— 122 — 



Bidr. Syd. Tav. Fl. (1870), p. 191. Biatora premnea Sommerf., Gent. 

 PI. Crypt. Norv. (1826), no. 238 (no. 19094 in herb. Nyl.). 



Thallus tenuis aut sat tenuis, subcontinuus aut rimulosus, sat laevi- 

 gatus, glaucescenti-cinereus , esorediatus, hypothallo nigricante partim 

 limitatus. Apothecia solitaria, elevata, orbicularia, diam. 0,8— 0,-5 mm., 

 adpressa, basi constricta, lecideina, margine crassitudine mediocri, leviter 

 aut parum discum superante, subintegro aut paululum radiatim fisso, tereti- 

 rotundato, nigro, nudo. Perithecium fuligineum, integrum. Discus apertus, 

 planiusculus aut demum etiam convexiusculus, tenuiter flavescenti- vel 

 aeruginoso-pruinosus aut denudatus. Sporae 8 : nae, distichae, decolores, 

 fusiformes, apicibus obtusis, 3-septatae, long. 0,015— 0,016, crass. 0,005 mm. 



Hymenium circ. 0,080—0,090 mm. crassum. Perithecium, hypothe- 

 cium et epithecium fusco-fuligineum. Asci clavati, long. circ. 0,0(50, crass. 

 0,010 mm., membrana baud incrassata. Sporae halone nullo indutae. — 

 Commixta cum Lecanactide premnea (Ach.) Wain. (Lecidea premnea 

 Nyl., Lich. Scand., p. 241, Lich. Jap., p. 76, Lich. Paris, p. 94; Leight., 

 Lich. Great Brit., 3 ed., p. 364), quae sporis 5- et 4-septatis maioribusque 

 ab ea differt. Nomine ^Lecideae premneae'^ in herb. Ach. adest speci- 

 men in Anglia ab Afzelio lectum, apotheciis nudis, margine radiatim 

 diffracto instructis, ad Lecanactidem premneam pertinens, et alia specimina 

 ad varias species pertinentia. „Var. taxicola'^ Ach. (Lich. Univ., p. 670) 

 apotheciis flavescenti-pruinosis et sporis 5-septatis instructa est (secund. 

 herb. Ach.). Var. deminuens Nyl., Syn. Lich. Nov. Gal. (1868), p. 54, 

 secund. specim. orig. in herb. Nyl. apotheciis nudis et sporis „3-septatis, 

 long. 0,016 — 0,018, crass. 0,0035— 0,0045 mm." instructa est, in Fl. 1867, 

 p. 373, et in Norrl., 1. c, secund. specimen no. 10790 in herb. Nyl. 

 apothecia habet partim nuda, at nonnulla tenuiter flavido-pruinosa, ,sporas 

 3-septatas''. B. premnea Sommerf., 1. c. no. 238, secundum specimen 

 no. 19094 in herb. Nyl. apotheciis nudis, „ sporis long. 0,015—0,020, 

 crass. 0,003—0,004 mm., 1 — S-septatis" instructa est. Lecanactis chloro- 

 conia Tuck., Obs. Lich. (Proceed. Am. Ac. of Arts and Scienc. 1864, 

 vol. VI), p. 285 (L. premnea v. chloroconia Tuck., Gen. Lich., 1872, 

 p. 194, Syn. North Am. II, 1888, p. 115; Lecidea chloroconia Nyl. & 

 Gromb., On Gollect. Lich. East As., 1882, p. 56, Nyl., Sert. Lich. Lab., 

 1891, p. 22), secundum specimen Nylanderianum in Malacca lectum apo- 

 theciis bene flavido-pruinosis a L. deminuente (Nyl.) leviter differt. 



Ad corticem Arecae catechu prope Stationem navalem in insula Koh 

 Ghang (no. XVII). 



Area: In Europa, Asia et Oceania observata, at distributione defecte 

 cognita. 



B. Hysterieae. 

 Trib. 1. Graphideae. 

 1. Graphis (Adans.) Nyl. 



Subg. I. Phaeographina (Miill.) Wain. 

 42. Gr. (sect. Epiloina) subrigida Nyl. in Gromb., On Gollect. Lich. 

 East As. (Journ. of Bot. 1882), p. 58; Hue, Lich. Exot. (1892), p. 236, 

 320. Lecanactis Nyl., Sert. Lich. Lab. (1891), p. 24. 



