Irish lichens

Collema multipartitum

Order: Peltigerales       Family: Collemataceae

Species: Collema multipartitum

Growth type foliose.
Photos: On limestone. The Burren, Co. Clare, Ireland.

Thallus loosely attached, rounded or irregular, much branched, deeply lobed. Lobes are narrow, fan-shaped, irregular and +/- contorted. Apothecia frequent, isidia absent. Ascus clavate with strongly thickened apex. Spores 3-septate, 26-43 x 4.5-6.5 Ám. Micro photos below.

On hard, exposed limestone. Frequent in the Burren, scattered distribution elsewhere in Ireland. Often occurs with C. polycarpon. Chemical reactions negative.


Collema multipartitum


Collema multipartitum


Collema multipartitum

Microscope photographs
Collema multipartitum, ascus


Collema multipartitum, ascus
Collema multipartitum. The Burren, Ireland. July 2009

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