— 119 — 



Ad corlicem arborum prope Rangoon in Burma britannica (leg. Jobs. 

 Schmidt). 



Area: In zonis calidioribus et temperatis provenit. 



Trib. 9. Thelotremeae. 

 1. Thelotrema (Ach.) Eschw. 



35. Th. (Leptotremaj 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 baud 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, tballo subconcolore aut demum 

 anguste nigricante. Apothecia crebra aut increbra, disco livido-nigricante. 

 Peritbecium 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. 0,020—0,040 mm. 



Peritbecium basi deficiens. Hypotbecium albidum aut sordidum. 

 Hymenium circ. 0,220 mm. crassum, jodo baud reagens. Epithecium de- 

 coloratum, at passim granulis nigricantibus inspersum. Hypothallus in- 

 distinctus. — Habitu simile est Thelotremati (Ocellulariae) cinchonarum 

 (Fee) Wain. 



Ad corticem Arecae catechu in insula Koh Chang (no. XXI). 



36. Th. (Leptotrema) calathiforme Wain., 1. c. 



Tballus tenuis aut sat tenuis, continuus, sat laevigatus, glaucescens 

 vel glauco-virescens, nitidus, KHO non reagens. Excipulum verrucam 

 circ. 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. Peritbecium 

 pallidum, integrum, KHO fulvo-fusoescens (margine et basi), columella 

 centrali nulla. Sporae 8 : nae, disticbae, ellipsoideae vel fusiformi-ellip- 

 soideae, apicibus obtusis aut rotundatis, leviter obscuratae, murales, celluhs 

 baud valde numerosis, septis transversalibus circ. 5 — 7, jodo violaceo- 

 caerulescentes, long. 0,022 — 0,024, crass. 0,009 — 0,011 mm. 



Hypotbecium albidum vel pallidum. Hymenium circ. 0,100 mm. 

 crassum, jodo non reagens. Epithecium decoloralum aut pallidum, parce 

 granulosum. Paraphyses simplices, tenues, apice vix incrassatae. - Th. 

 (Brassiam) subcalvescens Nyl., Lich. Andam., p. 9, in memoriam revo- 

 cans, at sporls obscuratis et margine apotbeciorum magis elevato ab eo 

 differens. 71i. fBrassia) leucomelanmn Nyl. thallo opaco et sporis de- 

 coloribus a planta nostra differt. 



