— 18 — 
cens, epidermide varie perfossa erumpens, discoideo-pulvi- 
natum, 1-2 millim. diametro æquans, atrum, læve, in sicco 
verlice depressum, subpezizoideum vel dothide@-forme, cor- 
. neum, humectum turgescens, convexum, carnosulum, intus 
pallens, tolum fere sporophoris elongatis ramosis densissi- 
mis, in massam subgelatinosam coalescentibus constans. Sporo- 
phora tenuia, filiformia, byalina, continua, elongata, basi ana- 
stomosantia, superne subdichotome ramosa, fastigiata, ad unum- 
quemque rami apicem sporam gignentia. Sporæ juniores ob- 
verse pyriformes, 2-loculares, perfect oblongo-fusoide, vel 
oblongato- clavate, plerumque S-loculares, loculis simplicäbus, 
subrotundatis, ad dissepimenta nonnihil contracta, pallide livido- 
fuliginex, diaphanæ; liberate, polo inferiore vel utroque obtu- 
siusculo, submammoso, diaphano. 
Valsaria Ces. et DNtrs. V. dolosa (Sphæria dolosa Fr. 
Syst.) Pyrenia acervulata, 2. 3. 5. raro plura in unoquoque acer- 
vulo et eireinnantia. Acervula in corlice dispersa, parum pro- 
minentia, nisi disco stromatico pallescente, cum ostiolis obtusis 
atris, epidermidem perforante, conspieua. Pyrenia forma varia, 
e basi applanata, sphæroideo-lenticularia, sphæroidea, conoideave, 
parietibus orassiusculis instructa, flaccida, fuscoatra, cellulis 
grandiusculis, rotundatis, reticulantibus contexta, vertice in 
collum crassum breve, sœpe excentricum contracta. Colla 
pyreniorum convergentia apice obluso hianlia, cum elypeo stro- 
matico pallescente, subsuberoso epidermidem perfossam ‚* disci 
rotundati ad instar, vix excedentia. Nucleus conglobatus, 
pyreniis fractis in massam adspectu subpulveraceam dilute fuli- 
gineam secedens. Asci innumeri, coacervali, elongati, 8-spori, 
parietibus tenuissimis instructa. Paraphyses nulle. Sporidia 
lineari-oblongata, polis obtusis, nucleo pallescente, transverse 
ad medium 2-partito fœta. °/20o millim. longitud. metientia. 
An Zweigen von Alnus. 
V. Tiliae Ces. DNtris. Pyrenia ovoidea, sphæ- 
roideo-depressa, vel oblique ovoidea depressa, in collum 
crassum producta, quaterno sæpius numero fasciculata et 
cortiei insculpta, simulque apice eorundem ut plurimum 
cuneato, epidermidem perforantia, atque in cubilium 
superlicie, tubercula A-radiala, pyramidata, atra, ostioli stellati 
ad instar mentientia. Pyrenia cœterum atra, crassiuscula, apice 
cuneato, aut subinde papillato, submucronulato, nullo osculo 
evidenti hiantia, neque conceptaculo ullo stromatico limitata, 
nucleo pallescente farcta. Ascı grandes, crasse clavati, pachy- 
pleuri, perfecte hyalini, juniores nucleo angusto, lutescente 
foeti. Paraphyses filiformes, longe, flaccidæ, guttulifere. 
Sporidia in unoquoque asco 1, 2, 4, 6, octona numquam visa, 
grandia, oblonga, 2-locularia, vix nisi juniora ad dissepimentum 
