420 Myxoiuycetete, Perichaenacefe, Perichaeiia. 



reticuhitim connexi, liberi vel parieti periJii ac^ati, raro leves, vulgo protu- 

 berantiis variis, aculeos, venas, verrucas, plicas vel taaniolas spirales sisten- 

 tibus ornati. Columelhi nulhx. In menibrana peridii sola subinde invenitur calx. 



ram. 1. fi^erieliseiiacea; Rost, 



Peridia memljrana simplici vel duplici exteriori stepe calcarea. Flocci ca- 1 

 pillitii leves, anastomosantes, parieti partis peridii superioris innati, saepe 

 obsoleti. 



PERICH/ENA Fries Symb. Gast p. 9, Syst. Orb. Veg. 1. p. 141, Rost. 

 Mon. p. 292, Cooke Mjc. p. 77, Schroet. Krypt. Fl. Schles. Pilze 

 p. 107 (Etym. iieri circum ct chaino rumpo). — Peridia discre- 

 ta, regiilaria vel difformia (plasraodiocarpa), circumscisso- vel la- 

 ciniato-dehiscentia. Flocci vel tubuli capillitio reticulatim juncti, 

 ramis aliis parieti peridii innatis, aliis liberis, subinde obsoleti, 

 leves. 



1. Perichaena depressa Lib. Pl. Ard. coll. fasc. IV, 378, Rost. Mou. 

 p. 292, Pat. Tab. An. Fung. p. 85, fig. 200, Schroet. Krypt. Fl. 

 Schles. Pilze p. 107, Cooke Myx. p. 77, Pernch. marginata Schw. 

 Am. n. 2310, Periahcena vaporaria Schw, Am. n. 2311, Siegasma 

 clepressiim Corda lc. V, f. 13. — Peridiis valde applanatis, gre- 

 gariis, stipatis, polygoniis, lateribus contiguis, rufo vel castaneo- 

 brunneis, nitidis, operculo truncato apertis, massa sporacea et ca- 

 pillitio luteis; capillitio valde evoluto, e tubis crassitudine variis 

 formato, 8-12 vel 25-33 y.. crassis; sporis globosis, levibus, 9-11 

 y.. diam. 



Hab. in corticibus putrescentibus in Germania, Britannia, Bo- 

 hemia, Belgio et Italia. 



2. I^erichaena corticalis (Batsch) Rost. Mon. pag. 293, Cooke My.\. 

 p. 73, f. 188, Schroet. Krypt. Fl. Schles. Pilze p. 107, Lycoperdon 

 corticale Batsch El. p. 155, Sphcerocarpus sessilis Bull. t. 417, 

 f. 5, Trichia gymnosperma Pers. Obs. VI, f. I ei2, Trichia cir- 

 cumscissa Schrad. pag. 19, Licea circumscissa Pers. Syn. Ui6, 

 Physarum luteo-album Schum. Saell. 1430, Tubulina circum- 

 scissa Poir. Ency. VIII, 5, Perichccna populina Fr. Gast. 12, Grev. 

 t. 252, Eng. Fl. v. 321, Cooke lldbk. n. 1192, Perichccna poim- 

 iina ,3. sorbea Weinm, iu Fr. Syst. Myc. III, p. 192, Perichcena 

 fjuercinx Fries Gast. p. 12, Trichia caria subrufescens Bong. 

 Herb., Licea c/uercina Wallr. Fl. Cry 2103, Licea Artocreas B. 

 et Rav. Fungi Car. II, p. 82, Perichcena Artocreas B. et Rav. 

 Grev. 187;'), u. 370. — Peridiis gregariis, sessilibus, hypothallo iii- 

 sidentibus, spha^roideis, depressis, circumscisso-dehiscentibus, e sor- 



