Chiodecton. 147 



cansve. Hypothec turn pallido-fuscescens aut sordide pallidum. 

 Sporae clecolores, fusiformi-aeieulares, 4 — 7-septatae [„ — 9-septa- 

 tae": Mull. Arg., L. B. n. 1537], long. circ. 0,0 4 — 0,0 4 2 millim. 

 [,,0,035 — 0,052 millim.": Stirt., 1. c], crass. 0,003 — 0,004 millim. 

 [„—0,oo5 5 millim.": Stirt.]. 



Ad folia perennia arboris prope Lafayette (1000 metr. s. m.) 

 in civ. Minarum, n. 294 c. — Thallus opacus, maculas saepe 

 rotundatas, circ. 1 — 11 millim. latas forrnans, hyphis 0,002 — 0,ooi5 

 millim. crassis. Gonidia phycopeltidea, cellulis oblongis aut ob- 

 longo-cylindricis, 0,oos— 0,ooe millim. crassis, sat leptodermaticis, 

 ad septas lcvissime constrictis, in series radiantes concatenatis 

 et in membranam simplicem connatis. Apothecia thallo innata, 

 demum elevata, disco 0,2—0,5 millim. lato, piano. Perithetium 

 fusco-fuligineum, circ. 0,oi8 millim. crassum, conniventi-obliquum, 

 strato thallino (pseudostromate vel amphithecio) gonidia continente, 

 basi sensim in thallum abeunte obductum. — Hymenium circ. 0,0 9 

 millim. crassum, jodo fulvescens. Epithecium sordide pallidum, 

 fulvescens. Paraphyses circ. 0,ooi7 millim. crassae, apice haud 

 aut vix incrassatae, ramoso-connexae, superne flexuosae. Asci 

 clavati, circ. 0,012 millim. crassi, membrana tota leviter incras- 

 sata. Sporae 8:nae, apicibus attenuatis, obtusiusculis, halone nullo 

 indutac, cellulis cylindrieis, fere aequo longis. 



12. Oh. strigulinum (Nyl.) Wainio. Platygrapha striguloides 



Nyl., Enum. Geo. Lich. (1857) p. 131 (secund. specim. orig. e Bra- 

 silia in mus. Paris.), nomen postea ab auct. mutatum. PI. strigulina 

 Nyl., Lich. Andam. (1874) p. 13. Opegraplm radians Miill. Arg., 

 Lich. Beitr. (Fl. 1883) n. 685. Rotula radians Miill. Arg., Lich. 

 Epiphyll. (1890) p. 19. Rotula vulgaris Miill. Arg., Lich. Beitr. 

 (Fl. 1890) n. 1533. 



Thallus tenuis, crebre contextus, continuus, vulgo verrucu- 

 lis increbris instructus aut racliatim tenuiter costato-rugulosus 

 [„aut laevigatus": Miill. Arg.], glaucescens aut flavido-glaucescens, 

 hypothallo indistincto. Discus rotundatus, livido-nigricans nigri- 

 cansve. Hypothecium dilute fuscescens aut pallidum. Sporae cle- 

 colores, fusifbrmi-oblongae, 3-septatae, long. 0,oi8— 0,022, crass. 

 0,0 4—0,0 6 millim. 



Var. radians (Miill. Arg.) Wainio. Opegrapha radians Miill. 

 Arg., Lich. Beitr. (Fl. 1883) n. 685. Rotula vulgaris «. radians 

 Miill. Arg., Lich. Beitr. (Fl. 1890) n. 1533. 



