var. fusiformis). Sagedia Harrimanni Koerb. Syst. Lich. Germ,
p . 362 (1855).
Exsicc. Mudd n. 288 (as A. macularis)] Leight. n. 138 (as
F. codonoidea); Larb. Lich. Hb. n. 197 (as F. Harrimanni),
without number.
The type specimen of F. perminuta in the British Museum
has 4-oelled spores, and is otherwise similar to P . chlorotica.
Several species or varieties have been founded on slight differences
of perithecia and of the thallus, which varies from greyish-green
to dark-brown in colour. The spsoimen of Verrucaria trachona
from Acharius in the possession of the Linnean Society is a
spermogonial form, possibly of P. chlorotica. In the Sowerby
herbarium there is a specimen of P. chlorotica from Miss Hutchins,
the original collector of F. trachona in Ireland, but the specimen has
been labelled by Borrer as Verrucaria viridula, and does not altogether
correspond with the one figured in Engl. Bot.
Hab. On rocks.—Distr. Not uncommon in the Channel Islands,
England, AVales, and Ireland; not recorded from Scotland.—P. Af.
.lerbourg, Guernsey ; Boulay Bay, La Coupe, Eozel and Trinity, Jersey ;
AVithiel, Cornwall; Torquay, Devon ; Bathford Hill and AVeston-super-
Mare, Somerset; Barnsley Park, Gloucestershire; Haughmond Hill,
Shropshire ; Bettws-y-Coed and Trefriw, Carnarvon ; Buxton, Derbyshire
; Bilsdale, near Ayton, Cleveland, Yorkshire; Blaokwater and
Derriquin, Killarney, Kerry; Kylemore, near Tully, Doughruagh and
Glen Tuagh, Connemara, Galway; Cliffs of Moher, Clare.
A"ar. persicina A. L. Sm.—Thallus whitish or sometimes rose-
coloured or purplish-red. Spores more obtuse a t the ends th an
in the species.— Verrucam'a linearis Leight. Angioc. Lich. p. 52,
t. 23, fig. 1 (1851) & Lich. Fl. p. 441; ed. 3, p. 475; Cromb.
Lich. Brit. p. 116. F. chlorotica i. persicina Nyl. in Maine et
Loire M.em. Soc. Acad. iv. p. 36 (1858). Sagedia persicina
Koerb. Syst. Lich. Germ. p. 364 (1855). Arthopyrenia linearis
Mudd Man. p. 300 (1861) e descript.
Leighton (Angioc. Lioh. p. 52) refers to this variety as the small
lichen figured along with V. Dufourii in Engl. Bot. Suppl. t. 2791.
Hab. On calcareous rooks.—Distr. Eare in N. and S.AV. England
and AAb Ireland.—P. M. AVoodale, Buxton, Derbyshire ; in a cave,
Derryclare, near Kylemore, Connemara, Galway.
8. P. tenuifera A. L. Sm.—Thallus dark-grey or blackish,
thin, continuous or cracked. Perithecia minute, black, hemispherical
with a minute ostiole; peritheciai wall dimidiate;
paraphyses slender, d is tin c t; spores colourless, elongate-acicular,
3-septate, 0,029-35 mm. long, 0,003-4 mm. thick.— Verrucaria
tenuifera Nyl. in Plora lix. p. 237 (1876) ; Cromb. in Grevillea v.
p. 29 ; Leight. Lich. Fl. ed. 3, p. 476. F. pertenuis Leight. in
Trans. Linn. Soc. ser. 2, i. p. 239, t. 32, fig. 20 (1878) & Lich. Fl.
ed. 3, p. 476.
There is no specimen of F. tenuifera in the British Museum,
but Larbalestier states that the specimen of F. pertenuis, collected
at Goodwich Bay, is identical with his original specimen of
F. tenuifera collected a t Jersey.
Hah. On rocks.—Distr. Eare in the Channel Islands and
S. AVales.—B. M. Goodwich Bay, Pembrokeshire.
9. P. epigæoides A. L. Sm.—Thallus pale-greenish, thin, re sembling
a greenish spot. Perithecia black, small, semi-immersed ;
peritheciai wall black over the upper half, brown below;
paraphyses slender, distinct ; spores 8 in the ascus, elongate,
fusiform, 3-septate, 0,018-27 mm. long, 0,005-8 mm. thick.—
Verrucaria epigæoides Nyl. in Plora 1. p. 329 (1867) ; Carroll in
Journ. Bot. v. p. 259 (1867) ; Cromb. Lich. Brit. p. 116 ; Leight.
Lich. Fl. p. 446 ; ed. 3, p. 477.
Hdb. On sandy soil.—Distr. Rare in S.AV. Ireland.—B. M. Moher,
Clare.
Perithecia darle-coloured : spores 3-7- {rarely more-) septate.
10. P. olivácea A. L. Sm.—Thallus effuse, thin, continuous
or becoming slightly cracked, smooth or somewhat wrinkled,
dull olive-brown. Perithecia hemispherical, small, numerous,
prominent, immersed a t the base, black ; peritheciai wall
dimidiate ; paraphyses stoutish, free ; asci cylindrical-clavate ;
spores elongate-clavate, 3-7-septate, colourless, 0,027-40 mm.
long, 0,004-5 mm. thick.— Verrucaria olivácea Pers. in lis t.
Ann. Bot. vii. p. 28 t. 3, fig. 6 (1794) ? Borr. in Sm. Engl. Bot.
Suppl. t. 2597, fig. 1 (1829); Hook, in Sm. Engl. Fl. v. p. 150;
Tayl. in Mackay PI. Hib. ii. p. 89 ; Leight. Angioc. Lich. p. 42,
t. 18, f. 1 & Lich. Fl. p. 452 ; ed. 3, p. 483 ; Cromb. Lich. Brit,
p. 117. Arthopyrenia olivácea Mudd Man. p. 301 (1861).
Exsicc. Bohl. n. 82 ; Leight. n. 199 ; Mudd n. 290.
Hab. On the bark of trees.—Risi)-. E ather rare throughout
England and AVales and S. and AV. Ireland, not recorded from the
Channel Islands nor from Scotland.—B. M. Duncton and Henfield,
Sussex ; Shiere, Surrey ; Silbertswold, Kent ; near Cirencester and
Stowell Park, Gloucestershire ; Malloch Tor, Derbyshire ; Gwydir
AVoods, Bettws-y-Coed, Carnarvonshire ; Easby AVood and Sowerdale,
Cleveland, Yorkshire ; Tullagreen and Ballyedmond, Cork ; Muokruss,
Killarney, Kerry ; Killaloe, Clare ; Loughcooter, Galway.
11. P. faginea Am. in Flora Ixviii. p. 166 (1885).—Thallus
whitish or cream-coloured, thin, effuse. Perithecia black, minute,
semi-immersed, hemispherical; peritheciai wall dimidiate; paraphyses
crowded, distinct ; spores broadly lanceolate-fusiform,
colourless, usually 5-7- (rarely more-) septate ; 0,030-37 mm.
long, 0,003-7 mm. thick.—Sagedia faginea (sub Segestria) Schær.
Enum. p. 208 (1850). S. lactea Koerb. Syst. Lich. Germ. p. 366
(1855). Verrucaria lactea Leight. Lich. PI. p. 452 ; ed. 3, p. 483.
Hah. On trees.—RfsZr. Eare in S. England (Sussex).
II. z