 
lastdragon.org
Images of British Lichens
Phaeocalicium populneum (Brond. ex Duby) A.F.W. Schmidt
A 'pin' lichen, with tiny, black, stalked, ± globose apothecia less than 1 mm in height, differing from many other pin lichens by not breaking down to a powdery mass of spores, thallus not visible, immersed in the substrate surface; ascospores 1-septate, with dark, smooth walls. Very local and scarce on old twigs and branches of Poplar (Populus) species.
Refs: Smith et al. (2009), 690; Purvis et al. (1992), 460; Nordic Lichen Flora (1999) 1: 60, 89 (photo); Thor & Arvidsson (1999), 303 (photo), 411. |
 |
 |
| On Balsam Poplar hybrid, probably P. x jackii, Kindrogan, Perthshire, April 2008. (Note that the yellow thallus is Xanthoria.) |
Lichens HOME PAGE | Index of Species | Conditions of Use and e-mail contact | References | Site Home Page
© A.J. Silverside
Uploaded September 2010, last modified November 2011
|
