When: 2016-12-03

Collection location: Barragem da Póvoa e Meadas, Portalegre, Portugal [Click for map]

Who: zaca

No specimen available

Notes:
See the notes of observation 277184.
This observation refers to a species of Hebeloma that can be found in typical mediterranean habitats, dominated by Quercus trees, particularly Q. suber is ever present, where some disperse pines and/or eucalyptus can be present and many shrubs (including Q. coccifera, Arbutus unedo and several others). In this particular observation, the specimens were located at the interface of the ancient forest with some fields now used for agricultural purposes.

According to the references, H. cavipes is a member of section Denudata, subsection Clepsydroida. Quoting from Ref. 1: “The main morphological features that distinguish species of H. subsect. Clepsydroida are the shape of the cheilocystidium, significantly swollen at
the apex and also swollen in the bottom half, but more slender in the median area giving the cheilocystidia an hourglass appearance and often with some median thickening; and the spores with a majority that are distinctly ornamented (O3) and with the perispore somewhat loosening to distinctly loosening in few to many spores (P1,P2) and distinctly dextrinoid to strongly dextrinoid (D2,D3)”.

Images

Microscopy: Hymenium views (x400, in congo red);
Microscopy: Cheilocystidia (x1000, in congo red);
Microscopy: Basidia (x1000, in congo red);
Microscopy: Basidia (x1000, in congo red and in lugol).

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.

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Created: 2017-05-23 10:50:24 MDT (-0600)
Last modified: 2017-05-23 12:08:55 MDT (-0600)
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