Splijeriacefe, Phseosporse, Xjiaria. 309 



XYLARIA Hill. Hist. Plant. (1773), p. 62 et 63, Fr., Nits. etc. (Etyra. 

 xylon, lignum, quia fungus lignosus). — • Stroraa erectura, teres, 

 clavatura \. subglobosum, saepius stipitatum, tuberosura v. coria- 

 ceura ; perithecia stroraate iraraersa v. adnata, carbonacea, papil- 

 lata; asci teretiusculi, typice octospori. Sporidia ovoidea v. sub- 

 navicularia, continua, fuliginea. Conidia ssepissirae stromatis sum- 

 mitatem occupantia, laeticoloria. — Genus vastissiraum ; species 

 europeae paucae, tropicffi raulto copiosiores. 



Seet. I. Xyloglossa Fr. N. Symb. 124: clava undique fertili, stipite glabro. 

 A) Basis stipitis subfequalis. 



1. Xylaria polymorpha (Pers.) Grev. Flor. Edin. p. 35, Nits. Pyr. 1150 

 Germ. p. 17, Sph. polymorpha Pers. Comra. p. 17. — Stroraa- 

 tibus 2-6. rarius pluribus basi in caespites connatis, rarissime so- 

 litariis, erectis, crassis, glabris, ex argillaceo-fusco nigricantibus, • 

 nunc simplicibus ac teretibus, basi apiceque plus rainus attenuatis • 

 v. obtusissirais, subcylindricis, nunc obovatis, corapressis, eraargi- 

 natis V. furcato-raraosis, nunc denique subglobosis; clavula peri- 

 thecigera, excepto stipite brevissimo v. subiiuUo, stroma integrum 

 formante, peritheciis prominulis rugulosa; hymenio conidifero feru- 

 ginoso-cinereo ; conidiis obovato-subglobosis, minutissirais ; perithe- 

 ciis majusculis, densissime stipatis, ovatis v. subglobosis, ostiolis 

 papillseformibus; ascis C3''lindricis, longissime pedicellatis, octospo- 

 ris, 140-180:^8-10 p. sporif. ; sporidiis monostichis, subfusifor- 

 raibus V. fere ovatis, utrinque acutiusculis, rarius obtusis, inaequi- 

 lateralibus, iramo curvulis, fuscis, 20-32 s; 5-9. 



Var. y) acrodactyla Nits. 1. c. Stromate elongato-fusiformi v. 

 e basi incrassata apicem versus sensira attenuato, tereti, forma 

 regulari ; csespitosa; sporidiis 20-24 t; 6-7. 



Var. jS) pisiillaris Nits. 1. c. Stromate cvlindrico, apice rotun- 

 dato, obtusissirao, in stipitem brevissimum v. subnullum plerumque 

 sensim attenuato, forma regulari ; Ccnespitosa; sporidiis 24-28^8. 



Var. y) Menizeliana Tul. Sel. Fung. Carp. II, p. 9. Clavula 

 subcylindrica, crassissima, apice obtusissima, in stipitem brevera 

 subito attenuata, plus rainus deforrai; csespitosa; sporidiis 24-32 ^; 8. 



Var, 6) spathulaia Pers. Obs. rayc. II, p. 64, t. 11, f. 2. Stro- 

 raate corapresso, obovato, apice obtusissimo, emarginato v. furca- 

 to, imrao raraoso, clavulas 2-3 gerente, in stipitera nunc brevis- 

 simura nunc elongatura sensira attenuato, deformi ; caespitosa v. soli- 

 taria; sporidiis 24-28^8-9. 



