' JS_-* 



r:. 



J--*-"-xV4' 



*«* 



kW 





^ 



W^f^i: , 



^ri 



. 1 



» 





333 



i 



|| J 



tenuissimus, cortice flavescente mox secedente partim denuda- 

 tus, continuus, laevis; apothecia in arbore horizontaliter traus- 



versim oblongata, circ. 



6—8 

 10 



mm. longa et triente et ultra minus 



lata, caeterum late pjramidalia, depressa, basi circumcirca late 

 deplanato-dilatata, umbone apice minute umbilicataj pro majore 

 parte v. saltern inferiore thallino-velata; perithecium dimidiatum, 

 basi valde patens efc in sectione simul utrinque sub nucleo 

 breviter inflexum; paraphyses connexae; sporae in aacis obo- 

 Yoideis latiuscuiis subglomeratim 8-nae, mox fuscae, 14—18 ^ 

 longae, 7—8 ^ latae, aequaliter 2-loculares, utrinque late rotun- 

 dato-obtusae et medio vix constrictae. — Affinis M* hetuUnae 

 Lahm, sed sporae parvae ut in dissimili et microcarpica M. 

 aiomaria Koerb. — Ad corticem Beiulae albae prope New Bed- 

 ford, Amer. sept., ubi legit mihique bencFOle comm. cl. H. 

 Willey, 



888. Microthelia confluens Miill, Arg.; thallus cum 

 cortice maculam rufescenti-pallidam formans; apothecia subse- 

 riatim confluentia et discreta. ^^ mm. lata^ depresso-subpyra- 

 midalia, medio late umbonata^ umbo conico-hemisphaericus 

 tantum nudus, niger^ summo apice minute umbilicatus, pars 

 reliqua apotheciorum thallino-velata^ nigro-griseaj perithecium 

 dimidiatum, basi dilatatumj nucleus basi planus; sporae in 

 ascis 2-seriales3 mox fuscae, oblongo-obovoideae, 18 — 20 ^u Ion- 

 gae, 7 |JL latae, articulus inferior superiori aequilongo angustior 

 basique acutiusculus. — Apothecia majuscula ut in subaffini 

 M. ihelena^ saepius geminatim v. ternatim in series confluentia, 

 sed tantum partes basilares dilatato-conflimnt, umbones inter 

 se disoreti sunt — Corfcicola ad Caput Bonae Spei (ex hb. 

 Hamp.), 



889. Microthelia holopolia Miill. Arg.; Verrucaria ho- 

 lopoUa Nyl. Syn. Lich. Nov. Caledon. p. 92 (ex specim. Deplan- 

 cheanoj, apotheciis obtectis, sub protuberantiis thallinis levibus 

 sitis, integre nigris, altioribus quam latis et dein sporis magnis, 

 circ, 60 — 70 ^ longis in genere valde distincta est. — In Nova 

 Caledonia (specim. VieilJ, & Deplanch.). 



890. Genus Pyrenula facile in sectiones 3 sequentes di- 

 videndum: 



1. Pseudacrocordia^ sporae ambitu eilipsoideae, 



2-locuIares. — 



Arg. 



Hie pertinet P. brachysperma MUll. 



2. Eupyrenula; sporae brevius longiusve ellipsoideae, 



