NEPHROMIUM | PELTIGERACEE 101 
2. N. levigatum Nyl. in Mém. Soc. Sci. Nat. Cherb. v. 
p. 101 (1857).—Thallus suborhicular, smooth above, chestnut- or 
dull-brown, the lobes sinuate-crenate at the margins, beneath 
glabrous and slightly wrinkled, pale (medulla white, K —). 
Apothecia smaJl or moderate, reddish-brown, crenulate, unequal 
at the margin, depressed and granulate at the back ; spores 
20-24 » long, 6-7 » thick.—Cromb. Lich. Brit. p. 28 ; Leight. 
Lich. Fl. p. 104; ed. 3, p. 99. Lichenoides saxatile fuscum, peltis 
in aversa foliorum superficie locatis Dill. in Ray Syn. ed. 3, p. 77, 
n. 91 (1724). Lichenoides fuscum, peltis posticis ferrugineis Dill. 
Hist. Muse. p. 206, t. 28, fig. 105 a (1741). Lichen resupiaatus 
Huds. Fl. Angl. p. 453 (1762)? Light. Fl. Scot. ii. p. 843? 
With. Arr. ed. 3, iv. p. 71% Nephroma levigatum Ach. Syn. 
Lich. p. 242 (1814); Mudd Man. p. 81? 
Evidently a rare lichen everywhere ; there is no specimen in the 
British herbarium. The original habitat as given by Acharius is 
‘in mountainous places,’ and it is extremely doubtful to which 
species Dillenius and others quoted above refer, though Crombie has 
determined the specimens in the Dillenian herbarium collected in 
Sussex and Shropshire as N. levigatum. 
Hab. On the trunks of old trees and on mossy boulders in 
mountainous places. 
Var. subtomentellum Nyl. in Not. Sallsk. Faun. & Fl. Fenn. 
Forh. v. p. 116 (1866).—Thallus dark-brown, beneath wrinkled, 
obsoletely and slightly tomentose, brown (medulla white, K —). 
Apothecia moderate in size, dark-red, wrinkled at the back or 
thinly areolate-granular ; spores similar to the species.—Leight. 
faeh; FY. ed. 3, p. 99. 
Exsicc. Cromb. n. 149. 
Resembling the species in the wrinkled backs of the apothecia. 
The thallus is generally darker and there are vestiges of a tomentum 
on the under surface. According to Crombie the spermatia are 
2°5 p» long and 1 p thick, those of the species being 3°5-4 yu long. 
Hab. On the trunks of old trees in mountainous regions.—Distr. 
Local and scarce in N. Wales and among the 8. Grampians, Scotland. 
—B. M. Head of Loch Awe, Argyll ; Glen Lochay, Killin, Perthshire. 
Var. parile Nyl. Syn. Lich. i. p. 320 (1860).—Thallus lobes 
more or less crisp and bluish-grey sorediate at the margins, 
beneath naked, wrinkled, pale or sometimes dark-coloured. 
Apothecia rare; spores as in the species.—Cromb. Lich. Brit. 
p. 28; Leight. Lich. Fl. p. 105; ed. 3, p. 99. N. parile Nyl. in 
Flora lxviii. p. 47 (1885); Cromb. in Grevillea xv. p. 77 (1887) 
& Monogr. i. p. 284; Dill. l.c. t. 28, fig. 105 B, o. Lichen parilis 
Ach. Lich. Suec. Prodr. p. 164 (1798); Engl. Bot. t. 2360. 
Nephroma parile Ach. Lich. Univ. p. 522 (1810) pro parte ; 
S. F. Gray Nat. Arr. i. p. 427; Hook. in Sm. Engl. FI. v. 
p. 216. N. levigatum var. parile Mudd Man. p. 81 (1861). 
Ewsicc. Cromb. n, 41. 
