gwj54's picture

Lichen on birch

Observed: 23rd November 2009 By: gwj54
S159 Neighbourhood Nature - current student
gwj54’s reputation in Fungi and Lichens
P1010323 006

lines across bark


Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

Species interactions

No interactions present.


dw5448's picture

Isn't it part of the bark?

Seems very regular. The illustration in Encyclopedia of Life seems to be an irregular white patch with scribbly dark lines. Didn't notice those features when I enlarged the picture.


mrs-smith's picture


I would suggest it was just the pattern of the bark. Many birch species do tend to have horizontal lines like this.

Blewit Boy's picture


I think what you are seeing might be the lenticels that appear on the surface of the bark in certain species of tree. They are particularly visible in Birch (Betula) and also Cherry (Prunus).


Syrphus's picture

See my similar comment on the

See my similar comment on the identical pic at



recording wildlife with The Recorder's Year on

Exobasidium's picture

Lichen on birch

Definitely lenticels.