Observation 204823: Physconia americana Essl.

When: 2015-05-21

Collection location: Paso Robles, California, USA [Click for map]

35.6282° -120.8831° 1150m

Who: J-Dar

No specimen available

Notes:
On Valley Oak (Quercus lobata) bark in mixed oak forest at intersection of Klau Mine Road and Dodd Road.

Thallus grey, lobes pruinose, K- upper cortex, underside pale, rhizines black, squarrose and dense, apothecia pruinose with lobules on margin (new photos added, green due to being wet).

Images

522281
522280
522282
522283
522312
Apothecia lobules
522313
Apothecia closeup

Proposed Names

-61% (2)
Recognized by sight
92% (2)
Eye3 Eyes3
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Hasty specimen review!
By: J-Dar
2015-05-23 10:22:23 PDT (-0700)

Sorry for that, not sure what happened but I surely did not look at it and made an odd choice based on a photo I saw somewhere. All features point to P. americana, thanks!

Note the little lobules around the apothecia
By: Jason Hollinger (jason)
2015-05-22 21:20:45 PDT (-0700)

Very typical of this species. Note that K- cortex should rule out Physcia, unless you meant the medulla was K-? Still, dense pruina, dense black rhizines, lobules, all point to Physconia americana

Created: 2015-05-22 20:42:44 PDT (-0700)
Last modified: 2015-05-23 10:20:58 PDT (-0700)
Viewed: 44 times, last viewed: 2017-06-20 01:34:00 PDT (-0700)
Show Log