or 



356 PKOF. T. M. FRIES ON THE LICHENS 



Var. /3. tenuis ( Wrbg.), Th. Fr. In many places in the vici- 

 nity of Eloeberg Beach ; summit of Cape Union ; Discovery Bay ; 

 Polaris Bay ; Hannah Island, Bessel Bay ; Cape Sabine. 



On the underside of a stone from Crossing Harbour there are, 

 where hidden from the sunshine, fragments of this lichen with 

 entirely white thallus, quite wanting chrysophanic acid, but con- 

 taining green gonidia in abundance. Only round the youn 

 apothecia a slight yellow colour is to be observed, which by the 

 hydrate of potash changes into rosy. 



32, Caloplaca cerina (Ehrh.\ Th. Fr. 



On mosses, old bones, and wood of Salix. Floeberg Beach ; 

 Westward-Ho ! Valley ; Discovery Bay ; Cape Sabine. 



Obs. Callopisma rnydaleum, Korb. Zw. Deutsch. Polarf. ii. p. 78, 

 differs, according to the original specimens, in nothing essential 

 from Caloplaca cerina, 



33. Caloplaca celata, n. sp. Crusta tenuissima, disperse 

 verruculosa, cinerea vel obsoleta ; apotheciis parvis, confertis, 

 primum concavis, dein planiusculis, margine thallode crassiusculo, 

 elevato, subintegro vel repando, cinereo persistenter cincto ; disco 

 nigricante, tenuiter pruinoso ; paraphysibus apice capitulo dilute 

 livido violascenteve instructis ; sporis ellipsoideis vel ovoideis, 

 polari-diblastis. 



On old bones, very rare at Floeberg Beach ; a few apothecia on 

 mosses at the same locality. 



In its habit so completely does it resemble a young Binodina tur- 

 facea that it was with great surprise that I found it did not belong 

 to that plant. Among the Caloplaca it is doubtless most nearly 

 allied to C. cerina ; but so far as I can judge from the few and small 



specimens, it is clearly distinguished, especially by the colour of 

 the disk and the tips of the paraphyses. — Apothecia ad 0*7 mm. 

 diam. metientia, Hypothecium incoloratam ; paraphyses facillime 

 libera^, ramosa*, apicem versus articulate, capitulo instructs K 

 iutensius distincteque violascente nee roseo ; asci inflato-cla- 

 vati ; spone 8nae, 0*010-0013 mm. longse, 0005-0007 mm. 



crassa?. 



31. Caloplaca citeina (Hqffm.), Th. Fr. 



On sandy earth in the vicinity of c Alert's ' winter-quarters. 



35. Caloplaca pyracea (Ach.\ Th. Fr. 



On stones, mosses, bones, old wood, sprigs of willows and 





