Thistle's picture

Pseudevernia furfuracea

Observed: 20th February 2013 By: ThistleThistle’s reputation in Fungi and LichensThistle’s reputation in Fungi and LichensThistle’s reputation in Fungi and LichensThistle’s reputation in Fungi and Lichens
Pseudevernia furfuracea
Pseudevernia furfuracea
Pseudevernia furfuracea
Pseudevernia furfuracea
Pseudevernia furfuracea
Description:

A strap-like lichen on a twig (perhaps hawthorn). Grey on the top surface and dark on the underside with turned-over edges. The specimen had a small number of small apothecia (see lower left of specimen in photo 3); the inside of the apothecia appeared brown/tan. Photo 4 shows is a photomicrograph of the isidiate surface. Photo 5 is a photomicrograph of the tip of one of the lobes: is this just the growing tip or some other structure.
All features other than the apothecia are typical of Pseudevernia furfuracea. Apothecia in this species are described as rare and as being large and flat: are these just undeveloped or is my ID wrong?

Identifications

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Species interactions

No interactions present.

Comments

synan's picture

Your ID...

is spot on. Great series of photos.

I agree that you've got apothecia. Smith et al. describes them as infrequent.

The black tips are also present on my herbarium sample. I can only assume they are natural rather than a sign of infection. And they don't appear to house pycnidia.

Nigel

Thistle's picture

Many thanks!

A macro lens and, more to the point, a tripod has helped. Also recently got a starter microscope with USB connection. Watch this space!

Ian