Jenny Seawright
@jennysea.bsky.social
Wildlife allotment, lichens, botany, moths, biodiversity. Websites www.irishwildflowers.ie, www.irishlichens.ie, www.irishmoths.net and www.dorsetnature.co.uk
Another bryophilous fungus query - this one either on Frullania sp. or on the mould over the 15 year old lichen specimen (from SW Ireland). Probably conidia as no asci seen, green, 5-septate, 29-39 x 5.5-7 µm.
Looking on bryophilous.co.uk Ilyonectria sp. looks probable? @ilichenmoss2.bsky.social
Looking on bryophilous.co.uk Ilyonectria sp. looks probable? @ilichenmoss2.bsky.social
November 22, 2025 at 4:09 PM
Another bryophilous fungus query - this one either on Frullania sp. or on the mould over the 15 year old lichen specimen (from SW Ireland). Probably conidia as no asci seen, green, 5-septate, 29-39 x 5.5-7 µm.
Looking on bryophilous.co.uk Ilyonectria sp. looks probable? @ilichenmoss2.bsky.social
Looking on bryophilous.co.uk Ilyonectria sp. looks probable? @ilichenmoss2.bsky.social
2/2 Not very successful attempt at host images
November 22, 2025 at 1:46 PM
2/2 Not very successful attempt at host images
1/2. Perithecia of a bryophilous fungus on possibly Diplophyllum in an old Bunodophorum melanocarpon specimen from SW Ireland (2009). Spores green-brown, muriform with 3-5 transverse septa, 20-25 x 7-10 µm, asci ?8-spored.
@ilichenmoss2.bsky.social
(2/2 with attempt at host images)
@ilichenmoss2.bsky.social
(2/2 with attempt at host images)
November 22, 2025 at 1:44 PM
1/2. Perithecia of a bryophilous fungus on possibly Diplophyllum in an old Bunodophorum melanocarpon specimen from SW Ireland (2009). Spores green-brown, muriform with 3-5 transverse septa, 20-25 x 7-10 µm, asci ?8-spored.
@ilichenmoss2.bsky.social
(2/2 with attempt at host images)
@ilichenmoss2.bsky.social
(2/2 with attempt at host images)
Dorset UK - Didymellopsis collematum , perithecia lichenicolous on Collema tenax v. ceranoides. Asci to 100 x 15 µm, spores hyaline, 1-septate, 22-25(-27) x 5-7 µm.
Abundant on drive where I park my car - a bit of thallus about the size of my thumbnail had possibly 50 perithecia on it! #lichenGBI
Abundant on drive where I park my car - a bit of thallus about the size of my thumbnail had possibly 50 perithecia on it! #lichenGBI
November 17, 2025 at 5:30 PM
Dorset UK - Didymellopsis collematum , perithecia lichenicolous on Collema tenax v. ceranoides. Asci to 100 x 15 µm, spores hyaline, 1-septate, 22-25(-27) x 5-7 µm.
Abundant on drive where I park my car - a bit of thallus about the size of my thumbnail had possibly 50 perithecia on it! #lichenGBI
Abundant on drive where I park my car - a bit of thallus about the size of my thumbnail had possibly 50 perithecia on it! #lichenGBI
October 26, 2025 at 12:09 PM
#lichenGBI
Unexpected on Larch twigs covered with Physcia tenella and Xanthoria parietina - a solitary Teloschistes chrysophthalmos! #lichen
Unexpected on Larch twigs covered with Physcia tenella and Xanthoria parietina - a solitary Teloschistes chrysophthalmos! #lichen
October 23, 2025 at 12:26 PM
#lichenGBI
Unexpected on Larch twigs covered with Physcia tenella and Xanthoria parietina - a solitary Teloschistes chrysophthalmos! #lichen
Unexpected on Larch twigs covered with Physcia tenella and Xanthoria parietina - a solitary Teloschistes chrysophthalmos! #lichen
#LichenGBI
Houseboat deck on lignum, thallus +/- sorediate, K+yellow, C+ orange, UV+ orange-brown. Pale brown apothecia, some pruinose, spores 8-13(-15) x 4.5-5 µm. Possibly very fertile Lecanora expallens but KUV(wet)+yellowish instead of bright green?
@aspenecology.com, @larkinlichen.bsky.social
Houseboat deck on lignum, thallus +/- sorediate, K+yellow, C+ orange, UV+ orange-brown. Pale brown apothecia, some pruinose, spores 8-13(-15) x 4.5-5 µm. Possibly very fertile Lecanora expallens but KUV(wet)+yellowish instead of bright green?
@aspenecology.com, @larkinlichen.bsky.social
August 16, 2025 at 4:35 PM
#LichenGBI
Houseboat deck on lignum, thallus +/- sorediate, K+yellow, C+ orange, UV+ orange-brown. Pale brown apothecia, some pruinose, spores 8-13(-15) x 4.5-5 µm. Possibly very fertile Lecanora expallens but KUV(wet)+yellowish instead of bright green?
@aspenecology.com, @larkinlichen.bsky.social
Houseboat deck on lignum, thallus +/- sorediate, K+yellow, C+ orange, UV+ orange-brown. Pale brown apothecia, some pruinose, spores 8-13(-15) x 4.5-5 µm. Possibly very fertile Lecanora expallens but KUV(wet)+yellowish instead of bright green?
@aspenecology.com, @larkinlichen.bsky.social
Oh then again that only applies if you're accessing posts with adult content, rather than for everyone!
July 10, 2025 at 8:53 PM
Oh then again that only applies if you're accessing posts with adult content, rather than for everyone!
Struggling to identify photobiont in this C- #lichenGBI on twig, not nutrient-enriched. Apothecia and spores fit both Lecania naegelii (C-, photobiont chlorococcoid, cells 6–16 μm) or Micarea peliocarpa (C± red, photobiont micareoid, cells 4-8 μm wide) @aspenecology.com @larkinlichen.bsky.social
July 9, 2025 at 11:03 AM
Struggling to identify photobiont in this C- #lichenGBI on twig, not nutrient-enriched. Apothecia and spores fit both Lecania naegelii (C-, photobiont chlorococcoid, cells 6–16 μm) or Micarea peliocarpa (C± red, photobiont micareoid, cells 4-8 μm wide) @aspenecology.com @larkinlichen.bsky.social
#LichenGBI
A #lichenicolous fungus on 3 different Arthonia radiata thalli - but the spores (c.10-13 x 2.5-3 µm) appear too small for Stigmidium arthoniae (17-23 x 4-5 µm). Once again at a loss as I've checked the 2010 Draft Keys and Arthonia LFs in LGBI3 without success! @fayrnhawk.bsky.social
A #lichenicolous fungus on 3 different Arthonia radiata thalli - but the spores (c.10-13 x 2.5-3 µm) appear too small for Stigmidium arthoniae (17-23 x 4-5 µm). Once again at a loss as I've checked the 2010 Draft Keys and Arthonia LFs in LGBI3 without success! @fayrnhawk.bsky.social
June 13, 2025 at 9:12 PM
#LichenGBI
A #lichenicolous fungus on 3 different Arthonia radiata thalli - but the spores (c.10-13 x 2.5-3 µm) appear too small for Stigmidium arthoniae (17-23 x 4-5 µm). Once again at a loss as I've checked the 2010 Draft Keys and Arthonia LFs in LGBI3 without success! @fayrnhawk.bsky.social
A #lichenicolous fungus on 3 different Arthonia radiata thalli - but the spores (c.10-13 x 2.5-3 µm) appear too small for Stigmidium arthoniae (17-23 x 4-5 µm). Once again at a loss as I've checked the 2010 Draft Keys and Arthonia LFs in LGBI3 without success! @fayrnhawk.bsky.social
#LichenGBI
Lecideine apothecia I thought were Catillaria nigroclavata until checked.
Spores (1-)3 septate 7-12 x 2-3 µm, a few paraphyses had swollen dark caps (ruled out Micarea). Keyed to Lecania and then L.naegelii - but spores too wide! Any thoughts @aspenecology.com @larkinlichen.bsky.social
Lecideine apothecia I thought were Catillaria nigroclavata until checked.
Spores (1-)3 septate 7-12 x 2-3 µm, a few paraphyses had swollen dark caps (ruled out Micarea). Keyed to Lecania and then L.naegelii - but spores too wide! Any thoughts @aspenecology.com @larkinlichen.bsky.social
June 12, 2025 at 9:56 PM
#LichenGBI
Lecideine apothecia I thought were Catillaria nigroclavata until checked.
Spores (1-)3 septate 7-12 x 2-3 µm, a few paraphyses had swollen dark caps (ruled out Micarea). Keyed to Lecania and then L.naegelii - but spores too wide! Any thoughts @aspenecology.com @larkinlichen.bsky.social
Lecideine apothecia I thought were Catillaria nigroclavata until checked.
Spores (1-)3 septate 7-12 x 2-3 µm, a few paraphyses had swollen dark caps (ruled out Micarea). Keyed to Lecania and then L.naegelii - but spores too wide! Any thoughts @aspenecology.com @larkinlichen.bsky.social
If this is the same map that @catframpton.bsky.social has been commenting about on Twitter it doesn't sound either accurate or reliable!
May 14, 2025 at 6:50 PM
If this is the same map that @catframpton.bsky.social has been commenting about on Twitter it doesn't sound either accurate or reliable!
Or have I been a complete eejit and its Lecania naeglii (which would make sense of the spores)?
April 29, 2025 at 5:13 PM
Or have I been a complete eejit and its Lecania naeglii (which would make sense of the spores)?
#LichenGBI
2/2 LGBI2 and Alan Orange 'Pyrenocarps' keys got me to Anisomeridium but spores and K+ colour wrong. Considered Porina byssophila but thallus and K+ colour wrong - and many spores slightly curved. Missing something!
@aspenecology.com @northernhills.bsky.social @larkinlichen.bsky.social
2/2 LGBI2 and Alan Orange 'Pyrenocarps' keys got me to Anisomeridium but spores and K+ colour wrong. Considered Porina byssophila but thallus and K+ colour wrong - and many spores slightly curved. Missing something!
@aspenecology.com @northernhills.bsky.social @larkinlichen.bsky.social
April 29, 2025 at 5:06 PM
#LichenGBI
2/2 LGBI2 and Alan Orange 'Pyrenocarps' keys got me to Anisomeridium but spores and K+ colour wrong. Considered Porina byssophila but thallus and K+ colour wrong - and many spores slightly curved. Missing something!
@aspenecology.com @northernhills.bsky.social @larkinlichen.bsky.social
2/2 LGBI2 and Alan Orange 'Pyrenocarps' keys got me to Anisomeridium but spores and K+ colour wrong. Considered Porina byssophila but thallus and K+ colour wrong - and many spores slightly curved. Missing something!
@aspenecology.com @northernhills.bsky.social @larkinlichen.bsky.social
#LichenGBI
1/2 Can't make sense of black perithecia with slightly pointed apices on Oak twig. Under microscope K+ bluish-green, spores (1-)3 septate, 15-22 x 4.5-5 µm, conidia c5(-7)x2 (but no obvious pycnidia).
Any thoughts @aspenecology.com @northernhills.bsky.social @larkinlichen.bsky.social
1/2 Can't make sense of black perithecia with slightly pointed apices on Oak twig. Under microscope K+ bluish-green, spores (1-)3 septate, 15-22 x 4.5-5 µm, conidia c5(-7)x2 (but no obvious pycnidia).
Any thoughts @aspenecology.com @northernhills.bsky.social @larkinlichen.bsky.social
April 29, 2025 at 4:59 PM
#LichenGBI
1/2 Can't make sense of black perithecia with slightly pointed apices on Oak twig. Under microscope K+ bluish-green, spores (1-)3 septate, 15-22 x 4.5-5 µm, conidia c5(-7)x2 (but no obvious pycnidia).
Any thoughts @aspenecology.com @northernhills.bsky.social @larkinlichen.bsky.social
1/2 Can't make sense of black perithecia with slightly pointed apices on Oak twig. Under microscope K+ bluish-green, spores (1-)3 septate, 15-22 x 4.5-5 µm, conidia c5(-7)x2 (but no obvious pycnidia).
Any thoughts @aspenecology.com @northernhills.bsky.social @larkinlichen.bsky.social
#lichen #lichenGBI
Just wondering if anyone knows the identity of the lichen in this photograph at the start of LGBI3, Volume 35 Ramalinaceae?
britishlichensociety.org.uk/sites/defaul...
Just wondering if anyone knows the identity of the lichen in this photograph at the start of LGBI3, Volume 35 Ramalinaceae?
britishlichensociety.org.uk/sites/defaul...
April 18, 2025 at 4:25 PM
#lichen #lichenGBI
Just wondering if anyone knows the identity of the lichen in this photograph at the start of LGBI3, Volume 35 Ramalinaceae?
britishlichensociety.org.uk/sites/defaul...
Just wondering if anyone knows the identity of the lichen in this photograph at the start of LGBI3, Volume 35 Ramalinaceae?
britishlichensociety.org.uk/sites/defaul...
Thanks Anthony - yes, corticolous and I'd agree many corticolous P. aenea records are probably byssophila. Oddly enough I'm finding quite a bit of byssophila on twigs and branches but haven't found any P. aenea recently!
Often its quite distinctive (images below), but not always!
Often its quite distinctive (images below), but not always!
April 17, 2025 at 5:23 PM
Thanks Anthony - yes, corticolous and I'd agree many corticolous P. aenea records are probably byssophila. Oddly enough I'm finding quite a bit of byssophila on twigs and branches but haven't found any P. aenea recently!
Often its quite distinctive (images below), but not always!
Often its quite distinctive (images below), but not always!
#lichenGBI
Found corticolous Porina byssophila several times recently, but always with a K+ blue-grey or blue-green reaction in involucrellum.
This specimen had a paler thallus, no K+ bluish reaction but spores were 3-5(-6) septate, 20-24 x 4-5 µm - but still P. byssophila? @aspenecology.com
Found corticolous Porina byssophila several times recently, but always with a K+ blue-grey or blue-green reaction in involucrellum.
This specimen had a paler thallus, no K+ bluish reaction but spores were 3-5(-6) septate, 20-24 x 4-5 µm - but still P. byssophila? @aspenecology.com
April 15, 2025 at 3:10 PM
#lichenGBI
Found corticolous Porina byssophila several times recently, but always with a K+ blue-grey or blue-green reaction in involucrellum.
This specimen had a paler thallus, no K+ bluish reaction but spores were 3-5(-6) septate, 20-24 x 4-5 µm - but still P. byssophila? @aspenecology.com
Found corticolous Porina byssophila several times recently, but always with a K+ blue-grey or blue-green reaction in involucrellum.
This specimen had a paler thallus, no K+ bluish reaction but spores were 3-5(-6) septate, 20-24 x 4-5 µm - but still P. byssophila? @aspenecology.com
#lichenGBI
Bacidina(?) on fencepost, solitary whitish / pinky-brown apothecia. Hymenium yellowish, K-, spores to 7-septate, 25-30(-37) x 1.5(-2) µm and possibly +/- coiled in asci.
Post covered with yellow-greenish soredia/alga so not clear what might be the thallus. Any thoughts @aspenecology.com?
Bacidina(?) on fencepost, solitary whitish / pinky-brown apothecia. Hymenium yellowish, K-, spores to 7-septate, 25-30(-37) x 1.5(-2) µm and possibly +/- coiled in asci.
Post covered with yellow-greenish soredia/alga so not clear what might be the thallus. Any thoughts @aspenecology.com?
March 29, 2025 at 6:30 PM
#lichenGBI
Bacidina(?) on fencepost, solitary whitish / pinky-brown apothecia. Hymenium yellowish, K-, spores to 7-septate, 25-30(-37) x 1.5(-2) µm and possibly +/- coiled in asci.
Post covered with yellow-greenish soredia/alga so not clear what might be the thallus. Any thoughts @aspenecology.com?
Bacidina(?) on fencepost, solitary whitish / pinky-brown apothecia. Hymenium yellowish, K-, spores to 7-septate, 25-30(-37) x 1.5(-2) µm and possibly +/- coiled in asci.
Post covered with yellow-greenish soredia/alga so not clear what might be the thallus. Any thoughts @aspenecology.com?
On twig - apothecium with flat, concave apex, no photobiont.
Spores green > brown, (1-)3(-4) sept, few with vertical septum, 22-25 x 10-12 µm. Some septa pale.
Spore appendage c. half spore length, leaving truncate base.
Non-lichenised but with BLS number? @aspenecology.com @fayrnhawk.bsky.social
Spores green > brown, (1-)3(-4) sept, few with vertical septum, 22-25 x 10-12 µm. Some septa pale.
Spore appendage c. half spore length, leaving truncate base.
Non-lichenised but with BLS number? @aspenecology.com @fayrnhawk.bsky.social
March 25, 2025 at 1:53 PM
On twig - apothecium with flat, concave apex, no photobiont.
Spores green > brown, (1-)3(-4) sept, few with vertical septum, 22-25 x 10-12 µm. Some septa pale.
Spore appendage c. half spore length, leaving truncate base.
Non-lichenised but with BLS number? @aspenecology.com @fayrnhawk.bsky.social
Spores green > brown, (1-)3(-4) sept, few with vertical septum, 22-25 x 10-12 µm. Some septa pale.
Spore appendage c. half spore length, leaving truncate base.
Non-lichenised but with BLS number? @aspenecology.com @fayrnhawk.bsky.social
#lichenGBI
Three different specimens on sunny, exposed fence post, all with curved spores +/- coiled in the asci. Spores to 7-septate, 17-22(-24) x 1.5-2.5 µm.
Keep coming back to Scoliciosporum umbrinum but not sure I haven't missed something obvious? @aspenecology.com @larkinlichen.bsky.social
Three different specimens on sunny, exposed fence post, all with curved spores +/- coiled in the asci. Spores to 7-septate, 17-22(-24) x 1.5-2.5 µm.
Keep coming back to Scoliciosporum umbrinum but not sure I haven't missed something obvious? @aspenecology.com @larkinlichen.bsky.social
March 20, 2025 at 6:13 PM
#lichenGBI
Three different specimens on sunny, exposed fence post, all with curved spores +/- coiled in the asci. Spores to 7-septate, 17-22(-24) x 1.5-2.5 µm.
Keep coming back to Scoliciosporum umbrinum but not sure I haven't missed something obvious? @aspenecology.com @larkinlichen.bsky.social
Three different specimens on sunny, exposed fence post, all with curved spores +/- coiled in the asci. Spores to 7-septate, 17-22(-24) x 1.5-2.5 µm.
Keep coming back to Scoliciosporum umbrinum but not sure I haven't missed something obvious? @aspenecology.com @larkinlichen.bsky.social
#LichenGBI
Well, it took a while but I think I finally got there!
Micarea doliiformis pycnidia on a old pine stump, the conidia hyaline, c.2.5-3 x 1-1.5 µm. Only come across it once before and that time it was fertile
Well, it took a while but I think I finally got there!
Micarea doliiformis pycnidia on a old pine stump, the conidia hyaline, c.2.5-3 x 1-1.5 µm. Only come across it once before and that time it was fertile
March 3, 2025 at 12:05 AM
#LichenGBI
Well, it took a while but I think I finally got there!
Micarea doliiformis pycnidia on a old pine stump, the conidia hyaline, c.2.5-3 x 1-1.5 µm. Only come across it once before and that time it was fertile
Well, it took a while but I think I finally got there!
Micarea doliiformis pycnidia on a old pine stump, the conidia hyaline, c.2.5-3 x 1-1.5 µm. Only come across it once before and that time it was fertile
Looks really interesting, and decidedly lichenicolous! Any chance of examining under a microscope? Definitely worth posting on the FB Lichenicolous fungi 2.0 page: www.facebook.com/groups/46718...
February 27, 2025 at 10:47 PM
Looks really interesting, and decidedly lichenicolous! Any chance of examining under a microscope? Definitely worth posting on the FB Lichenicolous fungi 2.0 page: www.facebook.com/groups/46718...
Oops, macro photo would be useful, apothecia with distinctive pinky-brown discs:
February 18, 2025 at 2:09 PM
Oops, macro photo would be useful, apothecia with distinctive pinky-brown discs:
I don't know if there's any recent molecular detail but Neil Sanderson would be the person to ask.
If it's any help micrographs under polarised light below at x10 (100) magnification, sections in water:
If it's any help micrographs under polarised light below at x10 (100) magnification, sections in water:
February 18, 2025 at 2:06 PM
I don't know if there's any recent molecular detail but Neil Sanderson would be the person to ask.
If it's any help micrographs under polarised light below at x10 (100) magnification, sections in water:
If it's any help micrographs under polarised light below at x10 (100) magnification, sections in water: