— 150 — 



vexas aut conoideo-convexas formantia. Perithecium fuligineum, dimidiatum. 

 Paraphyses ramoso-connexae. Asci subcylindrici. Sporae 8 : nae, dislichae 

 aut subdistichae, demum obscuratae aut pro parte decolores, ovoideae, 

 1-septatae, septo fere in medio sporae aut cellula crassiore etiam paullo 

 longiore, halone nullo indutae, long. 0,014—0,016, crass. 0,005—0,006 mm. 



Apothecia opaca. Perithecium lateribus acutis, at non attenuato-pro- 

 ductis, basi deficiens, at columella centrali fuscescente instructum. Nucleus 

 albidus, lateribus acutis, guttulas oleosas baud continens. Paraphyses 

 tenues. Asci long. circ. 0,070, crass. 0,010 mm., apice membrana in- 

 crassata. Sporae medio leviter conslrictae, altero apice rotundato, altero 

 obtuso. Thallus in hoc specimine evanescens, forsan gonidiis chroolepoi- 

 deis instructus, at talia non satis distincte observavi. 



Ad corticem arboris prope cataractam meridiem versus a Statione 

 navali Lem Dan in insula Koh Chang silam (no. IV). 



Didymella Sacc. 



Genus ad fungos pertinens. 



D. ciuchonae (Ach.) Wain., Etud. Lich. Bres. II (1890), p. 233, 

 Lich. Antill. (Journ. of Bot. 1896), p. 36, Gat. Welw. Afr. PL II, Part II 

 (1901), p. 462. Verrucaria Ach., Syn. Lich. (1814), p. 90; Nyl., Lich. 

 Nov.-Gran. ed 2 (1863), p. 122; Hue, Lich. Exot. (1892), p. 296. Ar- 

 thopyrenia Mull. Arg., Lich. Beitr. (Fl. 1883), no. 615, Pyrenoc. Gub. 

 (1885), p. 404, Pyrenoc. Feean. (1888), p. 26. Verrucaria prostans 

 Mont., Gent. PI. (Ann. Sc. Nat., 2 ser., Bot. XIX, 1843), p. 53, no. 81, 

 Syll. Gr. (1856), p. 365; Nyl., Exp. Syn. Pyrenoc. (1858), p. 57. 



Thallus hypophloeodes, macula pallida aut partim subalbida indi- 

 catus, linea nigricante hypothallina limitatus, gonidiis carens. Apothecia 

 sparsa, rarissime parce confluentia, maculas rotundalas, nigras, 1 — 0,5 mm. 

 latas, medio in verrucam hemisphaericam aut conoideam elevatas, for- 

 mantia. Perithecium fuligineum , dimidiatum , latere attenuato-producto 

 aut acutato. Nucleus depresso-hemisphaericus, albidus. Paraphyses ra- 

 moso-connexae. Asci subcylindrici. Sporae 8: nae, distichae aut sub- 

 distichae, decolores, ovoideo-oblongae aut oblongae, apicibus obtusis aut 

 rotundatis, 1-septatae, septo fere in medio, long. 0,014 — 0,027, crass. 

 0,006—0,008 mm. 



Apothecia nigra, strato tenuissimo substrati, tantum sub microscopio 

 viso, obducta. Perithecium fuligineum, basi deficiens patensque, at in 

 centre columella rudimentaria verrucaeformi instructum. Paraphyses sat 

 numerosae. Asci long. circ. 0,090 mm., crass, circ. 0,012 — 0,014 mm. 

 Sporae membrana modice incrassata, halone tenui interdum indutae, medio 

 baud aut parum constrictae. 



Ad corticem Carapae ohovatae in insula Koh Saket (no. XXXVIII). 

 Area: In reglonibus tropicis Americae, Oceaniae, Asiae et Africae crescit. 



