352 420 
Ad truncos arborum in silva prope cataractam in insula Koh Chang 
(no. XXIil). 
37. Th. (Brassia) Asiaticum Wain., J. c. p. 175. 
Thallus tenuis aut sat tenuis, continuus, crebre aut sparse verrucu- 
losus, ceterum sat laevigatus, glaucescens aut stramineo-glaucescens aut 
olivaceo-glaucescenti-variegatus, nitidus, KHO parum reagens (olivaceus). 
Excipulum verrucam circ. 0,7—0,3 mm. latam, depresso-hemisphaericam 
aut parum elevatam, basin versus sensim dilatatam formans, ostiolo circ. 
0,1—0,4 mm. lato, rotundato, margine ostiolari tenui, integro, thallo sub- 
concolore aut magis albido. Apothecia sat crebra aut partim sparsa, 
disco livido-nigricante. Perithecium fuligineum, subintegrum, latere mediocre 
aut sat tenue, basi tenue, columella centrali fuliginea, crassitudine medi- 
ocri. Sporae 8: nae, distichae, ellipsoideae vel ellipsoideo-oblongae, apici- 
bus rotundatis, decolores, septis transversalibus 5—4, demum murales, 
cellulis paucis, jodo violaceo-caerulescentes, long. 0,014—0,017, crass. 
0,006—0,007 mm. 
Thallus linea hypothallina fusconigricante angusta limitatus. Hyme- 
nium circ. 0,090 mm. crassum, jodo non reagens. Epithecium decolo- 
ratum. Paraphyses simplices. Sporae halone nullo indutae, primum 
loculis lenticularibus instructae. — Huic habitu subsimilia sunt: Th. sub- 
conforme Nyl. in Cromb., Lich. East As. (Journ. of Bot. 1882), p. 53, 
apotheciis incoloribus et sporis paullo majoribus secund. descriptionem 
recedens (nu. 22587 in herb. Nyl.), et Th. concretum Fée (Th. myrio- 
carpoides Nyl., Lich. Nov.-Gran., p. 326), sporis majoribus et perithecio 
fulvo differens. 
Ad corticem arboris in silva prope cataractam in insula Koh Chang 
(no. 40). 
38. Th. (Ocellularia) Siamense Wain., 1. c. 
Thallus tenuis aut sat tenuis, continuus, verruculis crebre instructus, 
sordide glaucescenti-albicans, opacus, KHO bene rubescens. Excipulum 
verrucam circ. 1—1,5 (—2) mm. latam, circ. 0.6 mm. altam, hemi- 
sphaericam, basin versus sensim dilatatam aut sat abruptam, plus minusve 
verruculoso-inaequalem formans, ostiolo circ. 0,1—-0,15 mm. lato, rotun- 
dato, margine ostiolari tenui, integro, thallo subconcolore aut magis albido. 
Apothecia sparsa, disco nigricante (circum columellam apice demum 
albidam, in ostiolo demum visibilem). Perithecium dimidiatum, latere 
fuligineum tenueque, basi deficiens, columella centrali fuliginea, crassa. 
Sporae binae aut paucae in ascis, decolores, fusiformes, pluriseptatae, 
jodo violaceo-caerulescentes, long. 0,030—0,110, crass. 0,012—0,014 mm. 
Hymenium circ. 0,270 mm. crassum, jodo non reagens. Epithecium 
partim decoloratum, partim granulis obscuratis inspersum. Hypothecium 
decoloratum. Sporae 2:nae-——3:nae visae, septis 11—17, loculis lenti- 
cularibus, membrana sat tenui, halone nullo indutae. Paraphyses sim- 
plices. Columella fuliginea, apice strato albido obducta, basi sensim dila- 
tata, cire. 0,800 mm. lata, apice circ. 0,280 mm. crassa. — Th. dolicho- 
tatum Nyl., Sert. Lich. Lab. (1891), p. 19, huic valde affine videtur et 
habitu subsimile, at ascis monosporis ab eo differt et, secundum iconem 
