Roger_TL45Y
@rogerhorton.bsky.social
Retired scientist. Prone to 🌱 fads: Artemisas|Calamints|Crataegus|Medicks|Poplars|Goldilocks|Solanum|Dipsacus|Ferns. FLS. Cambridge UK but often in Suffolk 📷: Wicken Fen wind pump. TL45Y =tetrad (2x2km square) round Cherry Hinton. ❤️ 🇪🇺 🇳🇱 & Berlin
Reposted by Roger_TL45Y
Wild teasel (Caprifolaceae: Dipsacus fullonum) is native to Eurasia but has been introduced throughout much of the world. It can be invasive and weedy, especially in disturbed areas. Seeds, however, can be an important winter food source for birds. Side Cut Metropark near Maumee Ohio, 27 Jun 2012.
February 4, 2026 at 3:05 PM
Wild teasel (Caprifolaceae: Dipsacus fullonum) is native to Eurasia but has been introduced throughout much of the world. It can be invasive and weedy, especially in disturbed areas. Seeds, however, can be an important winter food source for birds. Side Cut Metropark near Maumee Ohio, 27 Jun 2012.
Reposted by Roger_TL45Y
Callitula pyrrhogaster does seem to be in just about every tussocky piece of grassland you take a vacuum sampler to, which poses the question, given that they can't fly and the hosts don't fly in the parasitoid stage, how *do* they get about?
#wasps #Hymenoptera #VC55
#wasps #Hymenoptera #VC55
February 4, 2026 at 2:50 PM
Callitula pyrrhogaster does seem to be in just about every tussocky piece of grassland you take a vacuum sampler to, which poses the question, given that they can't fly and the hosts don't fly in the parasitoid stage, how *do* they get about?
#wasps #Hymenoptera #VC55
#wasps #Hymenoptera #VC55
Reposted by Roger_TL45Y
Learn eDNA and invasive species monitoring from leading European experts at the GuardIAS Summer School. Explore workflows, policy, and real monitoring applications.
Meet the trainers & register:
guardias.eu/meet-the-tra...
#GuardIAS #InvasiveAlienSpecies #IAS #InvasiveSpecies #BioInvasions
Meet the trainers & register:
guardias.eu/meet-the-tra...
#GuardIAS #InvasiveAlienSpecies #IAS #InvasiveSpecies #BioInvasions
February 4, 2026 at 9:30 AM
Learn eDNA and invasive species monitoring from leading European experts at the GuardIAS Summer School. Explore workflows, policy, and real monitoring applications.
Meet the trainers & register:
guardias.eu/meet-the-tra...
#GuardIAS #InvasiveAlienSpecies #IAS #InvasiveSpecies #BioInvasions
Meet the trainers & register:
guardias.eu/meet-the-tra...
#GuardIAS #InvasiveAlienSpecies #IAS #InvasiveSpecies #BioInvasions
Reposted by Roger_TL45Y
There’s loads for the whole family to enjoy this February with London Wildlife Trust 🐸🔍
Come along, get hands-on with nature, and have fun with our friendly nature experts 🌿✨
Find out what’s on via the link below👇
https://www.wildlondon.org.uk/events/winter
#LondonDaysOut
Come along, get hands-on with nature, and have fun with our friendly nature experts 🌿✨
Find out what’s on via the link below👇
https://www.wildlondon.org.uk/events/winter
#LondonDaysOut
February 4, 2026 at 11:00 AM
There’s loads for the whole family to enjoy this February with London Wildlife Trust 🐸🔍
Come along, get hands-on with nature, and have fun with our friendly nature experts 🌿✨
Find out what’s on via the link below👇
https://www.wildlondon.org.uk/events/winter
#LondonDaysOut
Come along, get hands-on with nature, and have fun with our friendly nature experts 🌿✨
Find out what’s on via the link below👇
https://www.wildlondon.org.uk/events/winter
#LondonDaysOut
Stained glass seen through and reflected in a clear glass window inside St Mary’s church #BuryStEdmunds.
#WindowsOnWednesday
#WindowsOnWednesday
February 4, 2026 at 7:43 AM
Stained glass seen through and reflected in a clear glass window inside St Mary’s church #BuryStEdmunds.
#WindowsOnWednesday
#WindowsOnWednesday
Reposted by Roger_TL45Y
Only 2 women served the Nazi German regime as test pilots, & they would end their dramatic lives on opposite sides of history…
Monday, 9 March, with drinks afterwards at the @whipplemuseum.bsky.social .
Do join us!
Monday, 9 March, with drinks afterwards at the @whipplemuseum.bsky.social .
Do join us!
February 3, 2026 at 6:12 PM
Only 2 women served the Nazi German regime as test pilots, & they would end their dramatic lives on opposite sides of history…
Monday, 9 March, with drinks afterwards at the @whipplemuseum.bsky.social .
Do join us!
Monday, 9 March, with drinks afterwards at the @whipplemuseum.bsky.social .
Do join us!
Reposted by Roger_TL45Y
Woodruff, Galium odoratum. Patch forming. Unbranched, 4-angled stems. 6-8 leaves per whorl with 25-60 forward pointing prickles per side. Stems erect, ending in a flat-topped leaf whorl. Leaves have hay or vanilla scent when crushed.
February 3, 2026 at 5:26 PM
Woodruff, Galium odoratum. Patch forming. Unbranched, 4-angled stems. 6-8 leaves per whorl with 25-60 forward pointing prickles per side. Stems erect, ending in a flat-topped leaf whorl. Leaves have hay or vanilla scent when crushed.
More signs of spring! Looking like badly brushed yellow teeth, the first tiny buds of Purple Toothwort, Lathraea clandestina, on Sheep's Green #Cambridge today.
#Botany
@bsbibotany.bsky.social
#Botany
@bsbibotany.bsky.social
February 3, 2026 at 5:03 PM
More signs of spring! Looking like badly brushed yellow teeth, the first tiny buds of Purple Toothwort, Lathraea clandestina, on Sheep's Green #Cambridge today.
#Botany
@bsbibotany.bsky.social
#Botany
@bsbibotany.bsky.social
A willow tree reduced to just a trunk at Ely with boats on the River Great Ouse beyond for #ThickTrunkTuesday
The stone in front says 'THE BOUNDARY OF TURNPIKE ROAD 1852' presumably the northern end of the historic route across the fens, Soham Causeway.
The stone in front says 'THE BOUNDARY OF TURNPIKE ROAD 1852' presumably the northern end of the historic route across the fens, Soham Causeway.
February 3, 2026 at 8:13 AM
A willow tree reduced to just a trunk at Ely with boats on the River Great Ouse beyond for #ThickTrunkTuesday
The stone in front says 'THE BOUNDARY OF TURNPIKE ROAD 1852' presumably the northern end of the historic route across the fens, Soham Causeway.
The stone in front says 'THE BOUNDARY OF TURNPIKE ROAD 1852' presumably the northern end of the historic route across the fens, Soham Causeway.
Reposted by Roger_TL45Y
Medieval ales were flavoured with wild plants. One was henbane - which is a hallucinogen. Why did they put this in ale? To find out listen to our History of Beer podcast: tinyurl.com/52v2mcuf #history #beer #ale #medievalhistory #herbs #apothecary
February 2, 2026 at 5:23 PM
Medieval ales were flavoured with wild plants. One was henbane - which is a hallucinogen. Why did they put this in ale? To find out listen to our History of Beer podcast: tinyurl.com/52v2mcuf #history #beer #ale #medievalhistory #herbs #apothecary
Reposted by Roger_TL45Y
Buffalo Bur (Solanum rostratum) growing out of the sidewalk of Moyamensing, shot on August 18th.
#Bloomscrolling #Wildflowers #SidewalkFlowers
#Bloomscrolling #Wildflowers #SidewalkFlowers
February 2, 2026 at 6:09 PM
Buffalo Bur (Solanum rostratum) growing out of the sidewalk of Moyamensing, shot on August 18th.
#Bloomscrolling #Wildflowers #SidewalkFlowers
#Bloomscrolling #Wildflowers #SidewalkFlowers
Reposted by Roger_TL45Y
#OTD
2nd February 1575
John Pankhurst, Bishop of Norwich died.
He became Bishop or Norwich in 1560 after he returned to England following Queen Mary I’s reign.
He was buried in the nave of Norwich Cathedral.
#JohnPankhurst #BishopofNorwich #Norwich #Norfolk #Tudors #History
2nd February 1575
John Pankhurst, Bishop of Norwich died.
He became Bishop or Norwich in 1560 after he returned to England following Queen Mary I’s reign.
He was buried in the nave of Norwich Cathedral.
#JohnPankhurst #BishopofNorwich #Norwich #Norfolk #Tudors #History
February 2, 2026 at 5:59 AM
#OTD
2nd February 1575
John Pankhurst, Bishop of Norwich died.
He became Bishop or Norwich in 1560 after he returned to England following Queen Mary I’s reign.
He was buried in the nave of Norwich Cathedral.
#JohnPankhurst #BishopofNorwich #Norwich #Norfolk #Tudors #History
2nd February 1575
John Pankhurst, Bishop of Norwich died.
He became Bishop or Norwich in 1560 after he returned to England following Queen Mary I’s reign.
He was buried in the nave of Norwich Cathedral.
#JohnPankhurst #BishopofNorwich #Norwich #Norfolk #Tudors #History
Just in time for Candlemas, Candlemas Lilies, in particular my 'Porlock 2'. #Candlemas #Imbolc #Galanthophile
February 2, 2026 at 7:53 PM
Just in time for Candlemas, Candlemas Lilies, in particular my 'Porlock 2'. #Candlemas #Imbolc #Galanthophile
Reposted by Roger_TL45Y
The updated list of Archbishops of Canterbury.
33/365
33/365
February 2, 2026 at 4:22 PM
The updated list of Archbishops of Canterbury.
33/365
33/365
If you are a member of The Tree
Register, or want to be, remember to go to their website and don’t fall for this scam email going round!! Note they forgot to fill in the [] fields. 🙄
treeregister.org
Register, or want to be, remember to go to their website and don’t fall for this scam email going round!! Note they forgot to fill in the [] fields. 🙄
treeregister.org
February 2, 2026 at 3:37 PM
If you are a member of The Tree
Register, or want to be, remember to go to their website and don’t fall for this scam email going round!! Note they forgot to fill in the [] fields. 🙄
treeregister.org
Register, or want to be, remember to go to their website and don’t fall for this scam email going round!! Note they forgot to fill in the [] fields. 🙄
treeregister.org
Reposted by Roger_TL45Y
Trumpington Meadows past, present and future. Talk by Iain Webb of the Wildlife Trust on Thursday 5th February. In person or online, all welcome.
February 2, 2026 at 3:03 PM
Trumpington Meadows past, present and future. Talk by Iain Webb of the Wildlife Trust on Thursday 5th February. In person or online, all welcome.
Hazel catkins and female flowers just right for its #JacobinDay
February 2, 2026 at 11:37 AM
Hazel catkins and female flowers just right for its #JacobinDay
Reposted by Roger_TL45Y
🌺 How do plants fine-tune hormone levels to shape flower organs like stamens?
Primary auxin response genes GH3s and DAO1 modulate stamen elongation in Arabidopsis thaliana and Solanum lycopersicum.
https://bit.ly/4pcqSvO
Primary auxin response genes GH3s and DAO1 modulate stamen elongation in Arabidopsis thaliana and Solanum lycopersicum.
https://bit.ly/4pcqSvO
February 2, 2026 at 8:00 AM
🌺 How do plants fine-tune hormone levels to shape flower organs like stamens?
Primary auxin response genes GH3s and DAO1 modulate stamen elongation in Arabidopsis thaliana and Solanum lycopersicum.
https://bit.ly/4pcqSvO
Primary auxin response genes GH3s and DAO1 modulate stamen elongation in Arabidopsis thaliana and Solanum lycopersicum.
https://bit.ly/4pcqSvO
A #moss covered roof in Ely though I suspect there’s a fringe of chickweed in the gutter. #MossMonday
February 2, 2026 at 11:01 AM
A #moss covered roof in Ely though I suspect there’s a fringe of chickweed in the gutter. #MossMonday
Reposted by Roger_TL45Y
🌿 What’s on this February? 🐦
A whole month of wildlife walks, creative workshops, inspiring talks and family-friendly nature events with The Wildlife Trust BCN 👇
A whole month of wildlife walks, creative workshops, inspiring talks and family-friendly nature events with The Wildlife Trust BCN 👇
February 2, 2026 at 10:44 AM
🌿 What’s on this February? 🐦
A whole month of wildlife walks, creative workshops, inspiring talks and family-friendly nature events with The Wildlife Trust BCN 👇
A whole month of wildlife walks, creative workshops, inspiring talks and family-friendly nature events with The Wildlife Trust BCN 👇
Spurge Laurel, Daphne laureola, growing out of a grave in Cherry Hinton churchyard #Cambridge. Very chalky soil and obviously disturbance!
🍒🏘️
#WildflowerHour
🍒🏘️
#WildflowerHour
February 1, 2026 at 8:45 PM
Spurge Laurel, Daphne laureola, growing out of a grave in Cherry Hinton churchyard #Cambridge. Very chalky soil and obviously disturbance!
🍒🏘️
#WildflowerHour
🍒🏘️
#WildflowerHour
February 1, 2026 at 8:37 PM
As it’s Sunday evening and there are lots of botanists around who may like #orchids here’s Dendrochilum cobbianum for you to count the flowers! Glasshouse at @cubotanicgarden.bsky.social 😉
February 1, 2026 at 8:11 PM
As it’s Sunday evening and there are lots of botanists around who may like #orchids here’s Dendrochilum cobbianum for you to count the flowers! Glasshouse at @cubotanicgarden.bsky.social 😉
Nine fading flowers from back streets of #BuryStEdmunds #Suffolk:
Groundsel, Daisy, Common Fumitory,
Shepherd's-purse, Yarrow, Red Dead-nettle,
Field Speedwell, Annual Mercury, Wild Clary,
…brightened up by Narrow-leaved Ragwort at the railway station.
#WildflowerHour #TheWinter10
Groundsel, Daisy, Common Fumitory,
Shepherd's-purse, Yarrow, Red Dead-nettle,
Field Speedwell, Annual Mercury, Wild Clary,
…brightened up by Narrow-leaved Ragwort at the railway station.
#WildflowerHour #TheWinter10
February 1, 2026 at 8:03 PM
Nine fading flowers from back streets of #BuryStEdmunds #Suffolk:
Groundsel, Daisy, Common Fumitory,
Shepherd's-purse, Yarrow, Red Dead-nettle,
Field Speedwell, Annual Mercury, Wild Clary,
…brightened up by Narrow-leaved Ragwort at the railway station.
#WildflowerHour #TheWinter10
Groundsel, Daisy, Common Fumitory,
Shepherd's-purse, Yarrow, Red Dead-nettle,
Field Speedwell, Annual Mercury, Wild Clary,
…brightened up by Narrow-leaved Ragwort at the railway station.
#WildflowerHour #TheWinter10
Reposted by Roger_TL45Y
Hazel catkins. Does anyone know why these ones have grown like this? I wondered if it was a gall but haven’t been able to find anything that looks like it. @bsbibotany.bsky.social @bsbiscotland.bsky.social @plantlifeintl.bsky.social #wildflowerhour
February 1, 2026 at 8:10 AM
Hazel catkins. Does anyone know why these ones have grown like this? I wondered if it was a gall but haven’t been able to find anything that looks like it. @bsbibotany.bsky.social @bsbiscotland.bsky.social @plantlifeintl.bsky.social #wildflowerhour