The White-shafted Peperomia, described in 1920, is known only from the type collection that was made in the 19th century in the forests of the western Andean slopes in the Pichincha Province of Ecuador.
The species was never recorded since and is possibly extinct.
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edited: 03.05.2022
Atacazo Peperomia (Peperomia micromerioides)
The Atacazo Peperomia is known from a single collection that was purchased on the Atacazo volcano near the city of Quito in the Pichincha Province, Ecuador.
The species was never seen since and might be extinct.
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edited: 20.09.2020
Pichincha Peperomia (Peperomia pichinchae)
The Pichincha Peperomia was found growing along the streams on the slopes of the Pichincha Volcano in the Pichincha Province, Ecuador.
The species was apparently not found in recent decades and is considered possibly extinct, yet it could also exist in nearby areas, however, I unfortunately could not find out anything about it so far.
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edited: 20.09.2020
Waikamoi Peperomia (Peperomia subpetiolata)
The Waikamoi Peperomia, named ‘ala ‘ala wai nui in the Hawaiian language, is known from a single population near the Kula Pipeline between the Puohokamoa- and the Waikamoi Streams in eastern Maui, Hawaiian Islands.
The species itself is apparently extinct, however, there apparently still exists a hybrid of this species and the Forest Peperomia (Peperomia hirtipetiola C. DC.) that is kept in cultivation.
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edited: 20.09.2020
Rio Lita Peperomia (Peperomia litana)
This species was only recorded once in 1901 at the Río Lita close to the Colombian border in Ecuador.
The species was apparently not found since and might be extinct.
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edited: 20.09.2020
Glandulose Peperomia (Peperomia glandulosa)
The Glandulose Peperomia was described in 1890, it was originally only known from the type material that was collected in the late 19th century somewhere in the surroundings of the city of Loja in the Loja Province, Ecuador.
The species was collected again in the 1960s but apparently not again, it might already be extinct.
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edited: 20.09.2020
Degener’s Peperomia (Peperomia degeneri)
Degener’s Peperomia is known exclusively by the type collection that was made in 1928 in eastern Moloka’i, Hawaiian Islands.
The forests of Moloka’i are overrun by introduced invasive plant species and by plant-eating ungulates, the species was never recorded since the type collection and is very likely extinct.
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edited: 20.09.2020
Oyacachi Peperomia (Peperomia mitchelioides)
The Oyacachi Peperomia is only known from one collection that was purchased about 100 years ago near Oyacachi, a small indigenous community in the Napo Province, Ecuador.
The species was never recorded again and is possibly extinct.
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edited: 20.09.2020
Tablahuasi Peperomia (Peperomia tablahuasiana)
The Tablahuasi Peperomia was found more then 100 years ago at a place named Tablahuasi on the slopes of the Pichincha Volcano in the Pichincha Province, Ecuador.
The species was not seen since and is probably extinct.
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edited: 20.09.2020
Small-limbed Peperomia (Peperomia parvilimba)
This species was only recorded once in the early 20th century near the Río Santiago in the Esmeraldas Province of Ecuador.
The species was apparently not found since and might be extinct.
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edited: 20.09.2020
Rock-dwelling Peperomia (Peperomia petraea)
The Rock-dwelling Peperomia is known only by the type material that was collected in the 19th century along the Río Huambi near the town of Puembo, a rural parish in the Metropolitan District of Quito, the capital city of Ecuador.
The area has lost almost all of its native vegetation and this species very likely is extinct.
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edited: 20.09.2020
Rio Daule Peperomia (Peperomia dauleana)
The Rio Daule Peperomia was only ever found once sometimes in the 19th century near the Río Daule in the Guayas Province, Ecuador.
The habitat of the locality is now almost completely destroyed and the species is very likely extinct.
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edited: 20.09.2020
Pululahua Peperomia (Peperomia pululaguana)
The Pululahua Peperomia is known from only two populations, which both were last recorded more then 100 years ago, one on the slopes of the Pichincha Volcano and the other one on the slopes of the Pululahua Volcano both in the Pichincha Province, Ecuador.
The species apparently was not found in recent decades and might be extinct.
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edited: 20.09.2020
Thick-spined Peperomia (Peperomia stenostachya)
This species known from a single collection purchased at the flanks of the Pichincha Volcano in the Pichincha Province, Ecuador.
The species was apparently not found since and might now be extinct.
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edited: 20.09.2020