Apothecia scutelliformia, orbicularia, thalli disco horizontaliter
adnata, margine thallode aequali. Discus primo conniventi-clausus,
subceraceus. - Thallus e centro horizontaliter expansus, bilateralis,
forma varius, hypothallo suffultus. _Fries Lichenogr. europ. 56._
1. PARMELIA PERLATA, thallo foliaceo imbricato membranaceo laevi,
virescenti-glauco, subtus fusco-nigro obsolete fibrilloso, lobis
rotundatis nudis, apotheciis disco rubro, margine tenui.
Lichen perlatus _Linn. Wulf. in Jacq. collect. IV._ 273. _t._ 10.
Parmelia perlata _Achar. Lichenogr. p._ 459. _Fries! Lichenogr.
europ._ 59. _A. Rich. Fl. Nov. Zeel. p._ 32.