OF GREAT BRITAIN. 395 



clustered, flexuose ; epithecium very narrow, rimceform ; margin 

 tumid, uiflexed ; hypotheoium black ; spores 8, oolourless, oblong, 

 1 -septate. 



On slaty maritime rocks, very rare. 1856. 



Bot. Prov : — 7. 



Wales : —Barmouth ! (1856.) Cwm Cywion ! 



Spores .021— .023 mm. long, .009 mm. broad. 



V. OPEGRAPHA, Ach. Nyl. 



Thallus very thin or scarcely any. Apothecia (lirellse) black, 

 superficial, lineari-lanceolate or sub-rotundate or linear, elongate or 

 flexuose or ramoso-divided, with a proper margin ; perithecium 

 entire ; epithecium plane or rimaBformi-angustate ; spores 8, colour- 

 less or fuscescent, lineari-oblong, sub-clavato-fusiform, fusiform or 

 acicular, 1-multi-septate. 



* Spores 1-septate. 



1. 0. lentiginosa, Lyell. cream-coloured, thin, tartareous, smooth, 

 nigro-fusco-limitate ; lirellce excessively prominent and sessile, very 

 minute, punctiform, oblong or linear, straight, simple ; perithecium 

 entire ; epithecium rimseform ; proper margin tumid and incurved ; 

 spores 8, fuscescent, irregularly obovate, 1-septate, constricted. 



On beech and holly and oak, rare. 



Stn:— Leight. Br, Graph. 26. (1854.) Nyl. Prod. 158. Mudd Man. 226. 



Fig :-Leight. Br. Graph, t. 6. f. 16. 



Exs :— Crombie 98. 



Geog, Distbib : — France, Normandy. 



Bot. Prov:— 1,2... 19. 



England : — New Forest ! Hants. Mr. lyell in herb. Borrer. St. Leonard's 

 Forest ! Sussex. Mr, Borrer. near Lyndhurst, New Forest. JJe». J. M. Crombie. 

 T ilgate Forest, Sussex. Mr. Larbalestwr. Ivybridge. Mr. Holmes. 



Ireland : — Curraghmore. Adm. Jones. Old Deer Park, Castlemartyr, Cork ; 

 Glenbbwer, Killeagh. Mr. Can-oil. 



"Spores .0025 to .003 in. long, by .001 to .00125 in. broad, t. 4. f. 89." 

 (Mudd.) "Spores .011—16 mm. long, .006—7 mm. broad." (Nyl.) Spores 

 .015— .016 mm. long, .006—7 mm. broad. 



2. 0. lentiginosula, Nyl. thallus evanescent ; lirello? excessively 

 prominent and sessile, very minute, ellipsoid, straight, simple, rarely 

 divided ; perithecium colourless or deficient at the base ; epithecium 

 rimseform ; proper margin tumid and incurved ; spores 8, fuscous, 

 obovate, 1-septate, constricted, larger than in lentiginosa ; paraphyses 

 indistinct. 



On pines in sub-alpine regions, rare. 1864. 



' Stn :— Nyl. in Flora 1865. p. 355. 

 Geog. Distrib : — Europe. 

 Bot. Prov :— 15. 



Scotland :— Glenfalloch ! Mr. Carroll. (1864.) 

 "Spores .020—23 mm. long, .010—11 mm. broad." (Nyl.) 



3. 0. diplasiospora, Nyl. albido-glaucescent, thin, smooth, mem- 

 branaceous, effuse ; lirellce oblong or. lanceolato-oblong, small, 

 innato-erumpent, black ; epithecium expanded, plane ; proper 

 margin thin, elevated, inflexed ; perithecium nigro-fuscous, entire 

 at the base ; paraphyses none ; spores 8, fusco-nigrescent, obovate, 

 1-septate, constricted, double the size of those of 0. lentigi?wsa. 



