When: 2016-01-05

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

Who: zaca

No specimen available

Notes:
Growing on a pile of wood pieces and tree leaves; Same place than observation 224024 and of my other observations in coprinoid mushrooms since then.

From Uljé key:

KEY TO THE SECTIONS AND SUBSECTIONS
1. Pileus with veil, without setules or setae.
4. Veil mainly consisting of elongate elements; section Coprinus
5. Veil abundant, loosely attached and easy removable from pileus; basidiocarps very small to small, a few medium-sized; stipe 1-4(-6) mm wide; pileus white to greyish below veil, rare brown; never annulus on stipe.
7. Veil made up of branched, diverculate, thin- or thickwalled hyphae; if elements in chains with distinct end cells then the walls are thickened and yellow-brown; subsect. Alachuani Sing.

COPRINUS SUBSECTION ALACHUANI
Basidiocarps very small to medium-sized; expanded pileus 6-60 mm. Pileus with veil made up of weakly to strongly diverticulate, and then often thick-walled elements. Stipe smooth, but in most cases covered with very small velar flocks, especially at base (subsect. Alachuani Sing.).
1. Spores warty.
28. Spores amygdaloid: C. echinosporus
28. Spores ellipsoid, ovoid.
29. Basidia 4-spored: C. phlyctidosporus
29. Basidia 2-spored: C. rugosobisporus

As mentioned in the key, if the spores are amygdaloid, then C. echinosporus. I think that we can rule out this species, since in spite of the existence of amygdaloid spores, the majority is ellipsoid to ovoid. So the question relies on the 2- or 4-spored basidia. I should mention that I could see some (small number) of the basidia but could not be certain, they seemed like 2-spored. On the other hand, the dimensions obtained for the spores fit better in C. phlyctidosporus than in C. rugosobisporus, the latter being wider. For the spores I got the following dimensions:
(8.2) 8.9 – 10.7 (11.4) x (5.7) 6.1 – 6.7 (7.1) µm
Q = (1.3) 1.4 – 1.6 (1.8) ; N = 40
Me = 9.9 × 6.4 µm ; Qe = 1.5 .

All this species in the former genus Coprinus moved to the genus Coprinopsis and we have this table of old and new names
according to Index Fungorum:
Coprinus echinosporus -——> Coprinopsis echinospora
Coprinus lagopides=Coprinus phlyctidosporus -——> Coprinopsis phlyctidospora
Coprinus rugosobisporus -—> Coprinopsis rugosobispora.

Images

Microscopy: Spores-1 – in water and congo red (x1000);
Microscopy: Pileipellis-1 – in water and congo red;
Microscopy: Pileipellis-2 – in water and congo red;
Microscopy: Stiptipellis – in water and congo red.

Proposed Names

87% (1)
Recognized by sight
Used references: Flora Agaricina Neerlandica, Vol.6: Uljé keys to subsections and species in Coprinus: http://www.grzyby.pl/...
Based on microscopic features

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= Observer’s choice
= Current consensus

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Created: 2016-01-12 16:54:28 MST (-0700)
Last modified: 2016-01-12 16:58:54 MST (-0700)
Viewed: 96 times, last viewed: 2019-06-30 11:29:37 MDT (-0600)
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