406 I. DiscoLiCHENES (Wainio). [Pertusaria 



apothecia 1 ad 4 continentia. Sporse Snse, monostichse aut 

 distichEe, long. 0-020 adO-030, crass. O'OIO ad 0'016 min.,membrana 

 sat tenui, haud mucosa, stratis laevigatis. 



GOLXINGO Alto. — Ad truncos vigentes in sylvis primsevis mentis 

 Serra de Alta Queta. No. 436. 



8. P. Angolensis Wain., sp. n. 



Thallus tenuissimus aut evanescens, albidus. Pseudostromata 

 hemisphserica aut conoidea, 0-3 ad 0'5 mm. lata, ochracea aut 

 albida, KHO intense lutescentia, apice convexo, ostiolo puncti- 

 formi, nigricante pseudostroma subsequante, apothecium unum 

 continentia aut rare duo confluentia. Sporse binse aut 4n8e aut 

 Snse, monostichae, long. 0'065 ad 0-090, crass. O'OIS ad 0-030mm., 

 membrana circ. 0-004 mm. crassa, haud miicosa, stratis sat 

 sequalibus Isevigatis. 



Var. ochracea Wain. Pseudostromata ochracea. Sporse binse. 



GoLUNGO Alto. — Ad truncos Grewiw locis arboribus rare obsitis 

 in montibus Serra de Alta Queta. No. 442 pr. p. 



Yar. albella Wain. Pseudostromata albida. Sporse 4nse — Snse. 

 In eodem specimine cum var. ochracea. 



9. P. eryptoearpoides Wain., Etud. Lich. Bres. I. p. 112. 

 GoLTJNGO Alto. — Ad ramulos arboris "dizanba" (i.e. TrecuUa 



africana) in sylva juxta basin montis Serra de Alta Queta. No. 183. 

 Fert. 



Sporse long. circ. 0042 ad 0-050, crass. 0-018 ad 0-020 mm., Snse ad 

 4nse, monostichse aut distichse, stratis membranse Isevigatis. 



10. P. arthonioides Wain., sp. nov. 



Thallus sat tenuis aut mediocris, rugosiis, pallido-albidus, 

 KHO neque extus, nee intus reagens. Pseudostromata indis- 

 tincta aut demum leviter elevata, irregularia, apothecia vulgo 

 plura (1 ad 7) continentia. Ostiolum arthoniomorphum, dila- 

 tatum, rotundatum aut ellipsoideum, latitudine circ. 0-2 ad 

 0-4 mm., pallidum, pseudostroma sequans. Asci cylindrici. 

 Sporse Snse, imbricato-monostichse, aut distichse, stratis sequa- 

 libus, Isevigatis, haud gelatinosis, long. 0-060 ad 0-066, crass. 

 0-025 ad 0-028 mm. 



GoLDNGO Alto. — Ad truncum arboris (Mutala-Menha Cafele, i.e. 

 Millettia nudiflora Welw. No. 1850) in sylvis. No. 174 pr. p. 



Tkib. IV. — Theloschiste^. 



1. THELOSCHISTES (Norm.) Th. Fr. 



1. Th. flavicans (Sw.) Miill. Arg. 



P. glabra Wain., Etud. Lich. Br6s. I. p. 114. 



GoLtiNGO Alto. — Frequenter ad ramulos emortuos arborum in 

 omnibus declivibus sylvaticis montis Serra de Alta Queta. Nos. 82 

 et 83 pr. p. 



Thallus sorediosus. Raro fert. 



P. oinerascens Stein.; Mull. Arg., Lich. Afr. Trop. (1890), p. 338. 



