380 148 
Apothecia crebre approximata, at maxima parte simplicia, parcé 
seriatim 2 vel plura connata. Pseudostromata nulla distincta. 
Ad corticem arboris vigentis in capite septentrionali insulae Koh 
Kong (no. XI). 
Area: Ps. ochroleuca in regionibus tropicis Americae, Oceaniae, Asiae, 
Africae crescit. 
90. Ps. (subg. Heterothelium sect. Homalothecium) endoxanthoides 
Wain., Lich. Nov. Rar. IV (Hedwigia 1907), p. 180. 
Thallus endophloeodes, albidus, laevigatus, leviter nitidus, linea hypo- 
thallina nigricante limitatus. Apothecia sat approximata, simplicia, ele- 
vata, verrucas circ. 0,3 (—0,25) mm. latas, hemisphaericas aut rarius 
conoideo-hemisphaericas, atras, nudas, parum nitidas formantia, vertice 
convexo aut minutissime subconoideo-umbonato. Perithecium depresso- 
subglobosum aut elevato-hemisphaericum, fuligineum, integrum, latere ab- 
rupto, haud attenuato-producto, basi tenui, fuliginea, applanata aut de- 
presso-convexa. Nucleus depresso-subglobosus aut elevato-subhemisphaericus, 
latere rotundato aut obtuso, materiam luteam, KHO non reagentem con- 
tinens. Paraphyses ramoso-connexae. Asci subcylindrici. Sporae 8 : nae, 
distichae, decolores, 3-septatae, loculis lenticularibus aut demum sphae- 
roideis, long. 0,018—0,022, crass. 0,006—0,008 mm. 
Materia lutea in nucleo inclusa KHO haud violascens, at tantum 
diluta. Sporae oblongae, altero apice rotundato, altero apice vulgo paulu- 
lum attenuato obtusoque, halone nullo indutae. — Ps. endoxanthae 
Wain., Lich, Antill. (Journ. of Bot. 1896), p. 32 (292), et Ps. subgre- 
gariae Mill. Arg., Pyrenoc. Cub. (1885), p. 408, Wain., Etud. Lich. Brés. II 
(1890), p. 213, subsimilis, at sporis minoribus et reactione nuclei cete- 
risque notis ab iis differens. 
Ad corticem emortuum in silva prope cataractam in insula Koh 
Chang (no. XVI). 
91. Ps, (subg. Heterothelium sect. 3. Hemithecium) diluta (Fée) Mull. 
Arg., Lich. Beitr. (Fl. 1883), no. 602, Pyrenoc. Cub. (1885), p. 408, 
Pyrenoc. Féean. (1888), p. 28. Verrucaria Fée, Ess. Crypt. Ecorc. Suppl. 
(1837), p. 85; Nyl, Syn. Lich. Nov. Cal. (1868), p. 91; Hue, Lich. Exot. 
(1892), p. 294. 
Var. degenerans Wain. 
Thallus evanescens, albidus. Apothecia sat approximata, sim- 
plicia, elevata, verrucas circ, 0,35—0,25 mm. latas, hemisphaericas 
aut conoideo-hemisphaericas, atras, nudas, opacas aut parum niti- 
das formantia, vertice convexo aut conoideo-convexo. Perithecium 
hemisphaericum aut conoideo-hemisphaericum, fuligineum, dimidia- 
tum, basi deficiens aut tenue, latere abrupto, haud attenuato-pro- 
ducto. Nucleus hemisphaericus, latere rotundato, basi vulgo plana, 
albidus. Paraphyses ramoso-connexae. Asci subcylindrici aut medio 
leviter incrassati, membrana tenui. Sporae 8:nae, distichae, deco- 
