LECANORA. | ‘ LECANO-LECIDEEI. 483 
long, 0,002 mm. thick; paraphyses usually jointed; hymenial 
gelatine bluish with iodine.—Cromb. Grevillea, xix. p. 58.— 
Lecanora castanea (Ram.) form percenoides Nyl. Bull. Soc. Bot. t. x. 
(1863) p. 268. 
Looks in some respects as if intermediate between ZL. glaucocarpa and 
L. squamulosa, but is very different in the characters of the thallus and 
the apothecia. The single British specimen is scarcely typical. 
Hab. On calcareous rocks in an upland situation Distr. Found only 
in S.W. England.—B. M.: Near Yatton, Somersetshire. 
185. L. peliocypha Nyl. Not. Sillsk. pro F. et Fl. Fenn. Foérh. 
n. ser. v. (1866) p. 182.—Thallus areolato-diffract. or verrucoso- 
squamulose, thickish, somewhat shining, the squamules often 
crenate, slightly convex, cervine-brown, blackish beneath (K(CaCl) — ). 
Apothecia at first immersed, then plane or slightly convex, papillose 
in the centre, reddish-brown, naked, the thalline margin persistent, 
crenulate and flexuose; spores oblongo-cylindrical, 0,003-5 mm. 
long, 0,0010-15 mm. thick ; hymenial gelatine bluish, then wine-red 
with iodine.—Cromb. Grevillea, xix. p. 58.—Parmelia peliocypha 
Wahl. in Ach. Meth. Suppl. (1803) p. 41. 
A plant of an alpine type which might readily be confounded with the 
following, especially with its variety, from which the negative reactions 
of the tha)lus and the papillate apothecia keep it distinct. The single 
fragmentary British specimen gathered is well fertile. 
Hab. On an exposed granitoid boulder in an alpine situation.—Distr. 
Only very sparingly on one of the N. Grampians, Scotland.—B. M.: The 
Braeriach, Braemar, Aberdeenshire. 
186. L. fuscata Nyl. Flora, 1872, p. 364.—Thallus appressed, 
areolato-squamulose, pale-chestnut or cervine-brown, opaque, the 
squamules angular and sublobate, blackish beneath (K(CaCl)+ 
reddish). Apothecia at first punctiformi-impressed, minute, then 
concave, small, difformi-angulose and rimose, reddish- or dark-brown, 
the thalline margin thin, flexuose ; paraphyses not discrete ; spores 
oblongo-cylindrical, 0,003-4 mm. long, 0,001-0,0015 mm. thick ; 
hymenial gelatine (especially the thece) tawny wine-red with 
jodine.—Cromb. Grevillea, xix. p. 58; Lich. Brit. p. 56 pro minima 
parte ; Leight. Lich. Fl. p. 186 pro parte, ed. 3, p. 17 pro parte.— 
Lichen fuscatus Schrad. Spicil. Fl. Germ. (1794) p. 83. Acarospora 
cervina (Pers.) Mudd, Man. p. 158 pro maxima parte. Lecanora 
cervina Cromb. Lich. Brit. p.56 pro parte. Psoroma cervinum Gray, 
Nat. Arr. i. p. 444. Lechen squamulosus Eng. Bot. t. 2011 (male). 
Lecanora squamulosa Hook. Fl. Scot. ii. p. 350; Sm. Eng. Fl. v. 
p. 187 pro parte.—Brit. Ews.: Leight. n. 24; Mudd, n. 131. 
Differs from LZ. squamulosa, from which it has frequently not been 
rightly discriminated, in the form of the thalline squamules, their 
chemical reaction, and the colour of their under surface, as also in the 
character of the apothecia. As in all the allied plants the hypothallus is 
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