1. Hypoxylon multiforme on decaying wood
2. Cordyceps myrmecophila parasitic on carpenter ants
3. Cordyceps myrmecophila parasitic on carpenter ants, closer view
5. Lobaria
oregana
A canopy-dwelling
foliose lichen in old growth conifer forests in the coastal
mountains
of the Pacific northwest USA. Cyanobacterial symbiont is
responsible
for fixing nitrogen and is present in internal cephalodia.
Habitat/habit
shot of a large thallus (about 1/2 metre long) along a branch
of a 200
year-old Douglas fir, 25 metres above the ground.
6. Lobaria
linita
Cross
section of thallus showing upper cortex, green algal layer, and
cyanobacterium (Nostoc sp.) in cephalodium (duller green below)
7. Ectomycorrhiza,
cross section
Russulaceous
mycorrhiza on Tsuga heterophylla (western hemlock).
Mycorrhiza
diameter is approximately 1/2 mm. This low magnification
view shows
the mantel of hyphae surrounding the host root.
8. Ectomycorrhiza,
cross section, enlarged
This higher
magnification shows the Hartig net surrounding
cortex cells,
in one case being sections in "face view" in its
position
between cells "in front" and "behind" the slide.
