Yellow Fieldcap Mushroom at QPRC LGA
Identification history
| Bolbitius titubans | 25 Jan 2024 | Heino1 | ||
| Unidentified | 2 Jan 2024 | MatthewFrawley |
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5 comments
Heino1
wrote:
24 Jan 2024
Given the gill colour, I wonder if this is a species of Bolbitius - or something else in the Bolbitiaceae.
Csteele4
wrote:
24 Jan 2024
@Heino1 hmm, that is a possibility. The shape is unlike any Bolbitius I've seen, did you have a species in mind? You're right, the gill colour is not right for this family - I'll rescind my confirmation.
Heino1
wrote:
25 Jan 2024
All that I can suggest is an aged Bolbitius titubans. A search for that species turned up a number of photos (on mycologically reliable websites) that have similarities with this sighting. On his MushroomExpert website Michael Kuo makes this interesting observation: Robust specimens are found on dung and in heavily fertilized soil, while flimsy specimens can be found in grassy areas with less nitrogen. He also refers to a 2015 molecular study of Bolbitius in Russia which found four groups within Bolbitius titubans. A little while ago I read the discussion parts of that paper and here are some of the authors’ observations:
(Group 1) Brightly coloured and fragile basidiocarps with a distinct yellow tint in combination with large, thick-walled basidiospores.
(Group 2) Faded basidiocarps with whitish, pale yellowish or beige pileus, without bright yellow tones, and white or pale lemon-yellow stipe.
(Group 3) Characterised by muted colouration of basidiocarps, not containing vivid yellow tones, but having greyish yellow, yolk-yellow, or olive-yellow pileus, wrinkled or venous at center. Thue authors found no clear taxonomic criterion, apart from pileus colouration, to separate this collection from the other groups.
(Group 4) There is no convincing morphological evidence of its independent status within the whole B. titubans complex other than significantly smaller basidiospores, with dimensions not overlapping those in other studied collections.
The authors refrained from equating the four groups to four distinct species, saying that their study was not sufficient to justify such a step. Naturally there is the question of what a comparable study across a broader geographical area would show. Today I have read more about Bolbitius titubans than the sum of all that I had previously read about this species!
(Group 1) Brightly coloured and fragile basidiocarps with a distinct yellow tint in combination with large, thick-walled basidiospores.
(Group 2) Faded basidiocarps with whitish, pale yellowish or beige pileus, without bright yellow tones, and white or pale lemon-yellow stipe.
(Group 3) Characterised by muted colouration of basidiocarps, not containing vivid yellow tones, but having greyish yellow, yolk-yellow, or olive-yellow pileus, wrinkled or venous at center. Thue authors found no clear taxonomic criterion, apart from pileus colouration, to separate this collection from the other groups.
(Group 4) There is no convincing morphological evidence of its independent status within the whole B. titubans complex other than significantly smaller basidiospores, with dimensions not overlapping those in other studied collections.
The authors refrained from equating the four groups to four distinct species, saying that their study was not sufficient to justify such a step. Naturally there is the question of what a comparable study across a broader geographical area would show. Today I have read more about Bolbitius titubans than the sum of all that I had previously read about this species!
Csteele4
wrote:
25 Jan 2024
@Heino1 wowza! As always, fantastic information! So, shall we label this as a Bolbitius?
Heino1
wrote:
25 Jan 2024
Yeah, I'll go with titubans (and have also done so with Bolbitius titubans (Yellow Fieldcap Mushroom)).
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Nearby sightings
Location information
- Coordinates 149.792846-35.455051
- Maps QPRC LGA
- Places Braidwood, NSW
Sighting information
- 4 - 15 Abundance
- 1 Jan 2024 02:35 PM Recorded on
- MatthewFrawley Recorded by
-
Collections
72 Araluen Road
Species information
- Bolbitius titubans Scientific name
- Yellow Fieldcap Mushroom Common name
- Not Sensitive
- Local native
- Non-Invasive
- Up to 738m Recorded at altitude
- Machine learning
Record quality
- Images or audio
- More than one media file
- Confirmed by an expert moderator
- Nearby sighting(s) of same species
- GPS evidence of location
- Description
- Additional attributes
