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Ian Jeffrey @iancjeffrey.bsky.social · 08/04/2026

Two mosses which grow in habitats polluted with heavy metals, like lead and zinc. The bright yellow-green one which looks like felt is Weissia controversa var. densiflora. The other is Bryum pallescens. Here they are growing in an abandoned gold mine in North Wales. @bbsbryology.bsky.social (1/2)

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Ian Jeffrey @iancjeffrey.bsky.social · 26/03/2026

Shining Hookeria (Hookeria lucens) typically grows around streams and on slopes and banks in temperate woodlands. Hookeriaceae is, however, mostly a tropical family. Related species grow, e.g., as epiphylls on the leaves of other plants in tropical rainforests.

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Ian Jeffrey @iancjeffrey.bsky.social · 19/03/2026

The moss Dicranum scottianum is endemic to high rainfall regions of Europe & Macaronesia. In this Welsh temperate rainforest it is growing as an epiphyte on Oak. This example also has its own epiphytes - little colonies of cyanobacteria or algae. Plants on plants on plants @bbsbryology.bsky.social

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Ian Jeffrey @iancjeffrey.bsky.social · 07/03/2026

Schistochilopsis incisa (Scapaniaceae) growing on a rotting log in N Wales. This liverwort has been reported from every continent except Australasia and Antarctica, but it is polyphyletic, so probably includes multiple undescribed species with smaller ranges. @bbsbryology.bsky.social

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Ian Jeffrey @iancjeffrey.bsky.social · 10/02/2026

More incredible temperate rainforest, from Seatoller Wood in Borrowdale. Nice to see native tree cover reaching the 300m mark. Of two Lepidozia cupressina colonies with good OSGRs available on NBN, though, I could sadly only refind one. I think the other is genuinely gone. @bbsbryology.bsky.social

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Ian Jeffrey @iancjeffrey.bsky.social · 29/12/2025

Beautiful winter evening light in an area of young birch and oak woodland on Gray Hill Common in Wentwood, the largest area of (planted) ancient woodland in Wales.

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Ian Jeffrey @iancjeffrey.bsky.social · 09/12/2025

An amazing example of upland oakwood/temperate rainforest habitat above ~200m in North Wales. A really surreal place to spend a few hours on a wet and misty day.

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Ian Jeffrey @iancjeffrey.bsky.social · 05/12/2025

Cool to find some big healthy cushions of Lepidozia cupressina at a site in Gwynedd, where it doesn't seem to have been recorded before. Good news for one of our less common temperate rainforest liverworts in Wales, as it has declined dramatically at some nearby sites @bbsbryology.bsky.social

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Ian Jeffrey @iancjeffrey.bsky.social · 14/11/2025

A tree clothed in the Filmy-fern Hymenophyllum tunbrigense at Ceunant Llennyrch NNR. Transported for a moment to the Macaronesian laurissilva. We can only imagine what virgin temperate rainforest looked like in the Welsh uplands now - perhaps this was a more common sight @bsbibotany.bsky.social

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Ian Jeffrey @iancjeffrey.bsky.social · 13/11/2025

The leaves of the moss Dicranodontium denudatum break off easily and act as vegetative propagules. They are very "sticky" too, at least when wet. Was perhaps an even more efficient method of dispersal when more large animals like deer, boar, and moose roamed our woodlands. @bbsbryology.bsky.social

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Ian Jeffrey @iancjeffrey.bsky.social · 11/11/2025

Trees covered in the hyperoceanic liverworts Plagiochila spinulosa (left) and Scapania gracilis (right) in the temperate rainforest at Coed Hafod-y-Llyn, Gwynedd. @bbsbryology.bsky.social

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Ian Jeffrey @iancjeffrey.bsky.social · 16/07/2025

Willow Feather-moss (Hygroamblystegium varium) on stones in willow carr around the edges of a dried-up reservoir. It probably spends much of the year at least partially submerged, as the surrounding soil was sprouting 100s of plants of Physcomitrium pyriforme and P. patens. @bbsbryology.bsky.social

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Ian Jeffrey @iancjeffrey.bsky.social · 13/07/2025

Sausage-shaped antheridia (reproductive structures) from male plants of the moss Zygodon conoideus. They are surrounded by paraphyses (unicellular strands) and produced in a rosehip-shaped perigonium. Many bryophytes produce reproductive structures at this time of year. @bbsbryology.bsky.social

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Ian Jeffrey @iancjeffrey.bsky.social · 24/04/2025

It was nice to find a mega colony of the uncommon hyperoceanic liverwort Metzgeria leptoneura in North Wales recently. Very surprised that it doesn't seem to have been noticed at this otherwise well-recorded site before.

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