( 40 ) 161 



undulatum, crassum, nigro-fuscum ; hypothecia hyalina; asci 

 e globoso obovoidei, apice valde pachydermei, 8-spori; sporae 

 hyalinae, 2-4-locuIares, 14-18/ji longae et 4 i/s-S i/s/a latae. — 

 Apothecia subsimilia sunt iis M. Arthoniellae Mull. Arg., sed 

 thallus alius, apolhecia subtilius verrucoso-gibbosa et sporae 

 demuin 4-locuIares. Sub oculis nudis Arthopyreniam puncti- 

 formem Mass. simulat. — Corticole : Boruca (Pitt. n°6119). 



211. MycoporopsislencoplacaMiill.Arg. Lich. Beitr., 



n* 1056. — Corticole : Boruca (Pitt, n« 6116). 



212. — tantilla Miill. Arg. (sp. nov.). — Thallus albus, maculiformi- 



tenuis, laevis, subevanescens; apothecia lo/ioo-is/ioo mm. 

 tanlum lata, suborbicularia et alte convexa aut oblongata, 

 recta v. incurva, obtuse angulosa, undulato-gibbosa, nigra et 

 nuda, mono-oligocarpica ; peridium crassum, nigro-fuscum; 

 hypothecia hyaiina ; asci novelli fere globosi, dein oblongati, 

 inferne ventricosi, 8-spori ; sporae fuscae, 18-16/* longae, 

 5-6/A latae, oblongato-obovoideae, medio paullo conslrictae, 

 2-4-locularcs. — Minutie apolheciorum prima fronte spermo- 

 gonia simulat, nee non Mycoporeilo sparsello Miill. Arg. 

 (Lindgii n" 62) simile est sed raulto gracilius, Structura 

 apolheciorum omnino ut in majore Mycoporeilo tetramero. — 

 Corticole : Terraba (Pitt, no 6118). 



213. — roseola Miill. Arg. (sp. nov.) — Thallus subroseus, maculi- 



lormi-tenuis, demum subevanescens ; apothecia i/io-i/i mm. 

 lata, mono-oligocarpica, orbicularia et late breviloba, nano- 

 eonvexa, obtuse gibbosa, nonnihil thallino-velata, nigra; 

 peridium subrufo-v. violaceo-nigrum, crassum; hypotheciura 

 hyalinumj laminae in seclione superne distinctae, inferne 

 confluenles; asci globoso oblongati, inferne ventricosi, superne 

 pachydermei, 8-spori: sporae 13-18//. longae, 4 i/2-6/jt latae, 

 cylindrico-obovoideae, 4-6-loculares; loculus pcnullimus reli- 

 quis paullo longior. — Apothecia subsimilia iis Mycoporelli 

 tetrameri, sed minora, saepe raonocarpica et peridium et sporae 

 alia. A Mycoporopti tanlilla recedit colore thalli, apotheciis 

 subplanis et sporis (demum fuscis) magis divisis. — Corticole : 

 Boruca (Pitt, n" 6117). 



