NEW LICHENS FEOM THE I8IANB OF B0DEIQC7EZ. 263 



white- or greenish-white- pulverulent (K — ) ; apothecia small, brown, 

 but not seen rightly developed. On rotten stumps of trees. 



2. Usnea dasi/pogoides, Nyl. — Somewhat similar to U. dasypoga 

 but having the thallus sub-yellowish, smooth, glabrous, and only in 

 the ramules or fibrilla3 slightly setulose. Apothecia not seen. On 

 the trunks and branches of trees. 



3. Pyxine petricola, Nyl. — Thallus glaucescent, diffuse (K — ), 

 laciniae subintricately contiguous, adnate ; apothecia black, plane, 

 lecideine, margined ; spores Snee, blackish, oblong, bilocular ; 

 epithecium bluish-black, hypothecium nearly colourless. On rocks. 



4. Pannaria luridula, Nyl. — Thallus lurid, squamulose, the 

 squamules crenate or crenato-lobulate, subintricate ; apothecia 

 testaceo-reddish, lecanorine, with thickisb, crenate thalline margin ; 

 spores ellipsoid. 



5. Heppia Rodriguesii, Cromb. — Thallus nearly similar to that of 

 Lecanora cervina (Pers.) ; apothecia small, reddish flesh-coloured, con- 

 cave, innate ; spores numerous, shortly ellipsoid, paraphyses slender ; 

 syngonimia usually small, and containing but few gonimia. On rocks. 



6. Lecanora aurantiella, Nyl. — Subsimilar to L. aurantiaca 

 * erythrella, but with smaller and innate apothecia and smaller spores. 

 On rocks. 



7. L. glaucofuscula, Nyl. — Thallus glaucous-greyish, thin, con- 

 tinuous, subrimose ; apothecia small, brown, subinnate, plane, with 

 thin thalline margin ; spores 8na?, colourless, placodine ; epithecium 

 K purplish, hypothecium colourless. 



8. L. apostatica, Nyl. — Thallus whitish, thin, areolato-rimose, 

 hypothallus bluish-black ; apothecia black, lecideine, plane, margined, 

 whitish within ; spores 8nae, colourless, placodine ; spermogones 

 with arthrosterigmata. On rocks. 



* L. ohliquans, JS'yl. — This differs in having the thallus greyish, 

 very thin, continuous, and the epithecium being often white-suffused. 

 Also saxicole. 



9. L. carneofusca, Nyl. — This species approaches to L. camptidia. 

 Tuck., from which, amongst other marks, it differs more especially in 

 having the thallus areolato-rimulose, and the spores somewhat larger. 



10. Z. achroa, Nyl. — Thallus glaucescent, rugulose, at length 

 rimose (K yellow) ; apothecia pale-yellowish, plane, superficial, the 

 thalline margin more or less crenated ; spores Suae, ellipsoid ; epi- 

 thecium granuloso-inspersed ; spermatia slightly arcuate. On the 

 bark of trees. 



11. Z. achroella, Nyl. — Thallus glaucescent, smoothish, rimulose 

 (K yellowish) ; apothecia pale-yellowish, plane, subinnate, minute, 

 the thalline margin thin, entire ; spores Suae, ellipsoid ; epithecium 

 scarcely inspersed ; spermatia arcuate. On the bark of trees. 



12. L. perlutescens, Nyl. — Allied to L. lutescens (DC), but, 

 amongst other differences, distinguished by the smaller, more determi- 

 nate thallus and by the smaller spores. Thallus and apothecia K -f- 

 red or orange ; spermatia arcuate. Corticole. 



13. L. comzopta, Nyl. — Thallus white, thin, opaque, rimulose (K 

 yellow) ; apothecia yellow flesh-coloured or yellowish-red, subinnate, 

 plane, thalline margin uneven, depressed ; spores Snse, ellipsoid, 

 simple. Corticole. 



