Dean Mac Cú Uladh
@dmac00.bsky.social
Botanist, bryologist and ecologist from Co. Down. Tá Gaedhlig agam.
Woodland ecology, oceanic biogeography and pollinators.
newrywildlife.com
Woodland ecology, oceanic biogeography and pollinators.
newrywildlife.com
This is an amazing record if this rare fungi that is closely linked to temperate rainforest. Not before observed in the SE of Ireland!! Wow
Several examples of Hazel gloves fungi found in a woodland in County Waterford recently. I've only ever seen these in the west of Ireland before.
January 4, 2026 at 6:54 PM
This is an amazing record if this rare fungi that is closely linked to temperate rainforest. Not before observed in the SE of Ireland!! Wow
Reposted by Dean Mac Cú Uladh
Scapania ornithopoides. Céad uair agam an speiceas seo a fheiceail agus an chéad suíomh dhó sna Mám Toirce cé go bhfuil roinnt maith cuntais dhó ó na beanna beola. Rud aláinn a bhfaca mé fhéin agus @timoceallaigh.bsky.social lá oíche nollaig
December 28, 2025 at 1:14 PM
Scapania ornithopoides. Céad uair agam an speiceas seo a fheiceail agus an chéad suíomh dhó sna Mám Toirce cé go bhfuil roinnt maith cuntais dhó ó na beanna beola. Rud aláinn a bhfaca mé fhéin agus @timoceallaigh.bsky.social lá oíche nollaig
New site record of Hymenophyllum tunbrigense for Co. Louth (H31) growing in a rocky woodland on a minor hill. Happy to find this one today. A very scarce species in the county.
@bsbiireland.bsky.social
@bsbibotany.bsky.social
#ferns #botany #filmyferns
@bsbiireland.bsky.social
@bsbibotany.bsky.social
#ferns #botany #filmyferns
December 30, 2025 at 7:09 PM
New site record of Hymenophyllum tunbrigense for Co. Louth (H31) growing in a rocky woodland on a minor hill. Happy to find this one today. A very scarce species in the county.
@bsbiireland.bsky.social
@bsbibotany.bsky.social
#ferns #botany #filmyferns
@bsbiireland.bsky.social
@bsbibotany.bsky.social
#ferns #botany #filmyferns
Reposted by Dean Mac Cú Uladh
Likely Rhabdoweisia crenulata growing at high altitude on a NE rock face. Another first for me and the maamturks/Mám toirce records it seems. Thanks @nimbosaecology.bsky.social for ID help
December 28, 2025 at 2:49 PM
Likely Rhabdoweisia crenulata growing at high altitude on a NE rock face. Another first for me and the maamturks/Mám toirce records it seems. Thanks @nimbosaecology.bsky.social for ID help
Dryopteris affinis s.s on my St Stephen’s Day walk yesterday. Every day is a good day for some fernology
I am pretty confident with this one
@bsbiireland.bsky.social @bsbibotany.bsky.social
#ferns #botany
I am pretty confident with this one
@bsbiireland.bsky.social @bsbibotany.bsky.social
#ferns #botany
December 27, 2025 at 11:20 AM
Dryopteris affinis s.s on my St Stephen’s Day walk yesterday. Every day is a good day for some fernology
I am pretty confident with this one
@bsbiireland.bsky.social @bsbibotany.bsky.social
#ferns #botany
I am pretty confident with this one
@bsbiireland.bsky.social @bsbibotany.bsky.social
#ferns #botany
Fontinalis squamosa from Bavan, Cooley Mountains, Co. Louth in upland boulder stream
Doesn’t seem to be previously recorded from this region
@bbsbryology.bsky.social
Doesn’t seem to be previously recorded from this region
@bbsbryology.bsky.social
December 20, 2025 at 6:53 PM
Fontinalis squamosa from Bavan, Cooley Mountains, Co. Louth in upland boulder stream
Doesn’t seem to be previously recorded from this region
@bbsbryology.bsky.social
Doesn’t seem to be previously recorded from this region
@bbsbryology.bsky.social
Reposted by Dean Mac Cú Uladh
Mosses love to decorate with slime molds. Northwest Territories, Canada.
#slime #fungifriends #myxo #moss #bryophyte #botany
#slime #fungifriends #myxo #moss #bryophyte #botany
December 19, 2025 at 1:15 PM
Mosses love to decorate with slime molds. Northwest Territories, Canada.
#slime #fungifriends #myxo #moss #bryophyte #botany
#slime #fungifriends #myxo #moss #bryophyte #botany
To round up my year of biological recording, here are my favourite finds from each month of 2025!
January - Jubula hutchinsiae
I re-found this colony recorded in 2004 in the Glen Stream, co. Down. A v interesting & unmistakable oceanic liverwort of humid wooded stream valleys
January - Jubula hutchinsiae
I re-found this colony recorded in 2004 in the Glen Stream, co. Down. A v interesting & unmistakable oceanic liverwort of humid wooded stream valleys
December 11, 2025 at 2:09 PM
To round up my year of biological recording, here are my favourite finds from each month of 2025!
January - Jubula hutchinsiae
I re-found this colony recorded in 2004 in the Glen Stream, co. Down. A v interesting & unmistakable oceanic liverwort of humid wooded stream valleys
January - Jubula hutchinsiae
I re-found this colony recorded in 2004 in the Glen Stream, co. Down. A v interesting & unmistakable oceanic liverwort of humid wooded stream valleys
Greenan Lough, Newry, Co. Down
These drumlin valleys contain lakes, fen and transition mire. Important habitats for scarce spp like Marsh St John’s Wort, Sphagnum contortum and many wetland birds.
Main issue = no public accessibility - I have not explored any of these wetlands properly
These drumlin valleys contain lakes, fen and transition mire. Important habitats for scarce spp like Marsh St John’s Wort, Sphagnum contortum and many wetland birds.
Main issue = no public accessibility - I have not explored any of these wetlands properly
November 29, 2025 at 1:08 PM
Greenan Lough, Newry, Co. Down
These drumlin valleys contain lakes, fen and transition mire. Important habitats for scarce spp like Marsh St John’s Wort, Sphagnum contortum and many wetland birds.
Main issue = no public accessibility - I have not explored any of these wetlands properly
These drumlin valleys contain lakes, fen and transition mire. Important habitats for scarce spp like Marsh St John’s Wort, Sphagnum contortum and many wetland birds.
Main issue = no public accessibility - I have not explored any of these wetlands properly
Reposted by Dean Mac Cú Uladh
"This is the first time we can say with certainty that European wildcats lived in prehistoric Ireland"
A stunning discovery and more evidence that there's a lot left to discover about Ireland's ecology!
www.rte.ie/news/munster...
A stunning discovery and more evidence that there's a lot left to discover about Ireland's ecology!
www.rte.ie/news/munster...
Wildcat bones found in Co Clare dated to 5,500 years ago
The first directly dated wildcat bones found in Ireland have been identified, confirming that the species inhabited the island more than 5,500 years ago.
www.rte.ie
November 28, 2025 at 9:03 AM
"This is the first time we can say with certainty that European wildcats lived in prehistoric Ireland"
A stunning discovery and more evidence that there's a lot left to discover about Ireland's ecology!
www.rte.ie/news/munster...
A stunning discovery and more evidence that there's a lot left to discover about Ireland's ecology!
www.rte.ie/news/munster...
This woodland site on the Armagh/louth border SW of Newry is begging for restoration. Bounded by forestry on both sides with a deep gorge between, supporting a nice array of species. Also an area brimming in local history, being one of the last Gaeltachtaí on east coast c. early 20th Century
November 28, 2025 at 10:34 AM
This woodland site on the Armagh/louth border SW of Newry is begging for restoration. Bounded by forestry on both sides with a deep gorge between, supporting a nice array of species. Also an area brimming in local history, being one of the last Gaeltachtaí on east coast c. early 20th Century
First record of Daltonia splachnoides for Co. Armagh (H37) from plantation on Camlough Mountain. Epiphytic on willow, associates were Lejeunea patens & Metzgeria consanguinea. Algal gloop a big issue though.
@bbsbryology.bsky.social
#bryophytes #moss #Ireland
@bbsbryology.bsky.social
#bryophytes #moss #Ireland
November 24, 2025 at 7:57 PM
First record of Daltonia splachnoides for Co. Armagh (H37) from plantation on Camlough Mountain. Epiphytic on willow, associates were Lejeunea patens & Metzgeria consanguinea. Algal gloop a big issue though.
@bbsbryology.bsky.social
#bryophytes #moss #Ireland
@bbsbryology.bsky.social
#bryophytes #moss #Ireland
Other cool Fermanagh/Cavan finds included Saxifraga hypnoides, Sticta limbata and slime mould Badhamia utricularis.
Also visited Shannon Pot, the source of the River Shannon in west Cavan
#botany #lichens #slimemould #ireland
Also visited Shannon Pot, the source of the River Shannon in west Cavan
#botany #lichens #slimemould #ireland
November 12, 2025 at 7:39 PM
Other cool Fermanagh/Cavan finds included Saxifraga hypnoides, Sticta limbata and slime mould Badhamia utricularis.
Also visited Shannon Pot, the source of the River Shannon in west Cavan
#botany #lichens #slimemould #ireland
Also visited Shannon Pot, the source of the River Shannon in west Cavan
#botany #lichens #slimemould #ireland
Neckera crispa growing as an epiphyte in a hazel temperate rainforest north of Cuilcagh, Co. Fermanagh.
Other niceties include Ctenidium molluscum and Breutelia chrysocoma
Other niceties include Ctenidium molluscum and Breutelia chrysocoma
November 12, 2025 at 6:51 PM
Neckera crispa growing as an epiphyte in a hazel temperate rainforest north of Cuilcagh, Co. Fermanagh.
Other niceties include Ctenidium molluscum and Breutelia chrysocoma
Other niceties include Ctenidium molluscum and Breutelia chrysocoma
A new site for Neckera pumila from willow on edge of Gortin Lakes, co. Tyrone
This colony was particularly robust
#bryophytes #moss
This colony was particularly robust
#bryophytes #moss
November 11, 2025 at 1:47 PM
A new site for Neckera pumila from willow on edge of Gortin Lakes, co. Tyrone
This colony was particularly robust
#bryophytes #moss
This colony was particularly robust
#bryophytes #moss
Reposted by Dean Mac Cú Uladh
First time seeing Tunbridge filmy fern (Hymenophyllum tunbrigens) in Omagh yesterday thanks to @dmac00.bsky.social. Such a beautiful fern!
November 9, 2025 at 2:22 PM
First time seeing Tunbridge filmy fern (Hymenophyllum tunbrigens) in Omagh yesterday thanks to @dmac00.bsky.social. Such a beautiful fern!
Some more habitat photos from Ness Country Park, Derry
Very impressed with this site and an unexpected hyper-humid microclimate. The Burntollet River was powerful
Very impressed with this site and an unexpected hyper-humid microclimate. The Burntollet River was powerful
November 4, 2025 at 10:33 AM
Some more habitat photos from Ness Country Park, Derry
Very impressed with this site and an unexpected hyper-humid microclimate. The Burntollet River was powerful
Very impressed with this site and an unexpected hyper-humid microclimate. The Burntollet River was powerful
First record of large leafy liverwort Bazzania trilobata for co Derry (H40) since 1834! Also growing alongside it was Hymenophyllum tunbrigense which is a new county site too.
Ness Country Park, Co. Derry.
@bsbiireland.bsky.social @bbsbryology.bsky.social
#bryophytes #ferns #botany
Ness Country Park, Co. Derry.
@bsbiireland.bsky.social @bbsbryology.bsky.social
#bryophytes #ferns #botany
November 3, 2025 at 8:18 PM
First record of large leafy liverwort Bazzania trilobata for co Derry (H40) since 1834! Also growing alongside it was Hymenophyllum tunbrigense which is a new county site too.
Ness Country Park, Co. Derry.
@bsbiireland.bsky.social @bbsbryology.bsky.social
#bryophytes #ferns #botany
Ness Country Park, Co. Derry.
@bsbiireland.bsky.social @bbsbryology.bsky.social
#bryophytes #ferns #botany
These fragments of hazel woodlands around South Armagh are common enough, and always severely overgrazed. I’ve noted several scarce species from them but they are entirely unprotected. The hilly topography and hard porphyritic granophyre are the only things keeping them alive.
October 28, 2025 at 10:56 AM
These fragments of hazel woodlands around South Armagh are common enough, and always severely overgrazed. I’ve noted several scarce species from them but they are entirely unprotected. The hilly topography and hard porphyritic granophyre are the only things keeping them alive.
Reposted by Dean Mac Cú Uladh
Not my usual post type but my friends sister is currently battling cancer, if you can afford to give at all or share. I appreciate there are so many good causes to give your money to at the moment but just in case. Duine álainn í agus maithir go triúr. Grma!
www.gofundme.com/f/cunamh-do-...
www.gofundme.com/f/cunamh-do-...
Donate to Cúnamh do Fionnuala, organized by Geroldine Gannon
Dia dhaoibh, a chairde,
Tá tús curtha againn leis an bhfeachtas bailithe airgid seo le grá agus… Geroldine Gannon needs your support for Cúnamh do Fionnuala
www.gofundme.com
October 27, 2025 at 10:42 AM
Not my usual post type but my friends sister is currently battling cancer, if you can afford to give at all or share. I appreciate there are so many good causes to give your money to at the moment but just in case. Duine álainn í agus maithir go triúr. Grma!
www.gofundme.com/f/cunamh-do-...
www.gofundme.com/f/cunamh-do-...
Lovely lichens from Ards Forest Park, Donegal
Lobaria pulmonaria & Pannaria rubiginosa was locally abundant, even on young trees. Pyrenula macrospora was the dominant crustose lichen on ash
Other lichens included Pectenia atlantica, Lobarina scrobiculata & Ricasolia virens
#lichens #fungifriends
Lobaria pulmonaria & Pannaria rubiginosa was locally abundant, even on young trees. Pyrenula macrospora was the dominant crustose lichen on ash
Other lichens included Pectenia atlantica, Lobarina scrobiculata & Ricasolia virens
#lichens #fungifriends
October 22, 2025 at 5:37 PM
Lovely lichens from Ards Forest Park, Donegal
Lobaria pulmonaria & Pannaria rubiginosa was locally abundant, even on young trees. Pyrenula macrospora was the dominant crustose lichen on ash
Other lichens included Pectenia atlantica, Lobarina scrobiculata & Ricasolia virens
#lichens #fungifriends
Lobaria pulmonaria & Pannaria rubiginosa was locally abundant, even on young trees. Pyrenula macrospora was the dominant crustose lichen on ash
Other lichens included Pectenia atlantica, Lobarina scrobiculata & Ricasolia virens
#lichens #fungifriends
March in Warrenpoint County Down today with Carlingford Lough Keepers demanding for clean fresh air and an end to industrial malpractice!
People and Planet before Profit!!
People and Planet before Profit!!
October 18, 2025 at 4:41 PM
March in Warrenpoint County Down today with Carlingford Lough Keepers demanding for clean fresh air and an end to industrial malpractice!
People and Planet before Profit!!
People and Planet before Profit!!
4th Irish record of Endoantria benetecta and 2nd for Co. Fermanagh (H33) - Sliabh Beatha region
Little fragments of temperate rainforest on border between east Fermanagh and south Tyrone along the Colebrook River
#bryophytes #fungifriends #ireland #temperaterainforest #woodland
Little fragments of temperate rainforest on border between east Fermanagh and south Tyrone along the Colebrook River
#bryophytes #fungifriends #ireland #temperaterainforest #woodland
October 8, 2025 at 4:49 PM
4th Irish record of Endoantria benetecta and 2nd for Co. Fermanagh (H33) - Sliabh Beatha region
Little fragments of temperate rainforest on border between east Fermanagh and south Tyrone along the Colebrook River
#bryophytes #fungifriends #ireland #temperaterainforest #woodland
Little fragments of temperate rainforest on border between east Fermanagh and south Tyrone along the Colebrook River
#bryophytes #fungifriends #ireland #temperaterainforest #woodland
Moody blues over Loch Cairlinn today and a strong high tide. Made Rostrevor Oakwood extra atmospheric
October 7, 2025 at 3:10 PM
Moody blues over Loch Cairlinn today and a strong high tide. Made Rostrevor Oakwood extra atmospheric
Storm Amy illustrated why the marshy lowlands of Abhainn Ghleann Rí to the north of Newry are floodplains!
I have spotted lapwing in the past along the towpath - now the fields are drained and electric green from slurry. The river and canal are eutrophic as a result. Nice to see corr éisc still.
I have spotted lapwing in the past along the towpath - now the fields are drained and electric green from slurry. The river and canal are eutrophic as a result. Nice to see corr éisc still.
October 6, 2025 at 4:38 PM
Storm Amy illustrated why the marshy lowlands of Abhainn Ghleann Rí to the north of Newry are floodplains!
I have spotted lapwing in the past along the towpath - now the fields are drained and electric green from slurry. The river and canal are eutrophic as a result. Nice to see corr éisc still.
I have spotted lapwing in the past along the towpath - now the fields are drained and electric green from slurry. The river and canal are eutrophic as a result. Nice to see corr éisc still.