Quote:
Originally Posted by AlanS  I agree with Jenny that everything posted in this thread is Xanthoria parietina, but this thread well illustrates the difficulty at times of separating the two species.
Microscopically, X. parietina is said to have longer conidia (obtained by a squash of a pycnidium, an orange pimple in the thallus surface), 2.7-3.6 μm in X. parietina, 2.2-2.9 μm in X. polycarpa, but these figures are from an American source (Lindblom, 1997) and I don't know how well they apply to British/European material.
Alan |
Thanks for that information Alan,
as Rob says, there does not seem to be any sources of information on how to (easily - for novices to understand) prepare samples of lichens and to understand what you are seeing under the scope,
being totally without any skills in the use of a microscope does not help either
a nice pictorial guide in simple terms would fit the bill nicely
Brian.