LIGHENES EXTRA-EUROP^I. 55 



— F. 2. auréola Nyl. Synops. Lich. I (1858-1860) p. 411 ; Parmelia auréola Ach. 

 Lichenogr. univ. p. 487 et Synops. Lich. p. 210; P. parietina^ auréola El. Fr. Liche- 

 nogr. europ. reform. (1831) p. 73 ; Xanthoria parietina var. auréola Th. Fr. Lich. arctoi 

 (1860) p. 67, Flagey Catal. Lich. Alger, p. 20 et Lich. algériens, exsicc. n. 16; Ph. 

 parietina var. auréola (Ach.) Nyl. Lich. Pyren. Orient, exsicc. n. 55, Harm. Lich. 

 Lothar. n. 357, et Johns. The North Engl. Lich. Herb . n. 85. 



In Africa : 1. in Algeria legit Durieu de Maisonneuve supra saxa et Cladoniœ pyxidatœ 

 Fr. immixlam in Bab-Azoon, 30 januarii 1840. — 2. In regione Tunetana legit cl. Patouil- 

 lard saxicolam in loco dicto La Malga, anno 1897. 



Thallus fulvens vel auranliaco-i'ulvescens ; ambitu laciniae similiter radiantes, sed 

 centrum versus torulosae atque etiam granulatœ et apotheciorum margo crenulatus. 



VigeL insuper et prœcipue ad littora maris in Africa (.Egypto, regionibusaustralibus, ins. Madera 

 et Teneriil'a); in America borea et australi; in Oceania (Australia et Nova Zelandia) ; in Europa. 



337. Physcia polycarpa Nyl. apud Lamydela Chap. Catal. Lich. Mont-Do re (1880) 

 p. 45 ; Lichen polycarpus Ehrh. Plant. Cryptog. Linn. exsicc. (1785) n. 136; Lobaria 

 polycarpa Hoffm. Deutschl. Flora II (1795) p. 159 ; Parmelia candelaria |3 polycarpa 

 Ach. Method. Lich. (1803) p. 187 ; Lecanora candelaria p polycarpa Ach. Lichenogr. 

 univ. (1810) p. 164 et Synops. Lich. p. 192; Parmelia parietina f. polycarpa El. Fr. 

 Lichenogr. europ. reform. (1831) p. 73; Physcia parietina var. polycarpaNyl. Prodr. 

 Lichenogr. Gall. et Alger. (1857) p. 60 et apud Hue Lich. exot. n. 936, Linds. Mem. 

 Spermog. filament. Lich. tab. XIV, fîg. 1 ; Xanthoria parietina p polycarpa Th. Fr. Lich. 

 arctoi (1860) p. 68; A', lychnea p polycarpa Th. Fr. Lichenogr. scand. (1871) p. 146; 

 Theloschistes parietinus var. polycarpus Tuck. Gênera Lich. (1872) p. 20; Th. polycar- 

 pus Tuck. Synops. North Americ. Lich. I (1882) p. 50; Parmelia parietina p polycarpa 

 Schger., Hepp Flecht. europ. n is 54 et 595; Xanthoria parietina f. polycarpa Arn. Lich. 

 exsicc. n. 747 e ; A', polycarpa Flag. Lich. algériens, exsicc. n. 203; Physcia parietina 

 var. polycarpa Malbr. Lich. Norm. n. 68 ; Physcia polycarpa Nyl., Harm. Lich. Lothar. 

 n. 359 et Johns. The North Engl. Lich. Herb. Lich. n. 87. 



In America : in Ohio ad ramulos emortuos legit Sullivan!. 



Thallus pallide flavus, rosulas diamet. 5-10 mm. latas formans, tenuis, opacus, K supra 

 violaceo-purpureus; laciniœ angustœ, 0,2-0,4 mm. lalae, margine et apice microphyllino- 

 dissectse et etiam granulato-crenulata?, in peripheria radiantes et in centro apotheciis 

 omnino ohtectœ ; subtus albœ atque rhizinis parvis albidisque munitae. Cortex superior 

 20 30 a latus, albidus atque superne in zona angusta corpusculis flavis, K violacée pur- 

 puraceo-dissolulisobsitus,pseudoparenchymaticus,exhyphissuperficieiperpendicularibus, 

 3-septatis, cellulas subrotundas vel oblongas, lumine testaceo, 6 y. lato, pariete tenui, 

 efficientibus constans. Gonidia 10-14 [j. lata, sub cortice in strato interrupto vigentia 

 atque inter hyphas gonidiales albidas. 3 [>. crassas, parietibus tenuibus, lacunose implexas 

 et eliam, sed rarius, sub cortice inferiore dispersa. Medulla defïciens. Cortex inferior 

 30-40 latus et superiori similis atque in zona externa angustissima K violacée purpuras- 

 cens. Apothecia 0,6-1 mm. lata, valde numerosa et in thalli centro elevato-acervata, 

 margine thallo concolore primum tumido et dein tenui et discum aurantiacum fere 

 aequante ornata. Excipulum 40 \j. latum et corLici superiori simile ; in margine 

 10 p. tantum lato atque dein ex hyphis septatis reteque parvum formantibus atque stric- 

 tissime coadunatiset sub hypothecioangusto albidoque in strato distincto conlinuatiscons- 

 titutum ; epithecium flavo-granulosum atque K violacée purpureo-dissolutum; paraphyses 

 70 (i. altœ, 2 \x crassse, articulata?, non raro ramum superne emittentes, atque ibidem 

 2-3 cellulas rotundas et 4-5 p. metientes preebentes; thecœ primum cylindricœ et 

 demun ventricosaî ac tune 50 ij. longœ et 25 \x latœ ; spora? 8 n;c , hyalin;^, polariloculares, 



