PYRENOCARPEiE QUEENSLAND L2E. 
455 
52. Microthelia brisbanensis, Mull. Arg. ; thallus testaceo-albus, 
tenuis si mu s, laevis ; apothecia circ. f mm. lata, nigra, juniora 
planiuscula, dein hemisphaerica et emersa, nuda, subopaca ; 
peritbecium basi subplanum, utrinque acute productum, sub 
nucleo valde attenuatum ; sporae inascis 2-seriatim 8-nae, circ. 
23-25 /x longae et 8-10 /x latae, demum nigro-fuscae, oblongo- 
oboYoideae, 2-loculares ; loculi aequilongi v. inferior (paullo 
angustior) leviter brevior. — A praecedente M. obovata ; recedit 
colore thalli, apotheciis majoribus et sporis magis aequaliter 
2-locularibus. — Corticola, Brisbane : Shirley, n. 1566. 
** Sporae, 4-loculares. 
53. Microthelia alba, Mull. Arg. ; thallus subvirenti-albus, tenuis- 
simus et laevis ; apothecia J-f mm. lata, juniora nanaet griseo- 
velata, demura impure nudato-nigra et alte hemispliaerica ; 
perithecium demum subglobosum, basi truncata innata con- 
nivens, sub nucleo deficiens aut tenuissimum ; paraphyses 
connexae ; sporae in ascis 2-seriatim 8-nae, 25-30 /x longae, 
9-10 /x latae, oblongo-ellipsoideae v. obovoideae, aequaliter 
2-4-loculares. — Habitu costaricensem M. inter cedent em, Miill. 
Arg. ; simulat, sed thallus aliter albidus et sporae subvalidiores 
masris divisae sunt. Sporis et apotheciis deiu minoribus a 
AT. queenslafidica differt. — Corticola, Queensland : Ch. Knight 
(sine nura.) 
54. Microthelia queenslandica, Mull. Arg. ; thallus tenuissimus 
et laevis, farinulentus et demum rarescentia cum epidermide 
fulvescens v. subtestaceus apparens; apothecia |-1 mm. lata, 
demum nudato-nigra, hemispliaerica ; perithecium basi sub- 
planum ibique in sectione verticali dilatatum, sub nucleo com- 
pletum sed tenuius ; sporae in ascis 2-scriatim 8-nae, oblongo- 
ellipsoideae, 40-48 /x longae et 14-17 /x latae, aequaliter 
(2-) 4-loculares. — Similis est M. dominant Miill. Arg., Pyren. 
Feean., p. 38 ; sed sporae omnino aliter divisae sunt. Est e 
maximis generis. — Corticola, Queensland, suis locis frequens ut 
videtur : Ch. Knight, n. 5, 29, 56 et plures alii. 
55. Microthelia subgregans, Miill. Arg. ; thallus albus, tenuis- 
simus, subfarmulentus et rarescens ; apothecia mm. lata, 
globosa, tantum circ. quarta parte superiore emergentia ibique 
nudato-nigra, rotuudato-obtusa, solitaria et saepe 2-5 gregatim 
dense approximata ; perithecium undique completum ; sporae 
in ascis 2-1-nae, 40-50 /x longae, 15-20 /x latae, oblongato- 
ellipsoideae, aequaliter 2-loculares v. loculi saepius extremitatem 
versus iterum transversim secti, unde loculi turn 4, quorum 
ultimi intermediis duobus multo minores. Species singularis, 
microcarpa, macrospora, ascis oligosporis. — Corticola, Queens- 
land: Ch. Knight, n. 3L5. 
56. Microthelia Siitrleyana, Miill. Arg. ; thallus maculam fuscam 
laevigatam efformans; apothecia mm. lata, sparsa, v. 2-3 — 
natirn confluentia, nigra, dimidia parte et ultra immersa, nano- 
hemisphaerica v. subiude conico-hemisphaeriea, obsolete thallino 
velata, medio circumcirca auguloso-dilatata, subtus completa et 
basi rnodice convexa ; sporae in ascis biseriatim 8-nae, oblongo- 
ellipsoideae, utrinque late obtusae, 4-loculares, e hyalino fuscae, 
