Plant extinction tends to slip under the radar compared to animal extinction, but it’s just as big a hit to our planet’s biodiversity. Over the centuries, loads of plant species have vanished thanks to habitat destruction, climate shifts, human interference, and sometimes just plain bad luck. When a plant disappears, it can ripple through entire ecosystems, wiping out potential sources of medicine, food, and even environmental stability.
Knowing which plants we’ve lost really puts the spotlight on why conservation matters and just how fragile nature can be. From ancient species that once ruled the Earth to more recent losses, each one says something about how the world is changing, and how we’re changing it. Some of these plants were used for medicine, others were linchpins in their native habitats, keeping the local wildlife and landscape in balance.
Here’s a look at twenty plant species that are now gone, from ancient conifers and early land plants to island trees and rare regional varieties.
1) Franklinia alatamaha (Franklin tree)
The Franklin tree vanished from the wild in the early 1800s. William Bartram spotted it along Georgia’s Altamaha River back in 1765, naming it in honor of Benjamin Franklin.
Every Franklin tree alive today comes from seeds the Bartrams collected before 1803. Its white flowers with yellow centers are still grown in gardens and arboretums, and the tree tops out around 20 feet.
2) St. Helena olive (Nesiota elliptica)
This plant was native only to Saint Helena, a remote island in the South Atlantic. Despite the name, it wasn’t related to true olives but belonged to the Rhamnaceae family.
The last wild tree died in 1994, and the final cultivated plants followed in 2003, wiped out by fungal disease. With its loss, the entire Nesiota genus disappeared, since this was its only species.
3) Silphium (ancient medicinal plant)
Silphium was a prized plant in ancient Greece and Rome, growing wild in Cyrene (now Libya). People used it for everything: seasoning, medicine, perfume, even as an aphrodisiac.
It was so valuable it ended up on Cyrenian coins and was worth as much as gold. Ancient writers described it as having thick roots, celery-like leaves, and yellow flowers.
Silphium disappeared around the 1st century CE – one of the earliest documented plant extinctions. There’s some recent buzz about a possible relative, Ferula drudeana, turning up in Turkey, though.
4) Strychnos electri
Strychnos electri is an extinct flowering plant found preserved in Dominican amber. Scientists identified it from fossil flowers dating back 15 to 30 million years, smack in the mid-Tertiary.
Researchers stumbled on it while examining amber from a Dominican mine. It’s part of the Strychnos genus, notorious for species with toxic compounds. These ancient flowers shed light on asterid evolution and where they grew way back when.
5) Araucarioxylon arizonicum (Ancient conifer)
This massive conifer lived about 225 million years ago during the Late Triassic. Some specimens reached 150–200 feet tall, with trunks up to 8 feet wide, which is impressive, right?
You’ll find its petrified remains mostly in Arizona’s Chinle Formation, especially in Petrified Forest National Park. It’s even Arizona’s official state fossil.
Its closest living relatives? The monkey puzzle tree and Norfolk Island pine, both in the Araucariaceae family.
6) Sophora toromiro (Easter Island tree)
Sophora toromiro, or the toromiro tree, was native to Easter Island. By the 1960s, it had vanished from the wild, mostly due to deforestation and overgrazing.
The toromiro was important to the Rapa Nui people. Now, you’ll only see it in botanical gardens and a handful of private collections, where folks are still trying to keep it alive through global conservation efforts.
7) Cooksonia (early vascular plant)
Cooksonia is one of the earliest vascular plants to set foot on land, showing up about 433 million years ago in the Silurian. They were tiny, just a few centimeters tall, with simple forked stems and no roots or leaves.
You’d spot Cooksonia by its Y-shaped branches and basic vascular tissue. The genus stuck around until the Early Devonian, then disappeared roughly 393 million years ago.
8) Austrocedrus chilensis (extinct subspecies)
Austrocedrus chilensis still grows in Chile and Argentina, but certain isolated populations and maybe a few subspecies have faded from their old stomping grounds. Pathogens, habitat loss, and human pressure have wiped out some localized types.
Some northern populations at the edge of its range might represent lost genetic lines. These disappearances chip away at the species’ genetic diversity, even though the main group survives in Patagonian forests.
8) Ginkgo adiantoides (prehistoric ginkgo species)
Ginkgo adiantoides was an extinct ginkgo species that spanned from the Late Cretaceous to the Miocene. By the Paleocene, it was the dominant ginkgo in the Northern Hemisphere.
Its leaves looked almost identical to today’s Ginkgo biloba, which makes fossil ID a headache. It thrived in hot, humid climates across North America and up north.
Ginkgo adiantoides disappeared from North America about 7 million years ago, late in the Miocene.
9) Lobelia rhombifolia (extinct subpopulation)
Lobelia rhombifolia, or tufted lobelia, is an annual native to southern Australia. It sports purple flowers with white throats and grows up to 30 centimeters. The diamond-shaped leaves are a giveaway.
While the species is still around, some subpopulations have vanished from their old habitats. Habitat loss and environmental shifts have caused these local disappearances in southern Australia.
10) Tasmanian maple (Nothofagus gunnii, extinct in parts)
Nothofagus gunnii, also called deciduous beech or tanglefoot, is Australia’s only native temperate deciduous tree. It’s found only in Tasmania’s alpine regions above 800 meters.
The tree is extremely sensitive to fire and climate change. If a population gets wiped out by fire, it can’t recover unless there are nearby survivors. Its limited range makes it tough for these trees to bounce back when lost from certain mountain spots.
11) Silk cotton tree (certain regional populations extinct)
The silk cotton tree (Ceiba pentandra) still exists in tropical regions, but some regional populations, like those in Mumbai, have been lost to urban growth and habitat destruction.
These giants once soared to 80 feet or more. Losing them locally can mess with ecosystems and erases important cultural and economic resources for communities that depended on them.
12) Kentucky coffeetree (extinct in wild regions)
The Kentucky coffeetree’s gotten pretty rare in its old haunts, mostly because the Ice Age giants that used to eat its pods are long gone. Mastodons and other massive mammals probably chomped on those tough seed pods and helped scatter them all over North America.
Now that those big critters are history, the coffeetree’s chunky seeds just don’t get around much, as wind and smaller animals can’t really do the job. These days you mostly find the trees hanging on in scattered patches, often where moisture helps the pods rot away naturally, or where they send up new shoots from their roots and form little colonies.
