Pedro Jiménez-Mejías

@pjimmej.bsky.social

Ramón y Cajal Researcher at #UPO. #Sedge taxonomist but general naturalist at heart. #Iamabotanist #Cyperaceae #Carex #Taxonomy

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. 😍

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.

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? 👇

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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! 👇🏼

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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.

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I spent the last five summers sharing the infamous mediterranean heat with 15 species of thistles that flower at that somewhat absurd time of year, seeking to understand (something about) their thermal ecology. Here are the results. I think all my sweat was worth it. biorxiv.org/cgi/content/...

Flowers that cool themselves: thermal ecology of summer-blooming thistles in hot Mediterranean environments

Flower exposure to high temperature reduces the production, viability and performance of pollen, ovules and seeds, which in turn reduces individual fecundity and risks the survival of populations. Aut...

biorxiv.org

This picture is the "Great Piece of Turft", 1503, by the German painter Dürer, preserved in the Albertina museum (Vienna). It is among the earliest pieces of art representing in detail grasses and other "non-flowering" plants. I always wondered if there is an equivalent pic depicting sedges

Miriam@migart00.bsky.social · 2y ago

Hoy vengo a compartir este cuadro de Alberto Durero se llama "Gran mata de hierba" o "La gran pradera". En él se pueden ver varias especies herbáceas, ruderales y muy comunes como Dactylis glomerata, Plantago mayor, Taraxacum officinale, Poa prantensis...

Salicaceae are famous for salicin, first isolated from Salix alba, which our bodies convert to salycilic acid, a painkiller. Other Salicaceae are toxic: Some Salix & Banara spp. have cyanogenic glycosides (viz. prunasin). 📷: Salix exigua (Matt Lavin CCBYSA2), a cyanogenic species. #botany 🌾🧪🌱

Photo of leafy branches with alternate, narrow, simple leaves.