Observation 168635: Umbilicaria mammulata (Ach.) Tuck.
When: 2014-06-28
No herbarium specimen

Notes: Foliose lichen on rock, likely granite. Thallus attached to rock from one point. Smooth brown upper surface. Scurfy looking lower surface as a result of black rhizines.

I tried KOH 5% on the upper surface and got a yellowish green turning greenish black reaction but could find no mention of macro chemical reactions in the online resources.

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Thank you Jason
By: Terri Clements/Donna Fulton (pinonbistro)
2014-07-16 20:33:26 WIB (+0700)

I created a new posting for Lasallia papulosa.

Terri

Note, Lasallia papulosa is also present
By: Jason Hollinger (jason)
2014-07-16 07:41:42 WIB (+0700)

The last photo (image 430182) for example is Lasallia. Note the dimples, paler “dustier” coloration, etc.

Created: 2014-06-29 06:42:13 WIB (+0700)
Last modified: 2014-07-16 20:08:08 WIB (+0700)
Viewed: 41 times, last viewed: 2016-10-17 22:22:37 WIB (+0700)
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