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287 



dioso-sabfi&riaosae, discus demum deaudatus albus, piano-con- 

 vexuSy et ascis hinc indeemergeDtibuscarneo-punctatus; lamina 

 hyaliaa^ asci globoso-obOTOidei, auperne satis pachydermei^ 

 8-£tpori ; sporae hyalinae, circ, 15-septatae, elongato-elUpsoideae, 

 55—70 ft longae et 18—23 ji latae. — Sporae muUiseptatae ut 

 in PMydidia B<Aivi^m {Phljfidide BoUmensi KyK Lich. exotPeruF. 

 p. 221 et Llch. PortKatal p. 6), sed duplo breviores ei habitus 

 omnioo alius, sc. ut in Phiydidia sorediiformi {PMy^ide soredii- 

 form Erplh. Lich. Glaz. p, 30), cujus sporae omnino aliae et 

 Tcrrucae fertiles duplo majores. Reliquae americanae hujus ge- 

 neris antea notae, sc. PMycUdia BrasiUensis (PUyc&s SrasiUeims 

 %L Lich. Glaz. n. 29) et PMycUdia Andmsis (PhyeUs Andenm 

 NyL lich. Angol. p. 9 obs. ad n. 18) jam habitu simul et apo- 

 theciis et sporis di£ferunt, — Crdscit in corticibus ofBdji« Gin- 

 ohonarum (ex hb, cl. Hampe). 



221, JrthoihdiumfielHdosum 'hiiilh Axg.^ thallus nebuloso-albpa, 

 tenuisfiimus, maculas circ. poUicem latas aubrotundas inargine 

 effusas formans, laevls (dein substrati contractione nmulosus); 

 apothecia copiosa, ^^ — 7i ^^* ^^^^ anguloso-orbicularia v. 

 demum brcTissime radiatim et irregularlter paucilobata, planius- 

 cula, et teauissime rugulosa^ sicca fumoso-nigriciintia, made- 

 facta in disco ex aquoso olivaceo-fusca et subpellucida, in pe* 

 ripheria caeterum immargioata obscuriora remanentia ; epithe- 

 cium olivaceo-nigricanflf lamina cum hypothecio oliTaceo-bya- 

 lina s. fumoso-Tirens, asci obovoidei, basi angustati, apice late 

 rotundato-obtosi, pachydermeif 8-spori; sporae hyalinae, 18 fi 

 longae, 7 — 8 ft latae, 6-locuiares, loculi transversim 2~3-iocel' 

 laU. — Proxime accedit ad Arthotkdiwn dbnorme (Artkomam oft* 

 noraiem Hyl, Syn, Lich, Nov, Caled. p. 64), sed sporae minus 

 dirisae, lamina alitor colorata et apothecia hand nigra magis- 

 que orbicularia. Ab ArOk}thelio taedioso (AHhotUa taediosa Nyl, 

 Chili p. 62 et Prodr. Nov. Gran, p. 136) jam sporis multo mi- 

 Doribus et apotheciis minus lineari-difformibus distinguitur, — 

 Crescit in facie interiore caulium Bambusarum (nisi Mlor e 

 fragmentis visis) prope Caracas: Br. Ernst (sine no.). 



222. Arthoma septenUocuhris Mall Arg., thallus tenuissimus, 

 argillaceo-pallidusj laevigatus^ linea fusca cinctus; apothecia 

 */$— Va »^™' 1^**) orbicularia, depreeso-hemisphaerica, obscure 

 cinnamomeo-fusca, nuda, margine baud prominent e tenui nunc 

 disco paullo pallidiore t. et^m eo obscuriore (in sectione rer* 

 iicali a thallo discreto) demum suberanescente cincta, hand 



