ADDITION'S TO THE BRITISH LICHEN-FLORA. 179 



L. nm/:Jio(ern, Leiglit. in litt. sp. n. On gneissic stones of walls in 

 liilly tracts. Rare and local at Hill of Ardo, near Aberdeen (Crombie, 

 August, 1870). The tlialUis is like that of PUopJioroi) fhida, and the 

 apothecia are partly innate, prominent and clustered. The spores are not 

 unlike those of i. Inpickhi, but the character of the thallus and the brown 

 hypothecimu keep them distinct. 



* L. siib-Kochicnia, Nyl. in Flora, 1869, p. 8.5. On schistose rocks in 

 snbalpine and maritime regions. Perhaps not unfrerpient, as on Cader 

 Idris (Leighton, 1864), and on the coast of Kincardineshire (('rombie, 

 1865), thongh not distinguislied till Nylander's description, as above. 



L. ni[/ro-g1oinerata, Leight. in litt. sp. n. On quartzose stones in bare 

 alpine places. Very rare on summit of Ben-y-gloe, Blair .\thole (Crombie, 

 August, 1870). Externally it has a general resemblance to L. rJidncens, 

 but is sufficiently distingnished by the squamnlose dispersed thallus, the 

 colourless hypothecinm, and the apothecia internally colourless. 



L. triphagmia, Nyl. Prod. 141. On shady rocks in snbalpine tracts. 

 Rare and local, having as yet been detected only very sparingly on 

 Morrone, Braemar (Crombie). The usual and typical corticole state may 

 also be expected to occur in the Highlands. 



L. hndocUneUa, Nyl. in litt. sp. n. On rocks in snbalpine regions. 

 Apparently local, having been found only on Lythe Hill, Salop (Leighton). 

 It is described in Mudd's ' Manual' as a var. of L. verrucidosa, under the 

 name of L. spuria, Scha.'r, and as such is also issued by Leighton, Exs. 

 189, from which, however, it is readily distinguished by the ick'de hypo- 

 thecinm. 



L. hntlcnlnrh, var. Gagn (Hook. Br. El. iii. \11) = Lichen dolosi/s, 

 E. B. 2,581. On slate rocks in snbalpine tracts. Apparently rare and 

 local in S.W. Ireland. An authentic specimen, vianu Sir W. Hooker, 

 occurs in Herb. Brit. Mus., from the O'Donoghue's Prison, Killarney 

 (Sir T. Gage). It is evidently to be regarded as a subspecies of L. 

 lenticiilnris, from which it is distinguished chiefly by the determinate rusty- 

 brown thallus, in small circular patches, and the minute dark-brown apo- 

 thecia with paler evanescent margin. The 'Lichen Gngei of E. B. 2580, 

 is, according to authentic specimens from Tayl. in Herb. Brit. Mus., only 

 a young state of Breomgces anomalns, Tayl., as in my Enum. p. 65. 



'Gigphis hdjgrinlhica, Ach. Syn. 107. On the trunks of trees in snb- 

 alpine regions. Rai'e and local in S.W. of Ireland, where it was formerly 

 gathered about Killarney by Sir T. Gage. This is a most interesting 

 species, belonging to a genus essentially tropical, though in recent years 

 it does not appear to have been again gathered in the above locality. 



Verrncoria fnsco-argiUacett, Anzi. Langob. 368. On moist calcareous 

 boulders in mountainous tracts. Rare, and as yet gathered only sparingly 

 on ('raig Tulloch and at base of Ben-y-gloe, in Blair Atholc (Crombie). 



V. Ilenschelittna, Krb. S. C. G. 336. On schistose rocks in moun- 

 tainous tracts. Apparently local, as on Ben Voirlieh (Dr. Stirton) and 

 Craig Tulloch (Crombie), but may be expected to occur elsewhere amongst 

 the Grampians. 



Melanotheca dijfnsa, Leight. in litt. sj). n. On the smooth bark of 

 trees in mountainous tracts. Apparently rare and local, having as yet 

 been found only on Nant Gwynant, Snovvdon (Leighton, 1865). 



N 2 



