8 s 
Ceterum Parm. levigata, P. sublevigata, P. meizospora Ny, 
et P. Terana Tuckerm. quoad faciem externam similitudinem 
tantam prebent, uti nullo alio modo, nisi chemice eas distinguere 
possibile sit; nam sporarum mensure unice non multo valent, 
Num autem hsec chemica distinctio etiam ad rectam separa- 
tionem specierum illarum sufficiat, in presenti nondum extra 
dubium positum est. * 
30. Parmelia meizospora (Nyl. Synops. meth. p. 383) Nyl, 
in Regensb. Flora 1869, p. 292. 
Lagoa Santa, ad arborum corticem. 
Similima Parmelie levigate Ach., sed sporas majores et 
medullam hydrate Kalico subito e flavo rubricosam habet. Spore 
in spec. pres. long. 0,013— 0416, lat. 0,007—0114 mm. 
314. Parmelia sublevigata Nyl. in Regensb. Flora 1869, 
p. 292. 
Lagoa Santa, ad corticem arborum; Serra da Manti- 
queira. : 
Simillima Parmelie levigate , sed medulla hydrate Kalico 
affusa e flavo cito rubricose tincta. Spore in speciminibus pre- 
sentibus long. 0,009—0414 mm., lat. 0,005—006 mm. 
39. Parmelia Texana Tuckerman in The Americ. Journ. of 
scienc. et art., 1858, p. 424; Nyl. in Regensb. Flor. 1869, 
p. 292. 
Lagoa Santa, in cortice arborum silvestrium. 
Similis Parmelie levigate Ach. Medulla nec hydrate Kalico 
nec hypochlorate calcico tincta; superficies thalli hydrate Kalico 
pulchre flavescit. 
Spore in speciminibus Brasiliensibus long. 0,009—011 mm. 
lat. 0,005—006 mm. 
In archetypo hujus speciei, quod benigne nobis communicavit 
auctor, sporas invenimus long. 0,009—010 mm., lat. 0,008— 
006 mm. ; 
