— 106 — 



In P. urceolata v. nuda Mull. Arg., Lich. Beitr. (Fl. 1880), no. 183, 

 secund. specim. orig. ad Petropolin in Brasilia lectum thallus margine 

 sorediosus, superne rimulosus, subtus ambitum versus late nudus, centrum 

 versus rhizinis brevibus crebris instructus, KHO superne flavescens, intus 

 primo lutescens, dein rubescens. — In P. urceolata v. subcetrata Miill. 

 Arg., Lich. Beitr. (Fl. 1883), no. 569, secund. specim. orig. ad Tvi'ofold 

 Bay ab Hartmann lectum thallus subtus usque ad ambitum rhizinis in- 

 structus, KHO superne lutescens, intus primo lutescens, dein rubescens, 

 superne rimulosus , lacinulis sorediosis. Ad P. cetratam Ach. pertinet, 

 at thallo subtus partim albido, partim nigricante a f. sorediifera Wain., 

 Etud. Lich. Bres. I (1890), p. 40, differt. In P. urceolata v. cladonioide 

 Miill. Arg., Lich. Beitr., no. 183, secund. specim. orig. no. 35 ad Petro- 

 polin a Deventer lectum thallus sorediis isidisque destitutus, passim mar- 

 gine ciliato , ceterum subtus late nudus albidusque aut partim interdum 

 nigricans, lobis bene lacinulatis et partim etiam rotundatis, KHO superne 

 flavescens, intus non reagens, GaCl^Oa neque solo, nee KHO addito, intus 

 reagens. Apothecia ciliis destituta. Observante eel. Zahlbr., Stud. Bras. 

 Flecht. (Sitzungsber. K. Ak. Wiss. Wien 1902), p. 423, thallus KHO 

 intus primo lutescens, dein rubescens. Non annotavi, anne alia species 

 specimini originali immixta sit, at secundum Miill. Arg. crescit cum var. 

 nuda, cujus reactio talis est, qualis a eel. Zahlbr. describitur. Ceterum 

 reactio false observalur , nisi penna, quacum solutio reagens ad thalium 

 applicatur, exacte perpurgata est. 



5. P. adspersa Wain., Lich. Nov. Rar. IV (Hedwigia 1907), p. 168. 



Thallus superne albidus vel glaucescenti-albidus, subtus niger et am- 

 bitum versus castaneus vel testaceo-pallescens, laciniis circ. 15 — 3 mm. 

 latis, irregulariter lobatis, lobis apice rotundatis, integris aut rarius rotun- 

 dato-crenatis, aut minutissime isidioideo-denticulatis, apicibus marginibusque 

 laciniarum plus minusve recurvo-adscendenlibus aut adpressis, eciliatus, 

 esorediatus, praesertim medium versus isidiosus, isidiis tenuissimis brevis- 

 simisque, medulla alba, subtus rhizinis brevibus passim instructus, ambi- 

 tum versus late nudus, KHO superne et intus lutescens, GaClgOg non 

 reagens, at his reagentiis unitis intus rubescens. Habitu similis est P. 

 coralloideae (Mey. & Flot.) Wain. (P. tmctorum Despr.), at reactionibus 

 ab ea differens et tantum sterilis lecta. 



Ad corticem Rhizophorae prope Lem Ngob (no. XV et XXXI V). 



6. P. platypbyllina Wain., 1. c. 



Thallus superne albidus aut albido-glaucescens, intus albus, subtus 

 niger aut ambitu interdum castaneus, laciniis circ. 20 — 5 mm. latis, ad- 

 pressis, irregulariter lobatis, lobis rotundatis, basi vulgo angustatis, ad- 

 pressis, esorediatus, isidiis destitutus, eciliatus, cortice continuo, subtus 

 rhizinis brevibus passim instructus, ad ambitum late nudus, KHO superne 

 et intus lutescens, addito CaCUOo intus rubescens, GaClgOg solo non 

 reagens. Apothecia circ. 7—3 mm. lata, applanato-cupuliformia aut pr. p. 

 applanata, imperforata, peltata, sessilia, disco rufo aut testaceo-rufescente, 

 margine subintegro aut interdum leviter crenulato, vulgo leviter incurvo, 

 eciliato, excipulo extus laevigato. Sporae 8:nae, distichae, ellipsoideae 



