[2] Allographa hypostictica was formally described by the lichenologists Klaus Kalb and Andre Aptroot in 2018.

The specific epithet hypostictica refers to the presence of the chemical compound hypostictic acid, a rare lichen product in the genus Allographa.

[2] The thallus of Allographa hypostictica is saxicolous, crustose, areolate to rimose, uneven, not corticate, dull, and ochraceous white, dissected by black hypothallus lines, and up to 0.2 mm thick.

Ascospores are single per ascus, hyaline but soon becoming pale brown, ellipsoid, densely muriform, approximately 50 by 8-septate, measuring 115–145 by 28–37 μm, constricted at several major septa, and surrounded by a gelatinous sheath about 3 μm thick.

[2] Allographa hypostictica was found on a sandstone boulder in an open cerrado habitat.