EDV. A. WAIiMO. REACTIONES LICHENUM J. MULI.ERI ARGOVIENSIS. 6 



Ca CI2 O2 solo non reagens, at addito K H intus rubescens, ambitus subtus late 

 nudus. 



P. albata Müll. Arg., Analecta Austr. (1896) p. 89. Thallus KHO superne 

 flavescens, intus lutescens, Ca CI2 O2 solo liaud reagens, at addito KHO leviter 

 rubescens, subtus fere usque ad marginem rhizinis instructus. 



P. nitens Müll. Arg., Lieh. Usambar. (1894) p. 255. Thallus K H superne 

 flavescens, intus non reagens, Ca CI2 O2 intus rubescens, subtus ad ambitum late 

 nudus, superne colore sicut in P. Brasiliana Nyl., isidiis destitutus. 



P. îsidiosa Müll. Arg., 1. c. Reactionibus, colore et habitu similis P. nüenti, 

 at thallo centrura versus isidioso. Autonoma est species. 



P. perlata var. subrevoluta Müll. Arg., 1. c. (1880) n. 185, affinis est 

 P. quercince (P. tiliacece Nyl.). Thallus isidiosus, subtus usque ad ambitum rhi- 

 zinis instructus, KHO superne flavescens, intus non reagens, Ca CI2 O2 non 

 reagens. 



P. proboscidea Tayl. var. aspera Müll. Arg., 1. c. (1886) n. 1014. Thallus 

 superne isidiosus, margine parce ciliatus, sat latus, lobis rotundatis, subtus late 

 nudis, KHO superne leviter subflavescens, intus non reagens, Ca CI2 O2 non 

 reagens. 



P. Braunsiana Müll. Arg., 1. c. (1881) n. 314. Thallus isidiosus, subtus ad 

 ambitum late nudus, KHO superne flavescens, intus non reagens, Ca CI2 O2 non 

 reagens. 



F. isidiosa Müll. Arg., 1. c, thallo solum abundantius isidioso a forma 

 typica Müll er i differt. 



P. chlorina Müll. Arg., I. c. (1880) n. 189. Thallus subtus fere usque ad mar- 

 ginen rhizinis instructus, medulla flava, KHO superne non reagens, intus 

 lutescens. 



P. leucoxantha Müll. Arg., 1. c. (1881) n. 241. Thallus albido-stramineus 

 vel glauco-stramineus, medio praesertimque margine sorediosus, margine parcis- 

 sime ciliatus, subtus ad ambitum nudus, ceterum parce rhizinis instructus, forma 

 loborum sicut in P. tiliacea, KHO intus lutescens et demum rubescens, CaCl202 

 non reagens. 



P. Brisbanensis Slirt., Queensl. p. 4. Thallus superne glaucescens, isidiosus, 

 medulla flava, subtus ad ambitum late nudus, KHO superne flavescens, intus non 

 reagens. « Spora3 long. 0,008-0,010, crass. 0,005-0,006 //., ceterum sicut P. sul- 

 phurata » ex Müll, in sched. 



P. Somaliensis Müll. Arg., Lieh. Beitr. (1885) n. 934. Apothecia cupuli- 

 formia. Iiaud perlorata, disco rufofusco. Thallus intus albus, subtus ad ambitum 

 late nudus, adpressus et minor, quam in P. perlata, KHO superne flavescens, 

 intus lutescens. (^a (^h O2 non reagens. 



P. üleana Müll. Arg., Lieh. Beitr. (1889; n. 1500. Thallus superne strami- 

 neo-glaucescens, esoredialus, isidiis destitutus, intus stramineus, apicibus laci- 

 nianiin rotundatis, K II superne et intus lutescens, Ca CI2 O2 intus levissime 



