218 TRANSACTIONS OF THE 



mediocria convexa et immarginata intus obscura ; sporse Suae 

 incolores oblongfe simplices vel saepe 1-septatse vel spurie 1-septatae, 

 •012— -018 X -0045 — -0055 mm. ; paraphyses distinctse crassse 

 (crassit. '003 — -004 mm.) apicibus cceruleis clavatis interdum 

 ramosis; hypothecium incolor. lodo gel. hym. coerulescens 

 (saltern leviter) dein obscurata vel obscure violacea praesertim 

 thecae. 



The stipites are composed entirely of fibres closely compacted, 

 and arranged generally in a direction parallel to the length of the 

 stipites. There is no outer gonidiac layer nor cortex. 



Concerning this plant Mr. MacOwan remarks : — Curiosissima. 

 In rimis rupium brecciatarum ad ripas aridas Kl. Vischrivier. 



Lecidea peltasta (Stn.), sp. nov. 



Sat sirailis L. decipienti sed thallo K sordide purpurarcenti. 

 Squamae rotundatae umbilicato-adfixae (latit. 1 '5 - 4 mm.) margine 

 planae, subtus pallidae; sporse oblongae, -01 — -014 x -0045 — -006 

 mm. ; paraphyses baud distinctae apicibus late fuscescentibus ; 

 hypothecium incolor. lodo gel. hym. coerulescens dein obscure 

 et intense vinose violacea. Terricola. 



As I cannot lay hands on my specimens of L. decipiens from 

 Ben Lawers, I depend on Mr. Leighton's decision with reference 

 to the chemical reactions of the thallus in British specimens, 

 viz., K— C— . 



Lecidea stictella (Stn.), sp. nov. 



Thallus vix ullus visibilis; apothecia nigra plana rugosula 

 marginata minuta (latit. -1 - -2 mm.) ; sporae Suae incolores 

 oblongae vel fusiformi-oblongae, 1-septatae, -008 — -01 x -003 — 

 •0035 mm. ; paraphyses graciles distinctae apicibus sordide viola- 

 ceis crasse clavatis (clavae latit. -003 - -005 mm.) ; hypothecium 

 incolor. lodo gel. hym. coerulescens dein sordide violacea. 

 Corticola, cum Physcia fibrosa immixta. 



Forte afiinis L. lenticulari (Ach.) 



Lecidea luteola (Ach.) 



var. conspondens (Nyl.) 

 var. chlorotica (Ach.) 



Corticola. 



The latter may be L. chlorophceata (Nyl), as the apothecia are 

 often conglomerate. 



Lecidea millegrana (Tayl.) 



