Graphis] i. discolichenes (Wainio). 437 



5. Gr. Ambrizensis Wain., sp. ii. 



Thallus tenuis, continuns, opacus, sat Isevigatus, albiJus, KHO 

 lutescens et demum rubescens, hypothallo obscurato partim 

 limitatus. Apothecia appx'oximata, elongata, long. circ. 6 ad 2 

 mm., latit. circ. 0*4 ad 0"3 mm., simplicia aut pai'cius ramosa-, 

 vulgo curvata aut flexuosa, demum levitev elevata, basi abrupta 

 aut constricta. Perithecium latere fuligineum, basi albidum, 

 labiis conniventibus, demum passim anguste hiantibus, superne 

 denudatis, inferne amphithecio thallino obductis. Discus rimse- 

 formis aut demum leviter dilatatus, nigricans, nudus. Hymenium 

 jodo non reagens. Epithecium fuscescens. Sporse solitariae, 

 murales, decolores, jodo violascentes, long. 0*054 ad 0"065, crass. 

 ()'014 ad 0'016 mm. Comparabilis cum Gr. suhcontorta Miill. 

 Arg., Lich. Parag. p. 24, quse sporis majoribus differt. 



Ambriz. — Ad corticem arboris Encumbi (i.e. Calesktm antiscorhutica). 

 Xo. 392. 



6. Gr. obtecta (Nyl.)Wain. Nyl., Lich. Nov.-Gran. ed. 2, p. 36S 

 (excl. var.), Fl. 1869, p. 72 (pro parte). 



GrapJiina ohtectcc Miill. Arg., Lich. Afr. Occ. (Linnrea 1880), 

 p. 37 ; Lich. Beitr. n. 474. 



Ad cortices secus flumen Quillu leg. Pechuel-Loesche teste Miill. 

 Arg., Lich. Afr. Occ. p. 37. 



Ins. Principis. — Ad truncos arborum. No. 359. 



7. Gr. subnitida Nyl. in Leight. Lich. Amaz. p. 453; Nyl., 

 Lich. Guin. p. 49 ; Wain., Lich. Antill. p. 25. 



GoLUNGO Alto. — Ad corticem arboris Zanthoxylacese in Alta 

 Queta. No. 356 pr. p. Sporaj 8nse, decolores aut dilutissime palles- 

 centes, jodo non reagentes, septis trans versalibus circ. 10, cellulis sat 

 numerosis, Jong. 0'025, crass. 0"0r2 mm. 



8. Gr. sorediella (Miill. Arg.) Wain. 



Graphinasorediella Miill. Arg., Lich. Afr. Occ. (Linnaeal880), p. 38. 

 Corticola in pianitie depressa secus flumen Quillu a Pechuel- 

 Loesche lecta. 



9. Gr. straminea Wain., sp. n. 



Thallus crassitudine mediocris, continuus, leviter subgranuloso- 

 inaequalis, opacus, stramineus aut rarius testaceo- vel ochraceo- 

 stramineus, neque KHO, nee Ca CI2O2 distincte reagens. Apothecia 

 oblonga aut difformia, long. circ. 2"5 ad 07, latit. 0*7 ad 0*6 mm., 

 leviter elevata. Discus planus, stramineo-pruinosus aut demum 

 denudatus nigricansque, amphithecio thallino pei-ithecium tenue 

 obducente, leviter elevato, basi constricto, labiis hiantibus, cx-assi- 

 tudine mediocribus instructo cinctus. Perithecium laterale et 

 basale tenue, fusco-rufescens aut pallidum. Epithecium pallidum 

 aut flavescens. Hymenium jodo non reagens. Sporte solitarise, 

 murales, cellulis numerosissimis, decolores, jodo violascentes, long, 

 circ. 0-110 ad 0-150, crass. 0-025 ad 0040 mm. Amphithecium 

 intus jodo cairulescens. Medulla thalli jodo non reagens. 



Var. flavida Wain. Thallus stramineus. 



VOL. II. 29 



