ïh e Terriicæ, occasionallv verj’ tumid, vary considerably according to tbe
number of the ostioles. These are usually 1, but sometimes 3, 4, 5, or
even more, appearing like minute, blackish subpapillate dots.
Hah. On rocks in maritime and mountainous districts.—Histr. Rather
local iu S.AV. England, N. AA’ale.s, the S.AA’. Highlands, and the S.
Grampians, Scotlaud, as also in S. Ireland.—11. M. : Pentire, Lamorna,
near Penzauce, Cornwall ; Barmouth aud near Dolgelly, Merionethsbire.
Appin, Argyleshire; Craig Calliach, Perthshire. Lambay Island, near
Cork.
Form 1. microstictica Cromb.—Thallus sprinkled w ith short,
simple, concolorous papillæ, brownish a t tbe apices.— Lichen
microgticticus Sm. Eng. Bot. xxxii. (1811) t. 2243. Isid ium
mierostictieum Turn. & Borr. Lich. Br. p. 9 4 ; Hook. Fi. Scot. ii.
p. 66 ; Gray, Nat. Arr. i. p. 774 ; Sm. Eng. El. v. p. 2 31.—B rit.
Exs. ; Leight. u. 342.
A sterile condition analogous to form Westringii of P. concreta. The
papillæ, as noticed by Turner and Borrer, I. c., are miuute, scattered,
rarelv confluent, brittle, and when abraded leave a minute white impression
in tbe crust.
Hah. On rocks in maritime and mountainous districts.—Histr. Sparingly
in the Chanuel Islands, N. AA’ales, and S.AV. Irelaud.
Eorm 2. variolosa Cromh. Grevillea, xix. p. 59.—Thalline
verruoæ sterile, transformed into white, pulverulent soredia.—
A’ar. ft. variolosa Mudd, Man. (1861) p. 271.—B rit. E x s .: Leight.
n. 341.
Though looking as if distinct, it is only one of those variolarioid conditions
so common iu the plants of this genus.
Hah. On rooks in maritime districts.—Histr. Very local in N. AA’ales
and the S.AV. Highlands of Scotland.—B. M. : Barmouth and Dolgelly,
Merionethshire. Barcaldine, Argylesliire.
16. P. coccodes Nyl. Mém. Soo. Cherb. t. v. (1857) p. 146.—
’Thallus determinate or effuse, unequal, suhleprose, rimulose or
rimose, a t times verruculose, whitish, often limited by a dark line
a t the circumferenoe (K-(-yellow, th en deep ru sty red, CaCl — ).
Apothecia usually several in scattered subglobose or nodulose
verruoæ ; th e ostioles punotiform, black, slightly prominent ; spores
0,1 1 5 -1 4 0 mm. long, 0 ,0 4 0 -6 0 mm. thick.—Cromb. Lich. Brit,
p. 59. Pertusaria glohulifera yar. d. coccodes Mudd, Man. p. 274.
Isid ium coccodes Turn. & Borr. Lieh. Br. p. 89 ; Sm. Eng. F l. V.
p. 2 3 0 ; Gray, Nat. Arr. i. p. 412. Lichen coccodes Ach. Pro d r
(1798) p. 1 0 ; Eug. Bot. t. 1511.
A distinct species, though by some authors mixed up with the
preceding, from which, apart from the habitat, it is sufficiently separated
by the characters given. The sterile thallus, which, when more leprose,
is apt to be mistaken for Lecanora porella, var. Turneri, is often somewhat
isidioid with the isidia cylindrical, short and simplish. AVhen
fertile, as it rarely is in the British specimens, the verrucæ are at times
as if glomerulose.
Hah. On trunks J old trees in upland districts.—Dfsfr. Onlv here and
NelflV ¿ not seen iu Scotland or Ireland—B .M •
L s e x ATbm!;np“ s ’ Epping and Hainault Forests,
rihhe D f T W t , H an ts; Salporton, Gloucester!
H u e , Hay Park, Herefordshire ; Baysdale, Cleveland, Yorkshire.
. l o Z ^ 7 '- f ’ Soo. Bot. t. XXV. (1878)
L L ~ ¿ ® numerous, long, isidioid papillæ
which are obtuse and branched.—Cromb. Grevillea, xix. p. 59
is a Z y s J te r il^ ''” ' “ * well-marked condition of the type. I t
LLah- On the trunk of an old tree in a wooded upland situation —
I / ” '“ ' “ .
1876 2H4‘ " T w f ' ' 7 1 ”' » ( “ W) P- 117; I'lor., i»7b, p. 234 —Thallus determinate, continuous, thickish, rimose,
unequal, wh ite or whitish, subeffigurate a t the circumference
(K yellow, then saffron-red). Apotheoia immersed in convex,
variously confluent, th allin e verruoæ, endooarpoid, colourless,’
indicated externally by a dark punotiform ostiole ; spores 0 0 1 5 -
25 mm. long, 0 ,0 5 2 -0 8 0 mm. th io k .-C rom b . GreviUea, v. p. 2 5 ;
Leight. Lich. F l. ed. 3, p. 227.
A rather interesting- plant, forming, as ob.served by Nylander (Flora,
wVci condition of “ Isidmm Westringii," the relation of
wh J to the allied species had previously been very uncertain. On the
Í r ® r r ® ’ -^Ticli are well fertile, traces occur here
and there of a few snort abortive papillæ.
Jlab. On schiste J rocks in a maritime district.-Dish-. Extremelv
• Letterfrack, Connemara, ccj.
Form Westringii Nyl. Elora, 1876, p. 2 3 4 .-T h a llu s more or
I j s d js e ly p ji llo s e ; papillæ a t first minute, subglobose, then
elongate subcyhndncal, simple and branched, brown a t the apices
Leight. Lioh. El.
P; f3 6 , ed 3, J 227 pro minima pa rte . Lichen Westringii Aoh.
Vet. Ak Handl. 1 /9 4 , p. 179, t. 6. f. 1 ; Eng. Bot. t. 2204 ; Dicks.
0?, N®®' I^ td ium Westringii Turn. & Borr. Lioh. Br
E n g h i 2 : ft- P- 06 ; Sm.
d istin cZ t l" '® ' - i f “'0 condition, though at first sight appearing very
Í L 1 L p a p i l j are sometimes 2-S confluent, and in age the apica'l
globules become dark-or reddish-brown. ^ m apicai
T v Z ' - a ^ rocks and walls in maritime and mountainous districts —
D t o Z Z l AV T ®?’® ? Britain; rare in the Chaunel
Llands and AV. Irriand ; probably often overlooked.—B. M. ; Island of
Gimrnsey. Near St. Aiirt.ell and Penzance, Cornwall ; Barmouth and
Aberdovey, Merionethshire; Aikendale, Durham; Thm-nthwaite, near