Observation 76665: Umbilicaria mammulata (Ach.) Tuck.
When: 2011-09-19
(35.0° -83.0° )
No herbarium specimen

Proposed Names

29% (1)
Recognized by sight: On granite
56% (1)
Recognized by sight
84% (1)
Recognized by sight

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By far the most common Umbilicaria / Lasallia in the southeast
By: Jason Hollinger (jason)
2011-09-24 19:36:59 BST (+0100)

The others are:

U. mammulata – large, dull brown, no apothecia, abundant black rhizines

U. muehlenbergii – with angular black apothecia in broad dimples, shiny, tattered “plates” underneath instead of rhizines

U. caroliniana – very rare, forms crowded colonies, strongly folded and shiny, scattered rhizines

L. papulosa – strongly blistered, pale to brown below, paler than L. pensylvanica, no rhizines

L. pensylvanica – strongly blistered, black below, darker than L, papulosa, no rhizines

Created: 2011-09-19 20:00:02 BST (+0100)
Last modified: 2011-09-24 19:13:26 BST (+0100)
Viewed: 40 times, last viewed: 2016-10-21 12:25:59 BST (+0100)
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