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
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
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
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
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
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
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
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