Tubaria and Strobilurus

[SheffieldLass]

Does anyone have the microscopic details (cheilocystidia and spore size) for Tubaria dispersa? ... I've scoured the net but not found any, though I've now got most of the details for the other British Tubaria species. I'm trying to properly nail the one I found on New Years Day, growing from a hawthorn seed ... Spores were (6.9) 7.3-8.6 (9.8) x (4.1) 4.6-5.3 (5.7)um, ratio 1.5-1.8, cheilocystidia 3-10um dia, 45-58um long




sporescheilocystidia

I've found two Strobilurus species within the last fortnight (at least I think they both are, though there is a question mark over the first one) ... thought I'd share the microscopic wow factor of one of them ... the other is very mundane by comparison...

Strobilurus tenacellus:
I've got a query on the spore size on this one .. these measured 3.9-4.7(4.9) x 1.9-2.5um, ratio 1.7-2.3, which is much lower than the 5-7x2.5-4um size that is quoted .. so have I got something wrong here?


spores
cheilo and pleurocystidia

Strobilurus esculentus:

gill trama showing cheilocystidia and pleurocystidia
cheilocystidia and pleurocystidia with crystals
Crystals ...if only they were emeralds or diamonds ...

And if that isn't enough excitement there is more to be had from the stem ..
caulocystidia

I got a load of fun from discovering them for the first time ...

Melanie

[Chris Yeates]

hi Melanie

have you definitely ruled out that small-spored "tenacellus" from being Baeospora myosura?

the spore measurements and those cystidia would lead me to the latter

regards

Chris

[Chris Yeates]

Originally Posted by SheffieldLass

Does anyone have the microscopic details (cheilocystidia and spore size) for Tubaria dispersa? ...

Melanie

hi M

this might help (from key to Tubaria in 1st edition of Nordic Macromycetes Vol 2):

Gills remaining yellow; cap 0.5-2 cm, conical to convex, not distinctly
hygrophanous , ochraceous; gills ± decurrent , stem at first pure white, then
ochraceous. Sp 5-6 x 2.5-3.5 um, very finely punctate (Fig. 583, 612). — On
the ground under Crataegus; autumn. FAD 127 C, Phil 158, R&H 465.
D: c. N: 2 Akh (Oslo). S: 1-2 o-r .
T. dispersa (Pers.) Sing. (=T. autochthona (Berk. & Br.) Sacc.)

best

Chris

[SheffieldLass]

Originally Posted by Chris Yeates

hi Melanie

have you definitely ruled out that small-spored "tenacellus" from being Baeospora myosura?

the spore measurements and those cystidia would lead me to the latter

regards

Chris

Thanks for that, I'll check it out, I hadn't even ruled it in! It looked so like the Strobilurus that I'd found before ... First glance the basidia fit, I'll go back to the saved microscopic details to check the other things ...didn't notice any clamp connections but I'll look harder!

Melanie

[SheffieldLass]

Originally Posted by Chris Yeates

hi M

this might help (from key to Tubaria in 1st edition of Nordic Macromycetes Vol 2):

Gills remaining yellow; cap 0.5-2 cm, conical to convex, not distinctly
hygrophanous , ochraceous; gills ± decurrent , stem at first pure white, then
ochraceous. Sp 5-6 x 2.5-3.5 um, very finely punctate (Fig. 583, 612). — On
the ground under Crataegus; autumn. FAD 127 C, Phil 158, R&H 465.
D: c. N: 2 Akh (Oslo). S: 1-2 o-r .
T. dispersa (Pers.) Sing. (=T. autochthona (Berk. & Br.) Sacc.)

best

Chris

Chris

Thanks again ... that definitely rules out T dispersa ... it didn't seem to match other people's photographs either, but the hawthorn connection meant I needed to rule it out by something other than casual appearance!

Melanie