When: 2016-12-17

Collection location: Parque de Monsanto, Lisboa, Portugal [Click for map]

Who: zaca

No specimen available

Notes:
At the same place where I found H. porphyrosporum, another species new to me appeared, the recent named H. limbatum (see the reference). It is a member of section Denudata, thus having long cheilocystidia swollen at apex and constricted below, and belongs to the recent named subsection Clepsydroida, hence the cheilocystidia are also significantly swollen in the lower half, giving it an hourglass appearance. It is a species usually found under Quercus trees, as it was in all of my observations of this species (three times at this location and others at a location about 60-70 km north of this place; I only present one from each of these locations). It differs from the only other species in this subsection found here, H. cavipes, particularly in the smaller average spore Q.

Images

Microscopy: Cheilocystidia (x400, in a mixture of phloxine and congo red);
Microscopy: Cheilocystidia (x1000, in a mixture of phloxine and congo red);
Microscopy: Clamp connections (x1000, in a mixture of phloxine and congo red) and pileipellis (x100, in water);
Microscopy: Spores (x1000, in a mixture of phloxine and congo red).

Proposed Names

87% (1)
Recognized by sight: My acknowledgment to Professor Henry Beker and Dr. Ursula Eberhardt who determined the Hebeloma species, based on the exsiccata that I sent them, including DNA sequencing.
Used references: Ursula EBERHARDT, Henry J. BEKER, Jan VESTERHOLT, Nicole SCHUTZ: The taxonomy of the European species of Hebeloma section Denudata subsections Hiemalia, Echinospora subsect. nov. and Clepsydroida subsect. nov. and five new species; Fungal Biology 120: 72-103, 2016.

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus

Comments

Add Comment
No one has commented yet.

Created: 2017-05-24 12:08:21 CDT (-0500)
Last modified: 2017-05-24 12:08:34 CDT (-0500)
Viewed: 36 times, last viewed: 2019-07-11 07:15:16 CDT (-0500)
Show Log