ACAROSPORA| LECANORACE: 337 
ot squamules somewhat scattered and rounded, varying in colour 
from yellowish- to reddish- or dark greenish-brown, dark beneath 
(K—CaCl—). Apothecia sinall, immersed and concave, then 
somewhat plane, solitary or several in each squamule ; the disc 
dark-brown ; paraphyses rather stout, variously septate, scarcely 
wider at the tips, the epithecium brown; spores minutely 
ellipsoid, about 3-4 » long, 1 » thick ; hymenial gelatine blue 
then reddish-brown with iodine.—A. cervina vars. rufescens 
smaragdula, privigna (non Ach.) Mudd Man. pp. 159, 160 (1861). 
Endocarpon smaragdulum Wahlenb. ex Ach. Meth. Lich. Suppl. 
p- 29 (1803); Hook. Fl. Scot. ii. p. 44 & in Sm. Engl. Fl. v. 
p- 158; 8S. F. Gray Nat. Arr. i. p. 499; Leight. Angioc. Lich. 
p- 16, ty, 4, fig. 3 (incl. var. rufovirescens t. 4, fig. 4 & var. 
rufescens). E. “rufovirescens Tayl. in Mackay FI. Hib. ii. p- 100 
(1836). Lichen smaragdulus Sm. Engl. Bot. t. 1512 (1805). 
Urceolaria rufescens Turn. ex Ach. Lich. Univ. 329 (1810) ; 
Hook. in Sm. Engl. Fl. v. p. 173; Borr. in Engl. aes Suppl. n. 
2657 (Lecidea rufescens in text). Lecanora rufescens Nyl. in 
Flora lv. p. 364 (1872) ; Cromb. Monogr. i. p. 484. L. smarag- 
dula Nyl. 1. c.; Cromb. tom. cit. p. 486. L. fuscata var. 
smaragdula Cromb. Lich. Brit. p. 56. L. squamulosa f. smarag- 
dula Leight. Lich. Fl. p. 184; ed. 3, p. 169. 
Exsicce. Leight. n. 271 ; Mudd n. 132. 
Resembles A. fuscata in the dark undersurface, but differs in the 
more even thallus and in the absence of thalline reaction. Some- 
times the apothecia become papillate. L. rufescens and L. smarag- 
dula differ only in the scattered squamules of the latter. 
Hab. On rocks and walls in maritime and upland districts.— 
Distr. Not common in maritime and hilly regions of the British 
Isles.—B. M. Island of Guernsey; Redruth, Cornwall; Wickwar, 
Gloucestershire; Beeleigh and Langford, Essex; Cader Idris, Dol- 
gelly, and near Barmouth, Merioneth ; Gorleston, Suffolk ; Howden 
Gill, Kildale Moor and near Ayton, Cleveland, Yorkshire; Teesdale, 
Durham; near Hexham, Northumberland; near Kendal, Westmore- 
land; Barcaldine and Appin, Argyll; King’s Park, Stirling; Ben 
Lawers, Perthshire; Bay of Nigg, Kincardineshire; Derriquin, Sybil 
Head and Dunkerron, Kerry ; Kylemore, Connemara, Galway ; Clare 
Island, Slieve More Mt., Achill island and Achill Sound, Mayo. 
Var. sinopica Massal. |. c.—Thallus squamulose-areolate or 
the small rounded squamules somewhat scattered, rusty-red. 
Apothecia minute, the disc dark-brown.—4A. cervina var. sinopica 
Mudd Man. p. 160 (1861). Endocarpon sinopicum Wahlenb. ex 
Ach. Meth. Lich. Suppl. p. 30 (1803); S. F. Gray Nat. Arr. i. 
p. 499; Hook. in Sm. Engl. Fl. v. p. 159. FE. smaragdulum var. 
sinopicum Leight. Angioc. Lich. p. 16, t. 5, fig. 1 (1851). Lichen 
sinopicus Sm. Engl. Bot. t. 1776 (upper fig.) (1807). Lecanora 
fuscata var. sinopica Cromb. Lich. Brit. p. 56 (1870). L. 
squamulosa £. sinopica Leight. Lich. Fl. p. 184 (1871); ed. 3, 
I. Zz 
