Arthonia] i, discoliciienes (Wainio). 449 



Var. reducta Wain. 



Thallus albidus aut passim dilute roseus. Apothecia elongata, 

 angusta, circ. O'l ad 0*15 mm. lata, substellato-ramosa aut partim 

 simplicia, disco denudato nigricanteque, margine coccineo-pruinoso. 

 Hymenium jodo vinose rubens. Asci pyriformes, long. circ. 0"046, 

 latit. 0"028 mm. Spor^e decolores,vulgo 3-septata3, parce 4-septat8e, 

 long. 0-016 ad 0-020, crass. 0*003 ad 0-006 mm. 



Barka do Bengo. — Ad ramulos semiherbaceos inter S. Antonio de 

 Bengo et Quifandongo. No. 322. 



Var. rimata Wain. 



Thallus plus minusve coccineo-pruinosus. Apothecia oblonga, 

 opegmphoidea, margine elevate, nigricanto, denudato, disco 

 impi-esso, dilatato-rimseformi, nigricante, denudato. Hymenium 

 jodo persistenter cairulescens. Asci pyriformes. Sporfe Sna;, 

 decolores, ovoideo-oblongse, vulgo 5-septat8e, parce 6-septatse, 

 cellulis 2 mediis quam reliquis paullo longioribus aut cellulis 

 jcqualibus, long. 001 7 ad 0-022, crass. 0-005 ad 0006 mm. 



Benguella. — Ad ramulos Acackc ethairjv, in sylvestribus non procul 

 ab oceano prope Benguella. Xo. 3. 



Var. medusaeformis Wain. 



Thallus albidus. Apothecia elongata, crebre et abundanter 

 radiato-ramosa, disco piano fuscescente, tenuissime griseo-fusces- 

 centi-pruinosa, margine indistincto, passim maculis dilute roseis 

 circumdata. Hymenium jodo persistenter cserulescens, ascis 

 violascentibus. Sporse 8naj, 3 — 4-septat8e, cellula apicali quam 

 reliquis duplo longiore, long. 0-016 ad 0-018, crass. 0-005 ad 

 0-007 mm. Epithecium intense coccineum. Hypothecium dilutius 

 coccineum. 



LoANDA (0 ad 1000 ped. s. m.). Ad truncos Adansonia' digitatai 

 prope Represa do Manoel Pereira. No. 327 pr. p. 



Var. obscura Schser. ; Koerb., Syst. Germ. p. 291. Coniocarpon 

 (jregarhwi /3 obscurum Scliter., Lich. Helv. Exs. n. 649 ; Mass., 

 Summ. Animadv. (1853), p. 13; Hepp, Flecht. Eur. n. 163. 



Thallus vulgo livido-cinerascens. Apothecia nigra, difFormia, 

 brevia, nuda. 



GoEUNGO Alto. — Ad corticem Entandrnphrafjiudtis dufjolensi-'^ prope 

 Sange. No. 469. Perithecium laterals (sub microscopio visum) 

 coccineum. Asci clavati, latit. circ. 0022 mm. Sporaj decolores aut 

 dilute fuscescentes, long. 0-024 ad 0026, crass. 0009 ad 0010 mm., 

 4 — o-septatiu. 



11. A. rubella (Fee) Nyl., Syn. Arth. p. 89; Miill. Arg., 

 Graph. Feean. p. 56; Willey, Syn. Arth. p. 11. 



Hymenium jodo persistenter cairulescens, ascis pr. p. dilute 

 violascentibus. Epithecium sordide subrubescens. Hypothecium 

 pallidum. Asci ellipsoideo-obovoidei, long. circ. 0-050, cra.ss. 

 0*040 mm. Spora? 8naB, decolores aut demum dilute nigricantes, 

 3 — 5-septata;, cellula apicali quam reliquis duplo longiore, long. 

 0-026 ad 0-033, crass. 0-011 ad 0-012 mm. 



AMiJiiiz. — Ad truncum Eloidis tjuineensis. Xo. 360 pr. p. 



