Pedro Jiménez-Mejías

A meme for #phylogenetics people.

Photo of a shrubby plant with visible, erect stems bearing tufts of distichously arranged leaves at their tips.

Photo of a plant in a rocky habitat. Tight clusters of fan-shaped tufts of leaves hug the ground. A single, erect spike of red, tubular flowers emerges from one plant.

Kumara, also recently segregated from Aloe, has just two species, the best known of which is K. plicatilis (1st 📷). The lesser-known K. haemanthifolia (2nd 📷, by Peter Thompson CCBYNC4) is a cracker & very worthy of cultivation. 😍

Continuamos la serie quincenal del Congreso de la SEBOT con Asturias. 𝘜𝘴𝘯𝘦𝘢 𝘧𝘭𝘰𝘳𝘪𝘥𝘢 es un conspicuo líquen de los húmedos bosques del norte peninsular. 🗓️¡Recuerda! Septiembre de 2025: congresosebot2025.com

Estas escenas de naranjas llenando las calles pueden resultar raras, pero no en Sevilla. Allí tendrá lugar el II Congreso de Botánica, donde uno de los principales árboles urbanos ed el naranjo amargo, Citrus × aurantium. ¿Quieres saber un poco más? 👇

The horizon from my office’s windows asked me to give another opportunity to my day 🥰

La Segunda Circular del Congreso Español de Botánica de 2025 ya está disponible 👇🏼
congresosebot2025.com/docs/circula...
Tenéis información de cómo proponer simposios y talleres, abierto hasta el 28 de febrero.
Os esperamos del 22 al 25 de Septiembre en Sevilla 🍊 ¡Pronto más info!

I think that using coll numbers-when available- as base to create a standardize form could be a more straightforward way to proceed than create a full new system of codes. 😉

Yet these are the most readily available datum in most specimens to link several specimens unambiguously to a single collection event. This is what is needed to avoid multiplicity of records over databases.

There is a very old system of universal desambiguators, shared among all duplicates and generated at the moment of field collection: collector number. But these are often not being carefully curated in most databases, since modern curation prefers numerical barcodes.

The Christmas Sedge announces that... It's time!!!!!

Some fabulous cheering Luronium natans on a dull December day. Got to love a bit of Floating Water-plantain 💚🌱

The spatial patterns of avian seed dispersal in fragmented anthropogenic landscapes are congruent with an ecological and evolutionary history with open and semi-open habitats created and maintained by extinct megaherbivores

🧑‍🎨: @claraprieto.com

@journalofecology.bsky.social

doi.org/10.1111/1365...

Sparrows certainly like a sweet treat!

Behold! Gluteus minimus, an incertae sedis fossil whose name means "tiny butt" bizarrecreature.blogspot.com/2014/11/crea... Let your imagination gets you to... to the Devonian!

The generalistic house sparrow drinking nectar from Strelitzia nicholai in Torremolinos during Spring 2023. Is that how bird-plants interactions may start cementing @txaverius.bsky.social?

A must-see if you visit Boston and something any botanist should have the privilege to see at least once in their lives 😉

Details even in parts where no one would expect an artist to pay attention to: see the realistic look of these roots!

It is the pieces representing the most familiar plants where one can see the incredible exatitude of these models.

The models are not simply an artistic demonstration. They have a great didactic value: the plants represented are anatomically accurate, and the models contain scale-magnifications of relevant organs, tissue and floral pieces.

The collection is a handmade work performed by the Blaschkas (father and son) during the late 19th and early 20th Century. www.hmnh.harvard.edu/glass-flowers The collection contains >700 plant models from all major taxonomic groups.

These are not flowers. I repeat: these are NOT flowers. What you see here is the Glass Flowers collection from the Harvard Museum of Natural History, in Cambridge, Massachusetts. Come with us to admire some of these stunning pieces! 👇🏼

Latest work on Atlantic bluefin #tuna tagged off the coast of Norway showing their extensive annual migrations, high site-fidelity and dynamic vertical diving behaviour in the Atlantic #Ocean & Mediterranean Sea: royalsocietypublishing.org/doi/10.1098/...

#fisheries #oceanography #movementecology

#Drosera hyperostygma #Droseraceae! The Orange flowered Pygmy Sundews are a joy to see! These are common species in the Perth hills distinguished by their black stamen filaments and black egg shaped stigma for which they are named for! #WildOz

Environmental filtering, not dispersal history, explains global patterns of phylogenetic turnover in seed plants at deep evolutionary timescales - Nature Ecology & Evolution This modelling study integrates comprehensive regional plant inventories, environmental conditions and palaeogeographical reconstructions to assess the relative roles of environmental filtering and di...

Phylogenetic turnover of seed plants 🌱 at a global 🌐 and across phylogenetic scales: www.nature.com/articles/s41...

When you can't decide if you love dogs more than the herbarium.

When your toxic supervisor messed up the taxonomy and now you are in charge.

Cyperaceae are not known by their floral displays. Then one day you run into Cyperus proteus, a sedge that looks like a dandelion 😱 A striking case of mimicry to exploit insect-mediated pollination, where the anthela is modified into a colorful pseudanthium.

www.inaturalist.org/observations...

This is how you imagine vouchers when you are from a place with a warm climate but head north in Winter to study a herbarium collection.

We spent this past week hunting more vouchers at the @nybg.bsky.social for the core imaging of iSedge @cetaf.bsky.social project. At this point the largest herbarium in the W Hemisphere helped us reach the incredible number of 1300 sedge species previously unavailable for www.cyperaceae.org! 😍

A drop of water balancing on top of hydrophobic trichomes of the invasive water fern Salvinia molesta.

I split the leaf with a razor in order to get the full detail of the trichome structure.