Maas Geesteranus (1992) divided the old
section Basipedes into five new sections: Sect.
Basipedes, sect. Bulbosae, sect. Clavulares,
sect. Exiguae, and sect. Longisetae as
follows:
| Spores non-amyloid |
| |
sect. Longiseta: Pileus surface
with acute spinules, clampless (M. longiseta=M. aciculata) |
| |
sect. Bulbosae: Pileus surface
without spinules, clamped (M. bulbosa) |
| |
|
|
|
|
| Spores amyloid |
| |
sect. Clavulares: Spores subglobose,
lamellae forming a pseudocollarium, stipe springing
from a basal disc, clampless, dermatocystidia absent
(M. clavularis) |
| |
sect. Exiguae: Spores subglobose,
lamellae attached to the stipe, stipe bulbous, not
springing from a basal disc, with clamps, dermatocystidia
present (M. marocana) |
| |
sect. Basipedes: Spores pip-shaped
to almost cylindrical, lamellae forming a pseudocollarium
(M. mucor, M. rhenana, M. stylobates,
and M. tenuispinosa) |
In
the wiev of Maas Geesteranus Mycena sect. Basipedes
(Fr.) Quél. comprises four species in Europe of which
two are reported from Norway. The species are Mycena
mucor (Batsch) Quél., M. rhenana Maas
Geest. & Winterhoff, M. stylobates (Pers.)
P. Kummer, and M. tenuispinosa Favre. The recently described M. mucoroides Aronsen also is a member of this section.
| 1. Cheilocystidia absent. Odour nitrous.
Terminal cells of the pileipellis inflated, densely
covered with warts. Caulocystidia broad, smooth. Typically growing
on fallen debris of Alnus glutinosa: M.
rhenana |
| 1. Cheilocystidia present. |
| |
2. Cheilocystidia with narrow excrescences
1-2 µm wide. |
| |
|
3. Odour none. Pileal surface
smooth. Spores 3-4.5 µm broad. Caulocystidia
narrow, often furcate. Growing on fallen, decaying
leaves of Quercus: M.
mucor |
| |
|
4. Odour none. Pileal surface densely
covered with acute spinules. Spores 4.5-6 µm
broad: M. tenuispinosa. |
| |
2. Cheilocystidia with coarse, inflated
excrescences |
| |
|
5. Basal disc with a ciliate margin; caulocystidia fusiform; pileipellis without acanthocystoid cells: M.
stylobates |
| |
|
6. Basal disc without a ciliate margin; caulocystidia short, variously shaped; pileipellis with acanthocystoid terminal cells: M. mucoroides |
The information that Mycena rhenana
lacks cheilocystidia may possibly prove not to be entirely
true. According to Maas Geesteranus & Winterhoff (1985)
thorough search in three different collections did not reveal
any cheilocystidia. I have examined ten collections with the same result. If it very rarely should prove to possess
cheilocytidia, it would after all be identified by the nitrous
smell, and by the
inflated terminal cells of the pileipellis and the caulocystidia. |
