119 351 
Ad corticem arborum prope Rangoon in Burma britannica (leg. Johs. 
Schmidt). 
Area: In zonis calidioribus et temperatis provenit. 
Trib. 9. Thelotremeae. 
1. Thelotrema (Ach.) Eschw. 
35. Th. (Leptotrema) arecae Wain., Lich. Nov. Rar. IV (Hedwigia 
1907), p. 174. 
Thallus sat tenuis aut crassitudine fere mediocris, continuus, leviter 
inaequalis, cinerascenti- vel cinereoglaucescenti-albicans, sat opacus aut 
nitidiusculus, KHO haud distincte reagens (olivaceus). Excipulum verrucam 
depresso-subglobosam, circ. 1 (0,7—1,2) mm. latam, basi constrictam 
formans, thallo concolor, vertice impresso, ostiolo 0,2—0,4 mm. lato, 
rotundato, margine ostiolari integro, tenui, thallo subconcolore aut demum 
anguste nigricante. Apothecia crebra aut increbra, disco livido-nigricante. 
Perithecium dimidiatum, fuligineum, columella centrali fuliginea, apice 
circ. 0,140 mm., basi 0,080 mm. crassa. Sporae singulae, demum sat 
leviter obscuratae, oblongae, murales, cellulis numerosissimis, membrana 
parietali crassitie mediocri, jodo violaceo-caerulescentes, long. 0,120—0,180, 
crass. 0,026—0,040 mm. 
Perithecium basi deficiens. Hypothecium albidum aut sordidum. 
Hymenium circ. 0,220 mm. crassum, jodo haud reagens. LEpithecium de- 
coloratum, at passim granulis nigricantibus inspersum. Hypothallus in- 
distinctus. — Habitu simile est Thelotremati (Ocellulariae) cinchonarum 
(Fée) Wain. 
Ad corticem <Arecae catechu in insula Koh Chang (no. XX)J). 
36. Th. (Leptotrema) calathiforme Wain., 1. c. 
Thallus tenuis aut sat tenuis, continuus, sat laevigatus, glaucescens 
vel glauco-virescens, nitidus, KHO non reagens. Excipulum verrucam 
cire. 1—0,5 (—0,3) mm. latam, circ. 0,3—0,5 mm. (aut minus) elevatam, 
basin versus sensim dilatatam aut sat abruptam formans, ostiolo demum 
sat lato (circ. 0,8—0,3 mm.), rotundato, margine ostiolari denticulato- 
crenato aut subintegro, sat tenui, simplice aut rarius duplice, albo. Apo- 
thecia sat crebra aut increbra, disco caesio-livido, pruinoso. Perithecium 
pallidum, integrum, KHO fulvo-fuscescens (margine et basi), columella 
centrali nulla. Sporae 8:nae, distichae, ellipsoideae vel fusiformi-ellip- 
soideae, apicibus obtusis aut rotundatis, leviter obscuratae, murales, cellulis 
haud valde numerosis, septis transversalibus circ. 5—7, jodo violaceo- 
caerulescentes, long. 0,022—0,024, crass. 0,009—0,011 mm. 
Hypothecium albidum vel pallidum. Hymenium circ. 0,100 mm. 
crassum, jodo non reagens. Epithecium decoloratum aut pallidum, parce 
granulosum. Paraphyses simplices, tenues, apice vix incrassatae. — Th. 
(Brassiam) subcalvescens Nyl., Lich. Andam., p. 9, in memoriam revo- 
cans, at sporis obscuratis et margine apotheciorum magis elevato ab eo 
differens. Th. (Brassia) leucomelanum Nyl. thallo opaco et sporis de- 
coloribus a planta nostra differt. 
