Irish lichens

Lecidella elaeochroma
Order: Lecanorales       Family: Lecanoraceae

Species: Lecidella elaeochroma f. elaeochroma

Growth type crustose. Photos: On Ash and Sycamore. SW Ireland.

Very variable. Smooth or slightly granular, light-grey to yellowish-grey thallus surrounded by black prothallus. Often forms large mosaics. Apothecia with black discs, initially concave then convex with broad margins that become excluded. Ascus 8-spored, spores simple, thick-walled, 10-17 x 6-9 Ám. Microscope photos below.
L. elaeochroma f. soralifera has greenish-yellow soralia.

A pioneer species, common on smooth-barked trees and fences.
K+ yellow, C+ orange (usually), KC+ yellow, P-, UV+ orange. Reactions can be faint.

Similar: Amandinea punctata. Chemical reactions negative. Buellia disciformis. K+ bright yellow, C-. Spores 1-septate


Lecidella elaeochroma


Lecidella elaeochroma


Lecidella elaeochroma


Lecidella elaeochroma


Lecidella elaeochroma

Microscope photographs
Lecidella elaeochroma, microscope image


Lecidella elaeochroma, microscope image


Lecidella elaeochroma, microscope image
Lecidella elaeochroma April and December 2009, January 2010

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