462 II. PYREXOLICHENES (Wainio). [Sirlyula 



at sporis vulgo fusiformibus et apotheciis totis atris nudisqiie ab 

 ea difFerens. 



GoLUXGO Alto. — Ad faciem superiorem folii arboris Sapindaceae 

 prope Fonte de Capopa. No. 304 pr. p. Ad faciem superiorem 

 foliorum Fici urceolarls Welw. in sylva primitiva prope Quisuculo. 

 No 288 pr. p. 



Species sequentes, vorisimiliter sine apotheciis inexacte determinatae, 

 a Miill. Arg. in Lich. Afr. Occ. (Linna^a 1880) p. 41 commemorantur : 

 Sfr. coinplanata (Fde) Miill. Arg. var. cUvita (Mont.) Miill. Arg., Pyr. 

 Fe'e n. p. 5, Lich. Beitr. (1890) n. 1570 (ad fiumen Quillu : Pechuel- 

 Loesche), Str. elegans (Fee) Miill. Arg. var. fjenuina Miill. Arg., Pyr. 

 Feean. p. 5, var. viridis»hna (Fee) Miill. Arg., I.e., var. nematora Miill. 

 Arg., Pyr. Cub. p. 380, Lich. Beitr. n. 156G (ad Chinchoxo : Soyaux), 

 var. Feel (Mont.) Miill. Arg., Pyr. Cub. p. 380 (ad flumen Quillu : 

 Pechuel-Loesche). 



10. ARTHOPYRENIA (Mass.) Wain. 



1. A. (Polymeridium) obtecta Miill. Arg., Lich. Beitr. (1883) 

 n. G38. 



Sagedia ohtecta Miill. Arg., Lich. Afr. Occ. (Liniisea 1880) p. 42. 

 Verrucarm tecta Stizenb., Lich. Afr. p. 223. 



AJ corticem arboris prope flumen Quillu leg. Pechuel-Loesche, 

 teste Miill. Arg., I.e. 



2. A. (Acrocordia) recepta Mull. Arg., Lich. Beitr. (1883) n. 631. 

 Soujedia alboatra Miill. Arg., Lich. Afr. Occ. (Linntea 1880) p. 42. 



Verrucaria alboatra Nyl. var. recepta Stizenb., Lich. Afr. p. 223. 



Ad corticem emortuum et semiputridum Palmarum prope 

 flumen Quillu leg. Pechuel-Loesche, teste Miill. Arg., I.e. 



11. DIDYMELLA Sacc. 



Hoc genus gonidiis carens ad fungos perfcinet. 



1. D. Loandensis Wain., sp. n. 



Mycelium maculam albidam formans, gonidiis destitutum. 

 Apothecia verrucas hemisphsericas formantia, 0*3 ad 0"35 mm. 

 lata, nigra. Perithecium fuligineum, dimidiatum, hemisphairicum, 

 basi deficiens, denudatum aut basi tenuissime velatum. Nucleus 

 jodo non reagens. Paraphyses numerosae, ramoso-connexte. Asci 

 cylindrici. Sporae 8na;, distichaj, decolores, ovoideo-oblongae, 

 l-septatte, septo fere in medio, hand constrictaj, strato gelatinoso 

 nullo indutaa, long. 0013 ad 0-020, crass. 0-0035 ad 0-005 mm. 

 Sporis Verritcarm subiJrostaroti Nyl., Exp. Pyrenoc. p. 56, Lich. 

 Nov.-Gran. Prodr. p. 491 (Miill. Arg., Lich. Beitr. no. 633), 

 congruit, at apotheciis minoribus et ascis distichis ab ea differt et 

 habitu subsimilis Didi/mellaj cinchonce (Ach.) Wain., Etud. Lich. 

 Bres. II. p. 233. Ad fungos pertinet. 



Luanda (0 ad 1000 ped. s. m.). — Ad corticem arboris junioris prope 

 Maianga do Rei. No. 451 pr. p. 



12. TOMASELLIA Mass. 



1. T. euphorbiae Wain., sp. n, < 



Mycelium macula albida pallidave indicatum, gonidiis destitu- 

 tum. Pseudostromata 2 ad 0*5 mm. lata, diffbrmia, tenuia, ex 



