102 A. -M. HUE. 



versim oblonga aut etiam reniformia, primum cortice thallino velata, dein denudata 

 atque margine thallino lenui cincla; sub illis pagina superior cum cortice gonidiis atque 

 hyphis medullaribus conlinuata. Epilhecium coloratum et amorphum; hypolhecium ex 

 hyphis septatis formatum ; paraphyses parum crassœ, constricte et remote septala: ; spora> 

 octonœ, fuscse vel fuscescentes, oblongœ. Spermogonia ad margines thalli sita; sper- 

 matia recta, apicibus leviler incrassata atque arthrosterigmatibus afflxa, Tulasne Mém. 

 Lich. p. 177 et lab. IX, 6g. 18-21. 



Sectio I. — Euinephroma Stizenb. 



Beilr. Flechtensystcm. (1862) p. 165; genus NephromaNy]. Enum. Lich. (1858) p. 101 et apud Hue 

 Addend. Lichenogr. europ. p. 50 et Lich. exot. n is 912-918, Miill. Arg. Conspect. System. Lich. 2V. 

 Zeland. (1894) p. 9; Gluck Entwurf Flecht.-Spermog. (1899) pp. 73 et 90. 



Haec sectio asequente non secernitur nisi gonidiis viridibus parvisque seu leptogonidiis, 

 conf. Bornet Recherch. gonid. I, pp. 24 et 25. 



365. Nephromaarcticum El. Fr. Lichenogr. europ. reform. (1831) p. 42, Nyl. Synops. 

 Lich. I, p. 316, tab. I, fig. 18 et lab. VIII, fig. 36 atque apud Hue Lich. exot. n. 912, Tuck. 

 Synops. North Americ. Lich. I, p. 103 et Lich. Americ. septentr. exsicc. n. 62, Forssell 

 Stud. Cephalod. (1883) tab. 1, fig. 6; Lichen arcticus L. Spec. Plant, p. 1616; Peltidea 

 arctica Wahlenb. (1812) p. 448 ; Lichen polaris Ach. Lichenogr. suec. Prodr. (1798) 

 p. 163; Peltidea polaris Ach. Method. Lich. p. 288; Nephroma < polaris Ach. Lichenogr. 

 univ.p. 521 et Synops. Lich. p. 241. Th. Fr. Lich. Suec. exsicc. n. 4; l'n. itin. cr. 1867, 

 Helbom, n. 6 ; NovvMnHerb. Lich. Fenn. n.38; Arn. Lich. exsicc. n. 1218 a , h . 



In Asia : in Japonia, in ins. peplentrionali Riishiri, n. 1405. 25 julii 1899. 



Thallus viridi-flavens, foliaceus, laie expansus, procumbens, membranaceus, rigidus, 

 subnitidus, K et CaCI extus et intus immutatus, lobatus, lobis 2-4 cent, latis, subimbri- 

 catis, ambitu sinuatis, supra lœvibus aut plus minusve ina-qualibus ; intus albidus ; sub- 

 tus niger rugosusque et rhizinis, nigris, parvis l'ulcranlibusque munitus atque ad peri- 

 pheriam pallide brunneus, etiam rugosus, sed salis late nudus. Cortex superior 40-15 (jl 

 latus, albidus et superne llavicans, pseudoparenchymaticus, hyphis superficiei perpendi- 

 cularibus 4-5 septatis, cellulas oblongas, pariete parum crasso, lumine 6-9 p. lato, in parte 

 supera minores et rotundas atque slrato amorpho, 6 jjl lalo superne leclas pra^bentibus cons- 

 tans. Stratum gonidiale crassum et continuum alque gonidiis 4-8 (a. latis formatum, conf. 

 Bornet Recherch. gonidies Lich. I, p. 24; hyphae gonidiales et medullares materia albida 

 tectae. Medulla ex hyphis 2-4 y. crassis, articulatis arliculis elongalis, pariete tenui, super- 

 ficiei parallelis et passim omnino perpendicularibus constans. Cortex inferior niger aul 

 brunneus, 10-16 y. latus. etiam pseudoparenchymaticus, cellulas rotundas, lumine 7-10 jx 

 lato, ostendens ; rhizinœ ex hyphis nigrescentibus, saepe fasciculatis, 3-4 pi latis et articu- 

 latis constitutee. Apotheeia 0,7-15 mm. (alibi 3-4 cent.) lata, lestaceo-rufa, plana, rolunda 

 vel basi subreniformia, postica, apicem versus lobuli lhallini enata et margine e lhallo 

 oriundo circumdata ; sublus primum omnino laevia, cortice superiore thalli continuante, 

 demum sat profunde rugosa. Sub apothecio corlex 60-80 jjl latus, dentatus (in apotheciis 

 bcne evolutis) et pseudoparenchymaticus, sicut thalli superior cortex; sub illo gonidia, 

 dein medulla laxa et demum hypothecium, leviter llavescens aut incoloratum, ex hyphis 

 strictissime implexis constans; epilhecium flavidulum; paraphyses 80 ;j. alta*. simplices, 

 2,5 [x crassœ, conslricte articulalae, articuliselongatis, et apice incrassata?, 3-4|i. metientes; 

 thecœ cylindrica? 60-70 pi longa? et 13-14 |x latœ, apice vix incrassatœ ; sporœ 8"'', leviter 



