Lecidea mamillana Tuck.
Proc. Amer. Acad. Arts & Sci. 12: 180 (1877).
Protologue: Thallo squamaceo-areolato viridi-glaucescente (cinerascente aut dealbato) areolis mox turgescentibus radiatimque striatulis ambitu sublobatis, discretis vel dein aggregatis; apotheciis in areolis innatis centralibus minutis (latit. 0.3-0.7 mm.) plano-convexis nudis margine tenui evanido. Hypothecium fuscum. Sporae octonae, ellipsoideae, simplices, incolores, longit. 0,009-18mm, crassit. 0,005-9mm, paraphysibus conglutinatis. Spermatia minuta, recta, in sterigmatibus simpliciusculis.
Protologue type data: On lime rocks, Alabama, Judge Peters.
Type locality: USA, Alabama, on lime rocks, Judge Peters (xx - holotype).