208 
DR. J. MUELLER—LICHENES COLENSOANI. 
convenit, sed apothecia omnino immarginata hinc inde 
e forma regulari in arthonioideo-irregularem abeunt 
et affinitatem arctiorem cum tribu Graphidearum 
indicant. Locum nunc habeat juxta Celidium. 
Ordo IV. PYRENOCARPEZ. 
Trib. PyreNULER. 
*109. Porina (sect. SaGepiA) LeuCcOTHADLINA, Muell. Arg. ; 
thallus albus, tenuissimus, continuus et levis, demum 
farinulentus (gonidiis chroolepoideis); apothecia 
+ mm. lata, leviter depresso-globosa, fere parte dimidia 
emersa, rotundato-obtusa, nigra, opaca; perithecium 
integrum, basi tenue; paraphyses firme capillares ; 
asci angusti, l-seriatim 6-8-spori; spore 12-15 yu 
longee, 23-3 mw late, obtuse fusiformes, 2-loculares v. 
rarissime et 4-loculares.—Juxta cubensem P. mundu- 
lam, Muell. Arg., locanda est. Subsimilis neozelan- 
dica P. albinula, Muell. Arg., differt thallo minus albo, 
apotheciis minoribus et perithecio dimidiato.—Corti- 
cola, Colenso, 1506. 
