282 



LICHENACEI. 



[SOLORINA. 



S. Grampians, Scotland (where it is plentiful) ; rare in N.E. Ireland. — 

 B. M. : Buxton Dale, Derbyshire ; "Whernside and Guisboro' Moor, Cleve- 

 land, Yorkshire ; Teesdale, Durham ; near Kendal, AYestmoreland. Fin- 

 larif, Killin, near Tummel Bridge and Crai^ TuUoch, Perthshire. Glen- 

 ariti, co. Antrim. 



4. S. bispora Xyl. Syn. i. (1860) p. 3:n, t. 8. f. 42.— Thallus 

 orbicular, somewhat small, subcoriaceous, subsmooth, lobato-divided, 

 pale-greyish or brownish-green, -white-pruinose ; beneath white, 

 spongioso-tomtntose, with long scattered rhiziuae ; lobes rounded or 

 incised and somewhat creuate at the margins. Apothecia urceolato- 

 depressed, small or moderate, brown or dark-brown, immarginate ; 

 spores 2nae, reddisb brown, ellipsoid, 0,065-88 mm. long, 0,033- 

 42 mm. thick. — Stirt. Grevillea, ii. p. 60 ; Cromb. Journ. Bot. 1874, 

 p. 147 ; Leigbt, Lich. Fl. ed. 3, p. 107. 



This differs from S. saccata in the white-pruinose thallus, the two-spored 

 thecfe, and the much larger spores. The thallus is also rather smaller, 

 often somewhat rugulose, and thicker; and the apothecia are usually 

 smaller. A variety limhata, described in Nyl. Syn. /. c, which is 

 analogous to *S'. spongiosa, has not been detected in Great Britain. 



Hah. On the trround in alpine districts. — Distr. Local and rare on the 

 S. Grampians, Scotland. — B. M. : Ben Lawers, Perthshire. 



Subtribe II. PELTIGERINEI Xyl. Flora, 1882, p. 457 ; 

 1884, p. 219. 



Thallus destitute of cepbalodia ; gonidial layer consisting of 

 gonimia. Apothecia and spores variable as in the tribe. 



This also contains three 

 genera — Nf'phromhan^ Felti- 

 yera, and Solorinina — parallel 

 to those of the preceding 

 subtribe, except that the thal- 

 lus is gonimiose and without 

 cephalodia. Solorinina is 

 exotic. 



51. NEPHROMIUM Xyl. 

 Mem. Soc. Cherb. v. (1857) 

 p.lOl(nota); Syn. i. (1860) 

 p. 318. — Thallus fragile, 

 naked or viUose beneath, 

 the cortical layer there 

 continuous and nerveless ; 

 gonidial layer with the 

 gonimia usually moniliform. 

 Apothecia reniform, adnate 

 to the lower surface of the Kephromium lavigatum Njl.— a. Section of 

 maro-in of the thallus, with thallus, x 200. h. Two sj-ngonimia, 

 thalline margin ; thee* cla- >< ^f- '■ T'l^^, ^"'^ paraplY.sis, x \m 

 " Q /i\ Q "'• -spores, X .uK). e. Vertical heetion of 



vate; spores Suae, (l)-3- two spermogones, x 30. /. Sterigmata 

 aeptate, fusiformi-oblong, and spermatia, xr)00. 



Fig. IX). 



