= u — 
8 
depresso fuscescente demum denudata, clerum epidermide 
immutala arcte tecta, ambitu nigrescentia, vix cruslaceo-corli- 
cata, intus pyrenia inter pallescentia et superiori præsertim 
parte submeduliosa. Pyrenia majuscula, in unognoque con- 
ceptaculo 3—6, vix plura, sphæroidea, fuscescentia, vertice in 
collum breve apice in disco conceptaculi emergens tenuala, 
cellulis obscuris fuscis contexta, tota interiore superficie ascigera, 
in sicco haud collabescenlia. Ostiola discreta, parum prominula, 
subradiato-stellata. Asci innumeri, e basi longe attanuata, fili 
formi, elongato-clavati, polyspori, ex sporidiis fuscescentes et 
veluti nucleo grumoso farcli. Paraphyses tenuissime, ægre 
conspicuæ. Sporidia spermatioidea, perexigua. eylindracea, 
dilutissime fuscidula, agilia, vix %/s00 millim. longitudine zquanlia. 
Diatrypella Rousselii Cesat. et Nirs Schem. sferiac. 27. 
Conceptacula verrucæformia convexo-pulvinata, vertice emer- 
genlia, cœterum epidermidis laciniis, varie fisse, arcte eineta, 
toto ambitu crustaceo-corlicata, atra, carbonacea, fragilia, disco 
rimulosa, intus, superiori parte præsertim, sub strato nempe 
carbonaceo subcarnosa, fusco-pallescentia. Pyrenia majuscula, 
contigua, vel sæpius conceptaculi dissepimentis distincta, spb#- 
roidea, obtuse prismalica, obovata, varia e mutua pressione et 
numero, plerumque monosticha, superficie ſuscescentia; pariel- 
bus erassiusculis, cellulis rotundatis, turgidis contexta, verlice 
in collum tenue, cum parte supera conceptaculi concrescens 
angustata. Ostiola obtusa, atra, in rimis corticis conceptac 
emergenlia, discreta, vel 2, 3 contigua et substellata. Nucleus 
pallescens, fluxilis. Asci copiosissimi e basi, tenuata elongala 
subtereles, polyspori, dilute fuliginei, latice mucoso affalim 
obvallati. Membrana eorundem pertenuis, sporidiis ma ure- 
scentibus nisi ascorum apice conspieua. Paraphyses flarcidæ, 
rare ex ascis s erilescentibus Sporidia teretiuscula, valde ur- 
vala, fere hyppocrepidea, dilutissime fuliginea ! 100 millim. longi- 
tudine vix æquantia. Valea cervieulata Fries Summ. Valsa 
sorbi Fries dumm Valea prunastri Fries Summ. Falsa 
nivea Fries. Valsa Massariana. Pyrenia in quodvis con- 
erptaculo 3—6 raro plura, sphaeroidea, conoidea, lenticularla, 
varia, pro numero et mutua pressione, erassiuscula, alfa, cel- 
lulis grandiuseulis eontexta, in collum crassum apice pervium 
producta. Ostiola, apex nempe pyreniorum, tubereuliformia, 
obtusa, atra, poro latiusculo hiantia, in stromatis parte superior® 
atteuuata, angulato-emergente, fuscescente, protuberanlia, dis- 
crela. Stroma pyrenia obtegens, compactum, cinerascens, 
Conceplaculum concavum, depressum, crassum, coriacenm. 
atrum, Nucleus pallescens. Asci coacervati, crassiu: * 
clavati, nucleo lutescente farcti, rarissime perfect. rıdıa 
eylindroidea, leniter curvula, hyalina 2/00 millim: longitud. 
