vi. p. 101 (1868)-
Cromb. Lich. B n t. p. 106 ; Leight. in Lich. Fl. p. 405 ; ed. 3,’
Allied apparently to M. arthonioides Nyl. (in Act. Soo Linn
AW r (*^®6)), a plant of France, Switzerland and
S h e a’l i l “ I but differs in the colours
seen a r l S l f e l l ®P°^’®^- ^he specimens
FEaarer iSn 'bs laundl wW. IIr eland.— M. Glenbower Wood dainstdr inctesa.-rB FZnsnZiqr-.
Lean, Cork; Mangerton,.Killarney, Kerry.
5. M. amota Nyl. m Flora 1. p. 178 (1867).—Thallus effuse
whitish or scarcely visible Apothecia black, innate, moderate
in I ' uneven; hypothecium
thin, daik-brown; paraphyses slender, very few; epithecium
brownish or yellowish-brown; spores 4 to 8 in the ascus ellip-
soid-ovoid, 1-septate constricted in the middle, colourless or
h lm e u i S T f ’ ioiig, 0,007-0,010 mm. th ick ;
io d b t I slightly and evanescently blue with
lodme.—Carroll m Journ. Bot. v. p. 259 (1867) ; Leight. in Ann.
Q 2