Surprised to see so much Leucobryum sp. at Farnham Common (leaf sections next time). Joined by Diplophyllum albicans- I rarely see this in Herts, so very nice! But so common nationally. An unplanned journey, but very welcomed & neatly concluded with a warming Indian breakfast at a café near Burnham.

Buxbaumia viridis (Green Shield Moss). A pretty tiny bryo and difficult to spot, only the seta and capsule are visible. @bbsbryology.bsky.social

Tortula andicola Mont. Venezuela, Andes, Merida, Pico Espejo near Pico Bolivar Polylepis forest on boulder slope at 4200 m, leg 2001 Lüth Characteristic are the collenchymatous leaf cells and some sharp teeth at the base of the awn.

Thidium peruvianum Venezuela, Andes, Merida, Pico Espejo near Pico Bolivar Polylepis forest on boulder slope at 4200 m, leg 2001 Lüth 3284 With one papilla per cell in branch leaves like T. delicatulum, but with long tapering stem leaves.

Petalwort (Petalophyllum ralfsii) about in good numbers on the west Clare coast this afternoon 😍

Scapania nimbosa 😍 Found one small patch of this fabulous liverwort whilst exploring the incredible hepatic mat communities up on Mount Brandon.

Durmortiera hirsuta (Durmortier's Liverwort) 😍 A fabulous dark green thallose liverwort with a bristly thallus and receptacles. @bbsbryology.bsky.social

Sphagnum fallax var brevifolium, S. Flexuosum and S. medium/divinum #moss #bryophyte

Tal·lus de l'hepàtica REBOULIA HEMISPHAERICA, als marges de les pistes forestals que travessen el Bosc de Poblet. #briòfits #hepàtiques #liverworts #bryophytes

Thallus of REBOULIA HEMISPHAERICA, growing very well on the shaded edges of a forest track, in the "Bosc de Poblet" forest. #bryophytes #liverworts

A nice sandrock site in Sussex, abouot ten minutes' drive from the house, with Leucobyrum juniperoideum on the rocks, and L. albidum on the Sweet Chestnut stumps #bryology

Look at the fancy pants (spore capsule coverings) on these Mannia sp #liverworts! Northwest Territories, Canada. #bryophyte #botany #fungifriends

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

Liverwort, Marchantia polymorpha. The female reproductive structures in the photo are about 3cm high. Northwest Territories, Canada. #liverwort #bryophyte #botany #fungifriends

Liverwort, Athalamia hyalina. They always look angry. #liverwort #bryophyte #fungifriends NWT, Canada.

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

Sphagnum warnstorfii #moss #bryophyte

Merry Christmas moss to you and yours.

Closeup :)

Sphagnum cuspidatum and drosera intermedia #moss #bryophyte #carnivorousplants

Sphagnum quinquefarium and merry christmas! #moss #bryophyte

Barttramia potosica Mont. Venezuela, Andes, Merida, Pico Espejo near Pico Bolivar crevice in N-exposed rock face, 4730 m, leg Lüth 3270 Leaves stiffly erect, tipps brittle, cells at margin of leaf shoulder hyalin, delicate

Syntrichia ruralis #moss growing on crustose #lichen (Rhizocarpon sp, I think). NWT, Canada. Such a beautiful little moss. #bryophyte #botany #fungifriends

Well, this explains where he gets (harvests) his hair from. Polytrichum moss (common name haircap moss) spore capsules. When the spore capsules are fully mature, the protective ”hair cap” falls off. Newfoundland, Canada. #moss #bryophyte #fungifriends

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

An occasion where the substrate is rarer than the moss. Bryum capillare and Rhynchostegium confertum on a rural Sussex phone box #bryophytes

Mosses love to decorate with slime molds. Northwest Territories, Canada. #slime #fungifriends #myxo #moss #bryophyte #botany

A nice day out in north Conamara today with my friend Rud to revisit a population of Braunia imberbis and do a bit of recording. Hedwigia stellata and Glyphomitrium daviesii were particularly nice looking also. Thanks to @nimbosaecology.bsky.social for the heads up on seeing G. daviesii

Wishing you all a very Happy Christmas and a most bryological New Year from the BBS.

Sphagnum palustre by Kevin Zeitzmann in Pfälzer Wald, Germany #moss #bryophyte

Campylopus cuspidatus (Hornsch.) Mitt. Venezuela, Andes, Pico el Aquila, Laguna Mucubaij, on wet ground around the lake, 3700 m, leg. 2001 Lüth 3253, det Frahm 2003

Drawdown species at Wilstone Reservoir. OK, so we know about the Norfolk Bladder-moss (Physcomitrium eurystomum), Riccia cavernosa, Mudwort (Limosella aquatica)--- but what's the green filamentous stuff? It's the largest constituent of mud-pioneer species. It physically competes with the others.

CROSSIDIUM SQUAMIFERUM, creixent sobre conglomerats assolellats prop de Collbató, al peu de la Muntanya de Montserrat. #briòfits #molses

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

Out with the Cambs Bryology Hunt on Saturday, visiting Hayley Wood. My last visit to the woods was extremely wet, and I was musing about the hydrology here and its role in supporting all the special plant species. Neckera complanata in a festive mood around an Ash stool.🤪

Golden sphagnum balticum, S. papillosum and a red S. medium #moss #bryophyte

Schizymenium campylocarpum (Hook. & Arnott) Shaw Venezuela, Andes, Merida, Pico el Aquila, N-exp. slope at roadside, 3900 m, leg. 2001 M. Lüth 3238, det A. Schäfer-Verwimp

ENCALYPTA STREPTOCARPA amb gemmes de reproducció vegetativa, agrupades a l'axil·la dels fil·lidis. Amb el microscopi podem veure la seva típica forma filiforme. #briòfits #molses

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

On Saturday the @bbsbryology.bsky.social NE Scotland group had a great outing to Creag a' Chlamhain at Crathie where we (re)found a good range of unusual species including Clevea hyalina and Schistidium atrofuscum

Nicely coloured Sphagnum girgensohnii and russowii/rubellum #moss #bryophyte

Pogonatum campylocarpum (C. Müll.) Vitt Venezuela, Merdia, cloud forest at way to Pico Humboldt, earthen slope under overhang, 2150 m, leg. Michael Lüth 3220, det. A. Schäfer-Verwimp Marginal cells of lamellae in pairs, conical. Theeth on leaf shoulder.

Bryum bornholmense - a tuberous Bryum of heathy soils, in this case Odiham Common, N Hants. Tubers are amber coloured in incident light, and translucent with thin cell walls and barely protuberant cells in transmitted light. Has strong leaf margins with border cell walls approx 3 microns.

Thuidium assimile from a fixed dune relevé at Dogs Bay, Conamara. Last recorded in H16 in 1966 (& perhaps 68). First time I have come across (knowingly) the species T. assimile ag fás sa dumhcha socra in san Iorras beag thiar. Suíomh nua don speiceas agus an chéad cuntas dhó le haghaidh píosa fada

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

Riccia fruitans in the middle of one of the weird human-made "mirror" pools at the top of the "gorge" in Chelwood Vachery, Ashdown Forest, High Weald, East Sussex. Had to use telephoto lens so hard to get a good look. Best liverwort spot for some time for me.

Today the BBS Southern Group spent a rather wet day at Odiham Common, N Hants, including the abandoned clay pits dug for brick making. Interesting plants included Platygyrium repens, Pleuridium sp., and the aquatic liverwort Ricciocarpos natans on the Basingstoke Canal.

LOPHOZIA cf. BANTRIENSIS i LOPHOZIA TURBINATA, creixent mesclades en un talús humit prop de Santa Cecília de Montserrat. #briòfits #hepàtiques

🌾🌱⚘️🌿🌼🦠🚀 #BUC2026 Impressive survival of moss spores, Physcomitrella patens (spreading earthmoss) on outside of International Space Station for 9 months! Vacuum, radiation, dry, too much light, cold. Over 80% germinated when back on Earth. www.cell.com/iscience/ful...

Sphagnum pulchrum, fallax and maybe papillosum #moss #bryophyte