OF ARTS AND SCIENCES. 173 



Exp.). Of the stock of L. suhfasca, but with rather the habit of 

 conditions of Rinodina sophodes. Patches about an inch in diameter. 



Lecanora dentilabra, sp. nov. : thallo crustaceo tenui areolato- 

 verrucoso glaucescente ; apotheciis (hitit. 0"""-, 5-0"""-, 9) adnatis, mar- 

 gine tumidulo mox fisso-subcrenato, disco fusco oi)aco jilano vel demum 

 tumente niarginemque exchidente. Hypothecium incolor. Spor« 

 octonie, ellipsoidese, simplices, incolores, longit. 0,012-25"""-, crassit. 

 0,010-16"™', paraphysibus conglutinatis. 



On bark, Island of Chiloe, Chili, and at Sandy Point, Straits of Ma- 

 gellan, Rev. T. Hill (Hassler exp.). Without doubt also of the sub- 

 fusca stock, the apothecia being characterized much as those of the 

 rupicoline L. ccesio-alba, Koerb., of Europe. 



Lecanora orosthea (Sm. L. expcdlens, Ach.) var. Japonica ; 

 apotheciis (latit. 2-3 millim.) elevato-sessilibus flexuoso-lobatis ; sporis 

 longit. 0,020-23™""-, crassit. 0,008-14™™-. — On beech-trunks in the 

 mountains near Hakodadi. Japan, C. Wright (U. S. N. Pac. Exp.). 

 Closely associable with our luxuriant North American condition of L. 

 orosthea, but differs in the development of the apothecia and the larger 

 spores, which I have only seen in 4'- and 6'-, in the thekes. L. orosthea 

 perhaps deserves the rank of a sub-species under L. varia. 



Lecanora Franciscana ; thallo verruculoso-granuloso albo-cine- 

 rascente ; apotheciis (latit. 0,7-1,5 mm.) pseudo-biatorinis liberis e 

 fusco-rufo nigris mox couvexis turgidisque marginem concolorem ex- 

 cludentibus. Hypothecium subduplex, superius incolor, inferius cras- 

 siusque fuscescens ; strato gonimo impositum. Spora3 octonje, ex 

 ellipsoideo mox oblongaj, biloculares, incolores, longit. 0,013-23™™-, 

 crassit. 0,003-5™™-, paraphysibus coalitis. — On sandstone, San Fran- 

 cisco, Cal., Dr. Bolander. A sub-species probably of L. erysibe (Ach.) 

 Nyl. Apothecia with the aspect of a Lecidea not very unlike a condi- 

 tion of L. enteroleuca, Ach., of the same rocks, but really biatorine, 

 except that the hypothecium rests on the gonimous layer. The reac- 

 tion of the hymeneal gelatine with iodine is blue. 



Rinodina radiata : thallo crustaceo rimoso-areolato ambitu radi- 

 oso-lobato glaucescente, hypothallo nigro ; apotheciis (latit. 0,3-0,7 ram.) 

 imnatis deln emergentibus, disco plauo-convexo tumidove nigro albo- 

 pruinoso, margine thallino integro demum disparente. Hypothecium 

 fusco-nigrum. Sporte octonaj, brevi-ellipsoide^e obtusas, biloculares, 

 fuscce, longit. 0,007-12™™-, crassit. 0,005-7™™', paraphysibus congluti- 

 natis. — Buellia radiata, Mihi in Lich. Calif, p. 25. 



b, thallo depauperato hypothallo radiante subfimbriato. Rocks on 

 the coast of California, Bolander. Referred to Buellia at the place 



