RET. J. M. CEOMBIE ON NEW BRITISH LICHENS, 483 



somewhat plane or convex, immarginate, white within : spores 8 in 

 theese, colourless, oblong, simple, •009--017 millim. long, '0035- 

 •0045 millim. thick : paraphyses of medium thickness, lurid brown 

 at apex : hypothecium chalky-white in the middle, and black in the 

 lower stratum : hymeneal gelatine distinctly blue with iodine. 



On micaceous stones of a wall near Portlethen, Kincardine- 

 shire, south of Aberdeen, August 1868. Apparently rare, and 

 gathered but sparingly, notwithstanding a somewhat protracted 

 search. Its specific name seems to indicate its propinquity to 

 L. litJiopliila, Ach., a species not uncommon on the Welsh and 

 Grampian mountains ; but Nylander observes that it ought rather 

 to occupy a place amongst the BiatorcB of Fries, near to Z. 

 jpTiceo^ps, Nyl., a plant of Ben Lawers and Cader Idris. 



5. Lecidea mcestula, Nyl. in Flora, 1868, p. 344. Thallus greyish, 

 thin, subgranulate or evanescent ; apothecia black, minute or small, 

 plane or convex, numerous and crowded, usually immarginate, colour- 

 less within ; spores eight in thecal, colourless, elliptical, simple, -007- 

 •008 millim. long, •0025--0035 milhm. thick : paraphyses not discrete, 

 epithecium colourless or obscure; hypothecium obscurely brown 

 throughout: spermatia oblong, with short sterigmata : hymeneal 

 gelatine mne-red with iodine. 



On old rails near Lyndhurst, in the New Forest, Hants, Sep- 

 tember 1866. Abundant in the spot where gathered, and likely 

 to occur elsewhere in that neighbourhood, as also no doubt m 

 similar tracts at least in the south of England. Its systematic 

 place is near L. turgidula, Frs. ; and it is nearly allied to L. myrio- 

 carpoides, Nyl., a species not yet detected in Britain. 



6. Lecidea tenera, Nyl. in Flora, 1869, p. 83. Thallus greyish 

 green, thin, somewhat subgranulate, indeterminate, everj'where rimu- 

 lose : apothecia pale, minute, plane, with paler margin : spores eight 

 in thecffi, colourless, oblong or subbacillar, simple or obsoletely 1- 

 septate, -OOS-'OIO millim. long, •0015--0025 millim. thick: para- 

 physes of medium thickness, with clavate apex : epithecium and hy- 

 pothecium colourless : spermogones with oblong spermatia : hyme- 

 neal gelatine blue with iodine. 



On the smooth face of a granitic rock on the coast of Kincar- 

 dineshire, south of the bay of Nigg, August 1868. Though 

 ring plentifully in one spot in a shady situation, it was ^ seen by 

 me nowhere else in the neighbourhood, at least in a fertile state. 

 It is allied to L. glolulosa, Flk., from which it is distinguished by 

 the above characters. 



occur 



