When: 2017-04-25

Collection location: Monterey Co., California, USA [Click for map]

35.8584°N 120.3119°W 482m [Click for map]

Who: J-Dar

Specimen available
Collection number: Jason Dart 798

On sandstone bedrock outcrop in semi-arid grassland habitat.

Thallus pale, shiny, tightly adnate, with marginal lobes that have blackened edges and are subdivided into small lobules. Thallus becoming areolate to somewhat lobulate in center. Thallus algal layer divided by medulla hyphae. Heavily afflicted with a red-brown parasite. Apothecia common, lecanorine, thalline margin concolorous with thallus, shiny, thick and raised. Disk red-brown, shiny. Hymenium hyaline, epihymenium thin, red-brown, with small crystals, both the color and crystals soluble in K. Hypothecium hyaline. Algal layer thick across base of apothecia, but jagged. Medulla at base of apothecia with POL+ crystals insoluble in K.


in KOH
Thallus at 100x showing jagged algal layer

Proposed Names

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus


Add Comment
No one has commented yet.

Created: 2019-01-04 08:47:42 PST (-0800)
Last modified: 2019-01-04 10:14:17 PST (-0800)
Viewed: 8 times, last viewed: 2019-02-26 20:26:19 PST (-0800)
Show Log