PYXINE (Fn.) Nyl. 



Énum. lich. pag. 108: Syn. lich. II, pag. 1. 

 Fries, Syst. orb. veg. I, pag. 267. — Waimo, Étnd. Brés. I, pag. 152. 



Tliallus heteromericus, foliaceus, physciseformis, laciniatns, 

 laciniis sublinearibus. vulgo circ. 1 mm. latis, miiltifidis, rhi- 

 zinis vulgo obscuratis substrato + arcte affixi.s. Stratum 

 corticale superius parencbymaticum, ex hyphis verticalibus, 

 creberrime septatis, arcte conglutinatis formatum. Stratum 

 gonidiale vulgo a strato medullari bene di.stinctum, vulgo 

 tenue, ex byphis leptoderraaticis, implexis v. p. p. majore sub- 

 verticalibus, ssepissime + iucrassatis et sat crebre septatis 

 contextum, gonidia protococcoidea prtesertim in parte supe- 

 riore fovens. Stratum medullare crassum, ex hyphis tenui- 

 bus, leptodermaticis, vulgo p. p. magua majoreve longitudi- 

 nalibus, ± arcte contextis coustructum. Stratum corticale 

 inferius baud bene evolutum. vulgo baud continuum, liypbis 

 longitudinalibus, sat paebydermaticis, obscuratis. 



Apothecia babitu lecideino, vulgo jam juvenilia tota atra, 

 adnata v. subadpressa, disco nudo v. raro pruinoso, vulgo 

 persistenter piano, margine vulgo persistente. Pars margi- 

 nalis excipuli ex bypbis irregulariter radiantibus, ramosis, iu- 

 crassatis, sat crebre — crebre septatis constructa, e duobus 

 formata stratis sat distinctis: strato medullari (= strato 

 gonidiali tballi) bypbis minus arcte contextis aerigero, vulgo 

 nulla gonidia fovente; strato corticali (= strato corticali sup. 

 tballi) bypbis arcte conglutinatis parencbymatico. Tbecii 

 pars superior KOH violascens. Parapliyses graciles, simplices, 

 v. subsimplices, ± arcte cohserentes. Sporse Sniffi, sat angustffi, 

 fuscee, dyblastse v. tetrablastcC, loculis pro rata sat parvis. 

 Hypotbecium + obscuratum. 



Pycnoconidang-ia (spermog-onia), (juantum cognita, irregula- 

 riter lageniformia, thallo imniersa, ostiolo obscurato. Pycno- 

 conidia (spermatia) minima, recta, cylindrica v. apicibus in- 



