L1CHENES EX0T1CI. 261 



3. Gr. conteœta (Pers;), et simul var. reducta Nyl. apotheciis minus 



prominulis, facie fere ut in Graphide (Fissurina) nitida, 



h. Gr. heterospora Nyl. — Thallus dilule glauco -cinerascens vel 

 glauco-albicans obducens, absque nitore, continuus, crassitiei mediocris 

 (0,3 millim.), maculas albas ofterens locis ubi innata surit apotliccia 

 immersa parva radiatim ramosa concolora, fissura laterali et epitheciali 

 indieata, sectione linea epithecii nigricante, dein alba ; sporœ 8 nte globoso- 

 ellipsoideœfuscœ, septo transverso etadbuc aliolongiludinalialterum versus 

 apicem vel versus utrumque, long. 0,009-0,010, crass. 0,007-8 millim., 

 paraphyses médiocres. Nec gelatina hymenea, nec sporae iodo tinctœ. • — Ad 

 arbores emortuas in sylvishumidis Insulae Borbonice, ex coll. Leperv.-Méz. 

 n L ' /io. — Spora3 fere ut in Thelotremate Prevostiano (Mnt.), sed mino- 

 res. Spermogonia flavido-pallida prominula, spermatia recta cylindrica, 

 long. 0,008-9, crass. vix 0,001 millim. Pertinet ad Fissurinas polius 

 quamad stirpes alias Graphidis, sed sistit speciem valde peculiarem. 



îilypUÎH Ach, 



1. Gl. labyrinthica Acb. 



2. GL cicatricosa Ach. — Ad cortices cum preecedenle. 



Chiodccfoii Ach. 



1. Ch. nigro-cinctum Mnt.— Supra terram humosam radicibus filicum 

 intertextam, ex coll. Leperv.-Méz. n° 120.— Affine Cbiodecto farinaceo 

 Fée, at apotheciis exlus punctiformibus, hypothecio tenuiore, etc. 



VciTiicai'ia Ach., Nyl. 



1. V. innata Nyl. Pyrenoc. p. 39. — Coll. Leperv.-Méz. — -Pertinet 

 ad slirpem Porinarum, ditï'ertque ab aliis affînibus facie laevigatiore. 



2. F. oor&omca Nyl. Pyrenoc. p. /|2. — Coll. Leperv.-Méz. n° hl . 



3. V. aspistea Fée., Nyl. Pyrenoc, p. Z|3. — Ad cortices. 



h. V. mamillana Ach. (Y. marginata Hook., Nyl. Pyrenoc, p. /|5). 

 — Coll. Leperv.-Méz. n° /i7.(Etiamin Madagascar.) 



5. F. nitida Schrad. et var. nitidella Flk. — Ad cortices. 



6. F. denudata Nyl. Pyrenoc. p. 49. — Ad cortices. 



7. F. gemmata Ach. — In Insula Borbonia, ex hb. Boryano. 



(1) Supra, p. 212, legendum est pro Alectoria divergente : A. Loxensis Fée 

 (thecis monosporis, sporis murali-divisis). 



