Demanded Pepper Tree (Piper poscitum)
This species was described in 1950, it is apparently known only from a single collection that was made in 1934 in the lowland forest near the city of Quevedo in the province Los Ríos in Ecuador.
The species was not recorded since and is very likely extinct.
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edited: 27.11.2018
This tree was found in lowland forests, it is known exclusively from the type material that was collected in 1945 in the province Guayas in Ecuador.
The species was not found since and may be extinct.
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edited: 27.11.2018
Ross’s Peperomia (Peperomia rossii)
Ross’s Peperomia was described in 1900; it was endemic to Christmas Island in the Indian Ocean.
The species was an epiphytic herb that reached sizes of about 5 to 10 cm, the stems were glabrous and rooted at their nodes, the leaves were usually opposite, elliptic and 1 to 3 cm long.
Ross’s Peperomia is only known from the type material, which was collected in 1898, it has never been found since and is apparently extinct. [1]
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References:
[1] D. J. James; P. T. Green; W. F. Humphreys; J. C. Z. Woinarski: Endemic species of Christmas Island, Indian Ocean. Records of the Western Australian Museum 34: 55-114. 2019
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edited: 03.05.2022
Stipuled Pepper Tree (Piper stipulosum)
The Stipuled Pepper Tree is known exclusively from the type material that was collected about a century ago at the Cordillera de Angamarca at the western slopes of the andes in the Cotopaxi province of Ecuador at an elevation of about 3500 m.
The species is now considered most likely extinct.
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edited: 27.11.2018
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
Angamarca Pepper Tree (Piper angamarcanum)
The Angamarca Pepper Tree was endemic to the province of Zamora Chinchipe, Ecuador, where it was restricted to the Páramo vegetation at elevations of 3000 to 3500 m.
The species is apparently known only from material that was collected in 1905 (or 1912 depending on which source).
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edited: 27.11.2018
Baeza Pepper Treelet (Piper baezanum)
Baeza Pepper Treelet was described in 1920, it is apparently known only from the type material that was collected almost a century ago.
The species was restricted to a small region somewhere near the city of Baeza in the Napo Province of Ecuador, where it was found in mountain forests at elevations between 500 and 1000 m.
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edited: 27.11.2018
Rough-leaved Pepper Tree (Piper trachyphyllum)
This species was restricted to the mountain forests of the western slopes oft he Andes in the Chimborazo Province of ecuador, where it was found at elevations of 1600 to 2000 m.
The species is known only from material that was collected about a century ago and may well be already extinct.
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edited: 27.11.2018
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
Manabi Pepper Tree (Piper manabinum)
The Manabi Pepper tree is known exclusively from material that was collected in 1892 or 1893 on the Hacienda El Recreo in the province Manabí and in the vicinity oft he city of Balao in the province Guayas in Ecuador.
The type material was destroyed during World War II.
The Manabi Pepper Tree is possibly extinct.
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edited: 27.11.2018
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
Soft Pepper Tree (Piper molliusculum)
This species from the lowland forests near Puente de Chimbo in the province of Guayas in Ecuador is apparently known only from material that was collected about one century ago, and may well be extinct now.
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edited: 27.11.2018
Bubble-leaved Pepper Tree (Piper bullatifolium)
The Bubble-leaved Pepper Tree is known only on the basis of the type material that was collected about one century ago.
The species was restricted to the Andean mountain forests in the province Chimborazo in ecuador, where it was found at elevations between 2000 and 2500 m.
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edited: 27.11.2018
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
Wibom’s Pepper (Piper wibomii)
Wibom’s Pepper was found only near the town of Quinindé east of the Río Blanco in the province Esmeraldas, Ecuador, a region that is now more or less completely deforested and transformed into farmland.
According to different sources this species is/was either a climbing liana or a tree.
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edited: 27.11.2018
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
Many-lobed Pepper Treelet (Piper platylobum)
This species was restricted to mountain forest at the western slopes of the Andes in the province Pichincha, Ecuador, where it was found at elevations between 1000 and 1600 m.
The species is known exclusively from a single collection from the year 1898 and is most likely already extinct.
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edited: 27.11.2018
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
Latticed Pepper Tree (Piper clathratum)
This species was restricted to the slopes of the Pichincha volcano in the province of Pichincha in Ecuador, it appears to be known exclusively from material that was collected about one century ago.
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edited: 27.11.2018
Gualea Pepper Tree (Piper gualeanum)
This species is known exclusively from material that was collected about a century ago in the Pichincha Province of Ecuador.
The Gualea Pepper Tree is one of only 10 species in its genus that bears peltate leaves.
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edited: 27.11.2018