Observation 191295: Hebeloma cavipes Huijsman
When: 2014-12-02

Notes: Growing with Cistus in landscaped area.

Micro notes: Basidiospores light golden color, inamyloid. Long club-cylindric shaped cheilocystidia present, both cystidia and basidia have clamp connections at base.

Images

487745
487739
487741
487742
487977
Cheilocystidia, Congo red stain, 40x objective magnification, bright field illumination, Zeiss AxioImager.
487978
Cheilocystidia, Congo red stain, 40x objective magnification, bright field illumination, Zeiss AxioImager.
487979
Basidia, Congo red stain, 40x objective magnification, bright field illumination, Zeiss AxioImager.
487980
Basidia, Congo red stain, 40x objective magnification, bright field illumination, Zeiss AxioImager. Note clamp connection at base of cystidium in upper left (arrow).
487986
Basidiospores, 100x oil immersion objective magnification, bright field illumination, Zeiss AxioImager. Enhanced depth of field image from 3 images.

Proposed Names

27% (1)
Recognized by sight
75% (2)
Eye3 Eyes3
Recognized by sight

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Comments

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Cistus-Hebeloma association – a new one for North America?
By: Peter G Werner (pgwerner)
2014-12-02 17:34:43 CST (-0600)

I’ve been observing this association for several seasons now on the Merritt campus and finally took upon myself to document it today.

While there is coast live oak in the general vacinity also on campus, Hebeloma grows consistently within a few feet of Cistus and not so close to Quercus agrifolia, which seems to have other associates, such as Lactarius alnicola and Suillellus amygdalinus, growing next to the trees. I’m pretty sure based on this pattern that Hebeloma is growing in association with Cistus, not Quercus.

As it happens, this association is well-documented from Europe:

https://www.academia.edu/4758988/Cistophilous_Fungi
http://goo.gl/hs9bEw
http://mushroomobserver.org/17610
http://mushroomobserver.org/17615
http://mushroomobserver.org/17621
http://mushroomobserver.org/157923
http://mushroomobserver.org/185276

As far as I know, this hasn’t been recorded from North America, though. There are either of two possibilities – 1)An exotic species of Hebeloma that came over with potted Cistus, or 2) one of our native Hebeloma crustuliniforme group has crossed over to Cistus. Anyway, it’s interesting, and I’m saving herbarium specimens. I hope that at some point, somebody studying Hebeloma will take an interest, as this is a difficult group a bit outside of my area of specialty. (Then again, I suppose I should take an interest in other Hymenogastraceae than Psilocybe and Galerina.)

Created: 2014-12-02 17:05:28 CST (-0600)
Last modified: 2016-11-16 00:40:37 CST (-0600)
Viewed: 80 times, last viewed: 2016-11-16 21:56:53 CST (-0600)
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