| Key to subsections: |
|
| 1. Lamellae ascending, edge convex. |
Subsect. Hiemales |
|
1. Lamellae horizontal to arcuate, edge
straight or concave. |
Subsect. Omphaliariae |
Subsect. Hiemales
- Hyphae of the pileipellis
smooth or rarely with very few, scattered excrescences.
|
|
- Hyphae of the pileipellis
diverticulate.
|
|
Subsect. Omphaliariae
- Spores globose to broadly ellipsoid (q < 1.6, qav ~ 1.3), pigment in hypoderm encrusting or intracellular
|
|
- Cheilocystidia lageniform to fusiform with simple or branched neck, hyphae of the pileipellis with cylindrical excrescences, pigment in hypoderm brown
encrusting:
|
|
- Cheilocystidia clavate to subcylindrical, hyphae of the pileipellis with inflated excrescences, pigment in hypoderm intracellular, poorly visible:
|
|
- Spores ellipsoid, amygdaliform (q > 1.6, qav ~ 1.9), pigment in hypoderm intracellular, brown:
|
|
Alternatively the differences between the four
more common species can be tabulated as follows:
| |
lamellae |
spores |
cheilocystidia |
pileipellis |
| M.
alba |
horizontal to arcuate, edge straight
or concave |
globose |
clavate to subcylindrical |
covered with inflated, lobed excrescences |
| M.
speirea |
horizontal to arcuate, edge straight
or concave |
pip-shaped |
subcylindrical, subfusiform, clavate,
subutriform, sometimes furcate |
covered with cylindrical excrescences |
| M.
hiemalis |
ascending, edge convex |
pip-shaped |
fusiform to somewhat utriform |
covered with cylindrical excrescences |
| M.
olida |
ascending, edge convex |
pip-shaped |
cylindrical, subclavate, subfusiform |
smooth |
|
