Ahtiana pallidula (aka Cetraria pallidula, Pallid Candlewax Lichen)

Location Summary

Substrate: On conifers such as Douglas Fir, Ponderosa pine, & Western Larch at low to medium elevations.

Identification Characteristics

Description: Thallus pruinose, at least at lobe tips; lower surface pale yellow, wrinkled.  Thallus loosely attached to ascending, pale yellow or greenish yellow, often pruinose on some lobes, with rounded, sometimes toothed lobes 4-10 mm wide; soredia & isidia absent; lower surface pale yellow, strongly wrinkled with a network of sharp ridges; rhizines abundant, pale, & slender. Apothecia abundant, produced on the margins, up to 10 mm in diameter, disks brown; black pycnidia rpominent, marginal or laminal.

Bibliography: Lichens of North America, by Brodo, Sharnoff, & Sharnoff

Database Entry:  Distance Everheart 12-26-13