A very distinct plant, whicli when less developed and sterile entirely
resembles isidioid states of a Pertusaria, in which genus it has been
placed by Th. M. Fries (Lich. Scand. p. 307) .and to which probably it
really belongs. The peculiar papillæ are corallinoid, fragile, more or less
brun'clied, at first short, then somewhat elongate, often bearing at the
apices dark brown verrucæ, which were mistaken for the fructification by
some older authors. In our Islands it is rarely well fertile. The spermogones,
however, are not unfrequent, with spermatia {fide Nyl.) 0,0035
mm. long, 0,0005 mm. thick.
Hah. On mosses upon the ground, rarely on schistose rocks in alpine
situations.—Histr. Local and scarce towards the summits of a few of the
higher mts. of the S. and N. Grampians, vScotlaiid.—B. AI. : Craig
Oalliach and Ben Lawers, Perthshire ; Cairngorm and Cairntoul,
Braemar, Aberdeenshire.
Form depressa Cromb. — Thallus epapillate, greyish-white.
Apothecia minute, adnate, numerous and crowded.
Perhaps only a stunted condition depending on situation, as a few very
short, simple papillæ are here and there visible.
Hab. On the hare ground in an alpine locality.—Distr. Very sparingly
on one of the N. Grampians, Scotland.— B. AI. : Summit of Ben-naboord,
Braemar, Aberdeenshire.
163. L. c in e re a Somm. Suppl. Fl. Lapp. (1826) p. 9 9 ; Nyl. Not.
Sallsk. pro F . et Fl. Fenn. Forh. n. ser. v. (1866) p. 136.—Thallus
determinate or subeffuse, rimoso-areolate or diffracto-areolate, grey
or greyish-white (K + yellow, th en ru sty-red, CaCl — , medulla
I —) ; hypothallus black. Apotheoia small or submoderate, immersed
and concave, a t len g th sessile and plane, black, naked ; tho
th alliu e margin entire, subpersistent ; spores 8me (rare ly 6næ),
subellipsoid, 0 ,0 1 5 -2 3 mm. loug, 0 ,0 0 8 -1 4 mm. thiok ; paraphyses
no t d iscrete; hymenial gelatine bluish, th en tawny or wine-red
w ith iodine. — Cromb. Lioh. Brit. p. 54 ; Leight. Lich. Fl.
p. 195, ed. 3, p. 172.— Aspicilia cinerea Mudd, Alan. p. 162 pro
p a rte . Urceolaria cinerea Sm. Eng. Fl. v. p. 172 ; Tayl. in Alaok.
F l. Hib. ii. p. 132 ; Gray, Nat. Arr. i. p. 458. Lichen cinereus
Ach. Prodr. (1798) p. 3 2 ; En g . Bot. t. 1751.—As observed by
Acharius I. c. th is is scarcely Lichen cinereus Linn. Alant. i. (1767)
p. 132, of whioh there is no specimen in his He rb arium ; nor is it
Lichen cinereus Huds. F l. Angl.+d. 2, p. 525.
A good species, though often ■ not well characterized nor rightly
limited. In this latter respect various others have been subsumed under
it which are now readily separated, apart from the other distinctive
characters, by their negative reactions with K. I t is thus a much less
variable plant than was supposed, and is not so apt to be confused with
some of its allies. The thallus,which is generally well fertile, occasionally
spreads extensively, but is usually limited hy the hypothallus. A state
very rarely occurs in Britain on schistose rocks (Tremadoe, N. W a l e s ,/*
Leighton) in which the thallus is greyish-ochreous, when it is form
ochracea Leight. Lich. Fl. ed. 3, p. 193 ( Urceolaria cinerea y. ochracea
Schaer. Spicil. p. 72). The spermogones are frequent, with spermatia
0,016-21 mm. long, scarcely 0,001 mm. thick.
e d ^ ^ ^ T / ^ - T r h a l f “ ' (1875) p. 1 1 6 ; Lich. FI.
ri F; pn?™ i “® groyish-brown, squamuloso-areolate, th e
convex, often rugose. Apothecia §quamu in n ate , sm a ll; th e
4-k 17- - — iunjust;.ii-potfiecia inn
thaiUme margin persistent.— Cromb. Grevillea, xix . ^
p. 57.
^h ich renders it a
are frequei!t iu the specimens ' apoAecia and spermogones
i s v T i n r j “n “ “ mountainous d is tric ts .-
Beauport Isfand nf I Channel Islands and N. Wales.—B. AI. •
tie j p o r t . Island of Jersey. Llyn Dinas, near Beddgelert, Carnarvon:
Subsp. L. e p i g l p t a Nyl. Flora, 1881, p. 4.—ThaUus rimoso-
areolate, dark-greyish, the areolæ plane. Apothecia a t len»th
prominent, somewhat convex, th e epithecium crowdedly c o r ru 4 te
ty p e ._ C r o m i GrevUIcÏ
of the epithecium, which
gives tne to u t as it were a gyrose appearance. This, however is not
visible m the young urceolate apothecia. The spermooones are frequent
with spermatia straight, 0,015-23 mm. long, 0,0005-0 mm th T c k ^ ’
in maritime and mountainous d istricts.-D Air.
J d y v e r y s p a i ^ ales and the S.W. Highlands of Scotland.
Ji. M .. Oadei Idiis, Alerionethshire. Barcaldine, Argyleshire.
164._ L. in te rm u ta n s Nyl. Flora, 1872, pp. 354, 429 —Thallus
determinate, diffraeto-areolate, u h itish or oæ ti^ g rey ish (K + y e llow
cave wTcld'h t 7 t n ~ î r submoderate, immersed, con-’
cave blackish ; th e th alh n e margin entire, a t length inflexed • spores
j u a l l y 8me 0 ,0 2 3 -3 4 mm. long, 0 ,0 0 9 -0 ,0 1 5 mm. th T c k -T y
G r e l i l a S ^ . s “ ’ iodine. - Cromb.
a i i ^ F r '^ ^ " '7 li® preceding species, but differs in the larger spores
J d the much shorter spermatia, which are 0,007-9 mm Ion» scarcely
S . ¿® i^ /.f y i“ der says that the tliallus in the k l?yrenee^^^^^
llauudimi SenStavij tl alli ot oo?tIh er speci■ es. In the sinrfe fBror-i"ti sfhil ef frian»tirTuisPinotna, -„olf
specimen seen it is associated with Lecanora at, a. Gregmentaiy)
p h . On schistose rocks in a maritime district.—DfsZr. Extremelv local
aud^scaroe in W. Irelaiid._B. AI. : Near Kylemore; 7™ u e m i ! eoî
2 h 2