When: 2009-02-26

Collection location: Sewanee, Franklin Co., Tennessee, USA [Click for map]

Who: Chris Parrish (kitparrish)

No specimen available

Location: 35°13’21.51"N, 85°57’3.86"W, el. 572 m, Rutledge Point Trail.

Substrate and habitat: On exposed sandstone rocks and bluffs at the western rim of the Cumberland Plateau. Surrounding forest is mature, oak-dominated eastern deciduous woodland.

Rutledge Point Trail, 26 Feb 2009: 38722-38723
Rutledge Point Trail, 27 Feb 2009: 38724

Jason, your comment on “radially-fibrous prothallus” in Observation 19162 was more than enough encouragement for me to post a few photos of local microlichens. Identifying these beauties is way beyond my skill level at this point, but it is certainly fun to begin recognizing familiar patterns in the woods.

Do these three photos actually represent the same species?

Sharnoff’s Ochrolechia yasudae gallery
CNALH images and locality map, and a larger, interactive locality map.

Common name: coral saucer lichen

Species Lists


Proposed Names

-5% (2)
Recognized by sight
70% (1)
Recognized by sight: The light grayish thallus with large, pinkish, lecanorine apothecia get it to Ochrolechia. The saxicolous habit and abundant isidia indicate O. yasudae. I’ve never seen it fertile; 38724 is great photo!
Used references: Brodo et al. 2001 – The Ochrolechia key in ‘Lichens of North America’ is pretty good since this genus is one of Brodo’s specialties.

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= Observer’s choice
= Current consensus


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