Observation 113010: Helvella macropus (Pers.) P. Karst.
When: 2012-09-22
( 3200m)
Herbarium specimen reported

Notes: Under Pinus hartwegii.

Spores smooth and elliptical, with a large oil droplet.

Asci 10 micrometers wide.

Spores measured from the outside surface (not the hymenophore):

19 [21.4 ; 23] 25.4 × 11 [12 ; 12.8] 13.8 µm
Q = 1.5 [1.7 ; 1.9] 2.1 ; N = 15 ; C = 95%
Me = 22.2 × 12.4 µm ; Qe = 1.8

20.07 10.36
23.92 12.42
24.16 13.00
23.51 11.94
19.88 12.03
21.66 13.11
21.07 12.83
21.06 13.11
21.67 12.61
21.48 12.86
25.08 12.20
23.58 11.65
23.41 12.75
22.43 12.10
20.42 13.04

Images

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270795
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Asci 1000x
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Spores 1000x
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Non-fertile surface outside of cup cross section 400x
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Non-fertile surface outside of cup cross section 400x
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Non-fertile surface outside of cup cross section 400x
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Asci tips 400x
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Pileus trama 400x
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Fruit body cross section 40x
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Fruit body cross section 100x
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Fruit body cross section 100x

Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Maybe another Helvella species
By: Nicolas VAN VOOREN (NicoV)
2013-01-11 08:52:54 PST (-0800)

Macroscopically it looks more like H. rivularis or H. fibrosa (= H. villosa). To be sure it is necessary to observe the spores: in H. macropus spores are fusoid (and finely verrucose), in the other species spores are ellipsoid.

A video of this observation
By: Alan Rockefeller (Alan Rockefeller)
2012-12-22 04:06:56 PST (-0800)

Created: 2012-10-09 18:24:23 PDT (-0700)
Last modified: 2013-03-12 06:22:14 PDT (-0700)
Viewed: 66 times, last viewed: 2016-09-10 23:59:23 PDT (-0700)
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