Inocybe lacera - possibly?

[RobSutton]

Found this rather nice specimen growing under Willow (amongst various mosses and leaf litter) in sandy, alluvial material deposited alongside one of the inflow streams feeding Malham Tarn.



Looking at the spores I think it might be Inocybe lacera as they seem to have the long, slightly irregular shape described in the books.:


Cystidia were present on gill edge, gill face and some rather simple ones at the top to the stipe.

Cheilocystidia:


Pleurocystidia:


Stem Cystidia:


Anybody familiar enough with this one to confirm?

ps I think the moss is Plagiomnium ellipticum or something very similar.

[SheffieldLass]

Hi Rob
I found Inocybe lacera on the 8th July, under willow, birch and spruce close to a rather damp path. The spores on mine were a bit longer and narrower than yours, but with the same sort of irregular look. 12-16.3 x 4.3-5.8um, average 13.4 x 5.1, Qav 2.6. Cheilocystidia and pleurocystidia were very similar to yours, but they are rather like that for quite a few Inocybe.

I think the spores are the most distinctive feature of I lacera, and from Funga Nordica seems to be the only one with those type of spores and pleurocystidia. So I think you are right with I lacera.



Melanie

[Chris Yeates]

Originally Posted by RobSutton

ps I think the moss is Plagiomnium ellipticum or something very similar.

sad isn't it? that was the first thing I looked at when I saw your (very good) photograph ; I thought P. affine to begin with, but you could well be right (I don't recall ever knowingly seeing ellipticum) - I am truly a micro-person at heart, it would seem

pps moss leaves under the microscope are very good for using stacking software on - have you ever tried it, Rob?)

ppps I think I. lacera is a good shout, as Melanie rightly says, and it is a very variable taxon as well, so small differences is spore measurements are probably not significant

Chris

[RobSutton]

Originally Posted by SheffieldLass

Hi Rob
I found Inocybe lacera on the 8th July, under willow, birch and spruce close to a rather damp path. The spores on mine were a bit longer and narrower than yours, but with the same sort of irregular look. 12-16.3 x 4.3-5.8um, average 13.4 x 5.1, Qav 2.6. Cheilocystidia and pleurocystidia were very similar to yours, but they are rather like that for quite a few Inocybe.

I think the spores are the most distinctive feature of I lacera, and from Funga Nordica seems to be the only one with those type of spores and pleurocystidia. So I think you are right with I lacera.



Melanie

Thanks Melanie - there does seem to be a difference in spore size but the shape seems a good fit and as Chris says it's quite a variable species then I'm happy with that.

Originally Posted by Chris Yeates

sad isn't it? that was the first thing I looked at when I saw your (very good) photograph ; I thought P. affine to begin with, but you could well be right (I don't recall ever knowingly seeing ellipticum) - I am truly a micro-person at heart, it would seem

pps moss leaves under the microscope are very good for using stacking software on - have you ever tried it, Rob?)

ppps I think I. lacera is a good shout, as Melanie rightly says, and it is a very variable taxon as well, so small differences is spore measurements are probably not significant

Chris

Thanks Chris - I was going on the small blunt spines around the edge and leaves that barely descend the stem. Will have to have a go with focus stacking some mosses, even fairly flat leaves like these had don't focus across much of the leaf at the same time.