The definition of serotiny is sometimes expanded to include seed retention of any sort. Mammillaria pectinifera expels fruits in wet years & retains them in dry years—a bet-hedging strategy to ensure seedling establishment. 📷: Noemí Velasco Rubí CCBYNC4. #Cactaceae #serotiny #Botany 🌾🧪🌱

Best of Random Thursday is this slow-dawning beauty, “Serotiny” by Chuck Johnson. chuckjohnson.bandcamp.com/track/serotiny

Serotiny is the storage of seeds in close cones or fruits, trapping the seeds & preventing dispersal until the cones are heated (usually by fire). Post-fire conditions are ideal for germinating seedlings. These are cones of Pinus clausa of the SE USA. #Pinaceae #serotiny #Botany 🌾🧪🌱

Serotiny means that the seeds are stored on the mother plant, that they are retained 1+ yr (up to 10+ yr), & that high temp. (usually from fire) is involved in the release of the seeds. 📷: Pinus pinaster. Note 2 generations of seed cones on the shoot. #Pinaceae #serotiny #Botany 🌾🧪🌱

Australia’s Banksia has fruits that are serotinous, opening after fire. Wildfires clear competing vegetation + deposit nutrients in the soil = good conditions for seedling establishment. 📷: Banksia ornata by davidsando CCBYNC4. #Proteaceae #serotiny #Botany 🌾🧪🌱

Pinus banksiana cones are strongly serotinous in populations in the center of the species’ range, but less so at the edges of its range (where fires are less frequent). It's a bet-hedging strategy to ensure seedling establishment. 📷: Taylor Justason CCBYNC4. #Pinaceae #serotiny #Botany 🌾🧪🌱

Check out the female inflorescences of Cliffortia conifera, a denizen of fire-prone ecosystems of South Africa. The “cones” are condensed clusters of flowers & bracts. This species is serotinous & also resprouts from lignotubers. 📷: Ismail Ebrahim CCBYNC4. #Rosaceae #serotiny #Botany 🌾🧪🌱

Melaleuca huegelii is from Western Australia. Like many Melaleuca spp., it’s a serotinous species. The fruits are retained in capsules until released by heat/fire. #Myrtaceae #serotiny #Botany 🌾🧪🌱

A few of my favorite colors from the last of our 2024 clip: shown are Pansy, Warbler, and Jay on our Serotiny base. 3 ply, sport/light DK - 100% Romney wool from our flock.

It has luster, it has bounce, it is next-to-skin soft! Link to our shop in bio.

#woolyarn #farmyarn #knitting #yarn #FDT

Pinus radiata releases seeds when the temperature goes above 45°C (113°F). Sometimes that threshold temperature can be reached by passive solar heating of the cones if they are exposed to sunlight on the tree or on the ground. They can open even without fire. #Pinaceae #serotiny #Botany 🌾🧪🌱

Within cohort variability in serotiny: i.e., two cones of the same age (+7 years), one open and the other closed (serotinous; saved for the next fire).
Pinus pinaster, eastern Spain

🧪🌍🌿🌾🔥💚🪴 wildfire #PlantBiology

These fruits of Hakea lehmanniana (📷: geoffbyrne CCBYNC4) are impossibly woody, but a bushfire will trigger the fruits to open and release the seeds. Native to Western Australia. (HT to devils.poison on IG for directing me to this sp.) #Proteaceae #serotiny #Botany 🌾🧪🌱

🔥ADVANCE ACCESS🔥: Squirrels reduce post-fire regeneration potential in serotinous pines
doi.org/10.1093/aob/...

#PlantScience

All of that is to say, I'm very pleased with the 4900 word "oh no it's very cold, you'll have to share the bed with us" Serotiny story that I finished today.

Yes, they did. And yes, they did uwu

Ridley, part of the Serotiny gang, my sleepy, irritable doctor

Find the people who remember the future
Before they and I forget.
When this clench fisted forest fire exhaust’s itself
Which it will,
Serotiny.

#PennedReveries #BeforeIForget #poem #poetry #writing #writingcommunity
@dmiddleham.bsky.social

Part 8 — Serotinous Pines — Seeds that need fire

Serotiny—the art of waiting

You know what? Sometimes success looks suspiciously like procrastination wearing a disguise. 🧠✨

Sequential forests burn every few years, their cones deliberately locked shut until flames kiss the bark. Years of patien...

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🔥🌱 From the upcoming #AJB Special Issue: “Understanding novel fire regimes using plant trait‐based approaches" 🌱🔥

Community #phylogenetics of North American #conifers through the lens of fire-adapted traits

By Daniel Turck, Aaron Sparks, Jack Sullivan & David Tank
doi.org/10.1002/ajb2... #botany