Lepraria pacifica (pacific dust lichen) is a whitish-blue-green leprose crustose lichens that grows on its substrate like patches of granular, caked-up, mealy dust grains. Like other members of the Lepraria genus, it only reproduces asexually. Lichen spot test are K− or K+ purple, C ± pink, KC+ pink, P−, UV+ blue-white.