Pilocarpon. 89 



Atl lioc genus inter Lecideam et Chiodecton (sect. Byss ocar- 

 pon Wainio! intermedium. pertiuent P. leucoUepharum (Nyl.), P. tricholoma 

 (Mont.) et aftinia. 



\. ?. leucoblepharum (Nyl) Wainio. Lecidea leucohlephara 

 Xyl., Ennm, G-en. Lich. Suppi. (1857) p, 337, Lich. Nov.-Grau. ed. 

 2 (1863) p. 337; Stizenb., Lec. Sabul. (1867) p. 68; Nyl., Enum. 

 Lich. Husn. (1869) p. 15. Fatellaria Mull. Arg., Lich. Beitr. (Fl. 

 1881) n. 277, Lich. EpiphylL (1890) p. 9. 



Tiiallus cTustaceus, tenuis, leviter inaequalis, dispersus, con- 

 tinuus aut areolatus subareolatusve, albidus aut virescens [,,aut 

 olivaceo-cinerascens obscuriorve"]. Apotliecia prinio thailo sub- 

 inimersa, demuni emergentia adpressaque, 0,6 0,2 5 millim. lata,, 

 disco plano planiusculove aut raro demum convexiusculo, nigro 

 aut fusco-nigro, nudo, margine tenui, tomentoso, albido, plus mi- 

 nusve distincto. Hijjjotliecium subviolaceo- aut fuscescenti-nigri- 

 cans, Epithecium decoloratum aut caeruleo-nigricans [,,aut vire- 

 scens"]. Sporae 8:nae, oblongae aut oblongo-fusiformes aut ovoi- 

 deo-oblongae, rectae aut pro parte leviter curvatae obliquaeve, 

 3-septatae, long. 0,oi8 0,oi2 [,,0,oio''], crass. 0,oo4 0,oo25 

 [,, 5"] millim. 



Ad folia perennia arborum ad Lafayette (1000 metr. s. m.), 

 n. 365 et in Carassa (1400 metr. s. m.), n. 1221, in civ. Mina- 

 rum. Thallus strato corticali destitutus, liyphis 0,oo2 minim. 

 crassis, leptodermaticis, increbre septatis, interdum hypothallo ni- 

 gro limitatus. Gonidia protococcoidea, globosa, simplicia, diam. 

 0,010 0,0 8 milHm. Hypotheciiim obscuratum, tenue, ex hyphis 

 conglutinatis formatum, ceterum excipulum albidum et ex hyphis 

 constans O.oos millim. crassis, sat leptodermaticis, increbre sep- 

 tatis, laxissime contextis. Hymenium circ. 0,0 6 O,0 6 5 millim. 

 crassum, arcte cohaerens, jodo intense caerulescens, dein obscure 

 vinose rubens. Paraphyses parcae, vix 0,ooi miUim. crassae, 

 apice parum incrassatae, parce ramoso-connexae, haud constric- 

 tae. Asci clavati, circ. 0,oi2 0,oi4 minim. crassi. Sporae di- 

 stichae, halone nullo, apicibus obtusis aut rotundatis. 



Pycnoconidia esse ,,Iageniformia, long. 0,oo4 0,oo5, crass. O.002 mil 

 lim., apice subgloboso-incrassato crassiore" a Xyl. in Enum. Lich, Husnot p. 

 15 indicatur. Talia etiam in speciminibus Brasilianis observavi, at ad fun- 

 gillum parasitautem pertinent, nam conceptacula eorum hyphas nigri- 

 cantes, ab hyphis P, leucohlephari differentes emittunt, et parasita eadem 

 ceterum etiam in partibus proximis Leccmorae hymenocarpae Wainio crescit. 



