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Dr David Cockburn

@nature-in-charge

Volunteer ecologist at Broughton Sanctuary and retired geneticist.

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16.11.2024
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Latest posts by Dr David Cockburn @nature-in-charge

Hi Moira, this looks very much like Bryum dichotomum - if you were to squeeze out some of those axillary bulbils you should see well-developed leaf primordia under the microscope. B. argentum usually has paler silvery more compact shoots.

18.02.2026 09:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

This is the sort of exciting species I hope might respond to pig disturbance at Broughton Sanctuary, which includes drumlins. 🀞🏻I wonder how many years...

16.02.2026 11:30 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
In situ

In situ

Post image Spherical spores 3.5-4.9ΞΌm

Spherical spores 3.5-4.9ΞΌm

Conidial cells ~5x5ΞΌm

Conidial cells ~5x5ΞΌm

An erumpent fungus on twiggy low branch of Beech in wet woodland near Skipton, UK (16/01/26). Black colouration nicely contrasts the adjacent bright green lichens and bryophytes. Conidia/asci ~12-15 cells long from around the mini 'volcanos' (~2-5mm). Unidentified thus far!
#fungifriends

13.02.2026 10:11 πŸ‘ 10 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Fabulous. And good luck beavers - there's a lot of nature needing to be restored.

12.02.2026 17:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Moss in situ; capsules have dark setae and conical lids

Moss in situ; capsules have dark setae and conical lids

Leaf; ~1mm, similar to Hypnum resupinatum

Leaf; ~1mm, similar to Hypnum resupinatum

Capsule outer surface (left) and inner surface (right)

Capsule outer surface (left) and inner surface (right)

Capsule exothecial cells with uniformly thickened cell walls

Capsule exothecial cells with uniformly thickened cell walls

Pylaisia polyantha. An attractive silky epiphyte, once an infrequent species but doing well at Broughton Sanctuary, Skipton - now seen in 3 wet woods. Slender erect capsules on dark setae, conical lids and capsule exothecial cells have uniformly thickened cell walls. @bbsbryology.bsky.social

11.02.2026 20:32 πŸ‘ 12 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1

Very interesting

11.02.2026 07:30 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Great spot, that's so hard to see!

07.02.2026 20:58 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Let's not beat about the bush. Our security is in grave danger because of exploitation of the natural world. Once we were blind to the effects but not any more. Time for leadership from 'leaders' - our security should be their no. 1 priority. Thanks @georgemonbiot.bsky.social for your tireless work.

28.01.2026 09:09 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Lovely! I've been doing something similar

05.01.2026 17:16 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Garlic Mustard, my first and favourite plant for #NewYearPlantHunt. Other highlights were a glorious Turkeytail Fungus and icy geometric frost crystals.
#Wildflowerhour

04.01.2026 21:47 πŸ‘ 17 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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'A Tale of Two Trametes', today on log pile at Broughton Sanctuary, Skipton. Gloriously coloured Turkeytail (T. Versicolor) and algae-decorated Lumpy Bracket (T. gibbosa)
#fungifriends

04.01.2026 17:03 πŸ‘ 7 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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I've not found this intriguing one before - but spotted it today on cones under the Scot's Pine in my Leeds garden. The Earpick Fungus (Auriscalpium vulgare) occupies a little niche of its own, feeding on cones, and has a quirky solution to spore dispersal.
#fungifriends @yorkswildlife.bsky.social

17.11.2025 17:45 πŸ‘ 20 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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And at the mouth of the burrow - Pohlia lutescens - nice pale green glossy shoots, but the distinctive feature for identification is knobbly tubers on the rhizomes. (Success here after failure on previous occasions!)
2/2

15.11.2025 10:50 πŸ‘ 8 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Delighted that a rabbit burrow at Broughton Sanctuary, Skipton, produced 2 nice finds (6/11/25):
Schistostega pennata - Goblin Gold; with highly reflective protonema, shoots with leaves in 2 ranks and long leaf insertions
@bbsbryology.bsky.social
1/2

15.11.2025 10:50 πŸ‘ 26 πŸ” 4 πŸ’¬ 2 πŸ“Œ 0

The most important and frighteningly urgent issue of our time. Wishing you well with spreading support. πŸ€žπŸ»πŸ€žπŸ»πŸ€žπŸ»πŸŒΏπŸŒ³πŸŒ»πŸ„πŸ•·οΈπŸͺ²πŸŒ‘οΈπŸŒ‘οΈπŸŒ‘οΈπŸ“ˆ

03.11.2025 11:54 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Just watched the Breakfast Live from yesterday. Nice one 😊

31.10.2025 07:41 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
leaf upperside

leaf upperside

leaf lowerside

leaf lowerside

conidia

conidia

2 conidia apparently septate

2 conidia apparently septate

A fungus causing leaf spots - Ramularia glechomatis (likely ID); leisons ~4mm wide with white fruiting structures on leaf underside; conidia in chains and measuring 10.5-15.5 x 3.4-4.1ΞΌm - some apparently septate
#FungiFriends
3/3

30.10.2025 14:33 πŸ‘ 8 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
pustules on lower leaf surface

pustules on lower leaf surface

close-up of pustle, ~2mm wide

close-up of pustle, ~2mm wide

teliospores

teliospores

teliospore

teliospore

A fungus causing leaf pustules - Puccinia glechomatis; leisons ~2-3mm wide and with brown telia on leaf underside; teliospores brown and 2-celled
#FungiFriends
2/3

30.10.2025 14:33 πŸ‘ 8 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
galls on leaf upperside, hairy and ~3mm high

galls on leaf upperside, hairy and ~3mm high

galls on leaf upperside, hairy and ~3mm high

galls on leaf upperside, hairy and ~3mm high

I took a close look at Ground-ivy - Glechoma hederaceae in my Leeds garden and found 3 pathogens:
A leaf gall caused by Rondaniola bursaria, a gall midge larva (family Cecidomyiidae); hairy gall ~3mm high
@bsbibotany.bsky.social @ynuorg.bsky.social @dipteristsforum.bsky.social
1/3

30.10.2025 14:33 πŸ‘ 20 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0

I'm really enjoying this book. Like a special bar of chocolate, I nibble a few pages each day - instead of devouring it all at once. (I also love the feel of the board cover.)

29.10.2025 21:30 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Looks like with Ptilium crista-castrensis πŸ’š

27.10.2025 18:23 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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New in my garden and blooming unashamedly this week in disturbed ground is Black Nightshade, Solanum nigrum.
#WildflowerHour @bsbibotany.bsky.social

26.10.2025 20:22 πŸ‘ 18 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
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Spangle Waxcap in short grassland at Broughton Sanctuary, beautiful texture and colour to the cap and occasional spores have a slight constriction. Top of the stem is not necessarily red.
#WildFungiHour #WildflowerHour

26.10.2025 20:14 πŸ‘ 7 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Should add - I've got no idea really, I've never seen it, and because it's super rare rather unlikely...

26.10.2025 12:24 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Hypochaeris maculata??

26.10.2025 11:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

Peasgood Nonsuch is one of the 8 trees I planted in my Belgian Fence about 3 years ago. First 2 apples off it this year and yes they were huge!

12.10.2025 15:47 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Late for #WildFlowerHour, and late a chance to cross pollinate other plants is this gorgeously defiant Meadowsweet.
Broughton Sanctuary, 30 Sep.
@bsbibotany.bsky.social

05.10.2025 21:06 πŸ‘ 6 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Beavers, wetland creation, river management for flood prevention
Beavers, wetland creation, river management for flood prevention YouTube video by Bill Sutherland's Conservation Concepts

youtu.be/xKyO1H9BWGg?...

29.09.2025 09:30 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Water Chickweed - Stellaria aquatica - brightening up the bed of a former meander of the Afon Llynfi, Powys - not so frequent in Wales. 5 styles, petals deeply bifid and longer than sepals, numerous glandular hairs above, and ovate leaves with cordate base
#wildflowerhour @bsbibotany.bsky.social

28.09.2025 19:01 πŸ‘ 22 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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New to me: the fascinating Fluted Bird's Nest - Cyathus striatus. Growing in damp wood chip under trees; Talgarth, Powys.
The white epiphragm caught my eye, which has brown hairs. Inner surface of the funnel-shaped peridium (1cm wide) is fluted and has pale egg-shaped peridioles at base.
#fungi

18.09.2025 15:01 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0