Strumpshaw Fen Slime Moulds & Fungi – April 2024

28 April 2024

During April we continued to see Reticularia lycoperdon – the false puffball slime mould – and much more Lycogala epidendrum – wolf’s milk slime mould.

We had expectations of seeing more Stemonitis slime moulds particularly after the Stemonitis flavogenita last April, but this April remained cool and slime moulds, generally, prefer higher ambient temperatures. [1]

In early April at the end of the drainage channel path—by the bench—we spotted some Lycogala epidendrum and Scutellinia (eyelash fungi) on the disintegrating timber rebatement.

Lycogala epidendrum on rebatement
Woodland Trail, Strumpshaw Fen – 7th April 2024

A few days later more aethalia had developed.

Lycogala epidendrum on rebatement
Woodland Trail, Strumpshaw Fen – 10th April 2024

And a week later

Lycogala epidendrum on rebatement
Woodland Trail, Strumpshaw Fen – 14th April 2024

Further along on the decaying rebatement were more maturing aethalia.

Lycogala epidendrum on rebatement
Woodland Trail – Strumpshaw Fen – 14th April 2024

Mid April

In mid-April—on a decaying trunk in The Dell—we saw a solitary rose coloured Lycogala whose peridium was broken exposing the scarlet goo inside.

Lycogala
The Dell – Strumpshaw Fen – 14th April 2024

Near The Outpost—on one of the log piles near the path—we spotted a cluster of immature Stemonitis slime mould sporangia.

Stemonitis
Near The Outpost – Strumpshaw Fen – 14th April 2024

Late April

At the Zen Zone the daughter—whose eyesight is much better than mine—spotted a log that was covered in groups of a cinnamon/pinkish buff growth with a multitude of white stalks with globular head.

The cinnamon/pinkish buff growth is certainly a mush of slime mould spore mass and the white stalks is a Stilbella—a fungus that parasitises slime moulds and they looked very similar to what my daughter found in August 2023 during her mycological survey of the reserve woodland.

Stilbella – a fungus that parasitises slime moulds
The Zen Zone – Strumpshaw Fen – 27th April 2024

At Basecamp—on the same log that we found a super Stemonitis flavogenita—we spotted a small pale yellow Stemonitis slime mould plasmodium in the process of turning into juvenile sporangia.

Possibly Stemonitis flavogenita
Basecamp – Strumpshaw Fen – 27th April 2024

The next day it hadn’t developed as expected.

Possibly Stemonitis flavogenita – the next day
Basecamp – Strumpshaw Fen – 28th April 2024

In the woodland—after The Dell and before the Gnarly Oak—we spotted a small woody ellipsoid covered in what could be Lachnum virgineum–the snowy disco. Running the image through Mycokey’s AI it is most likely L. virgineum but a small possibility that it’s Lachnum impudicum.

Probably Lachnum virgineum
Near The Dell – Strumpshaw Fen – 27th April

Towards the end of the woodland trail we spotted some Hemitrichia.

Hemitrichia
End of Woodland Trail – Strumpshaw Fen – 27th April 2024

Nearby in the root hollow of fallen tree the daughter spotted what is most likely Stemonitopsis typhina—it seems to fit the description in Bruce Ing’s identification handbook. [2]

Probably Stemonitopsis typhina in tree root hollow
End of Woodland Trail – Strumpshaw Fen – 27th April 2024

In the photos below the maturing sporangia are turning a light vinaceous grey.

Probably Stemonitopsis typhina in tree root hollow
End of Woodland Trail – Strumpshaw Fen – 27th April 2024
Probably Stemonitopsis typhina in tree root hollow – fresh sporangia
End of Woodland Trail – Strumpshaw Fen – 27th April 2024
Probably Stemonitopsis typhina in tree root hollow – maturing sporangia
End of Woodland Trail – Strumpshaw Fen – 27th April 2024

The next day the sporangia had turned fuscous.

Probably Stemonitopsis typhina in tree root hollow – the next day
End of Woodland Trail – Strumpshaw Fen – 28th April 2024
Probably Stemonitopsis typhina in tree root hollow – the next day
End of Woodland Trail – Strumpshaw Fen – 28th April 2024

EDIT 05.05.2024 – A week later the peridia had gone exposing the pale mouse-grey spore masses.

Probably Stemonitopsis typhina in tree root hollow – a week later
End of Woodland Trail – Strumpshaw Fen – 5th May 2024

[1] Myxomycetes: Biology, Systematics, Biogeography and Ecology (Steven L. Stephenson and Carlos Rojas).
[2] The Myxomycetes of Britain and Ireland – Bruce Ing.

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