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
Guayaquil Mikania (Mikania iserniana)
This species is known only on the basis of the type material which was collected in 1864 near the city of Guayaquil in the Guayas Province, Ecuador.
The vegetation of the region is now highly destroyed due to urban and agricultural development, the species was never recorded since the collection of the type material and is thus probably extinct.
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edited: 25.04.2021
Rio Daule Mikania (Mikania tafallana)
This species is known only on the basis of the type material which was collected sometimes before 1818 in the vicinity of the Río Daule near the city of Guayaquil in the Guayas Province, Ecuador.
The vegetation of the region is now highly destroyed due to urban and agricultural development, the species was never recorded since the collection of the type material and is thus probably extinct.
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edited: 25.04.2021
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
Blunt-leaved Tree Heliotrope (Tournefortia obtusiflora)
This small treelet is known from a single collection from the first half of the 19th century.
The Blunt-leaved Tree Heliotrope was probably restricted to dry coastal forest, most of which has been altered due to the expansion of Guayaquil, now the largest city in Ecuador.
The species is most likely 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
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
Sharp-leaved Psychotria (Psychotria acutiflora)
The Sharp-leaved Psychotria is or was restricted to the dry coastal forests in the Guayaquil area in the Guayas Province, Ecuador.
The species was not found again and might well be extinct.
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edited: 03.09.2020
Guayaquil Oxeye (Wedelia oxylepis)
This species is known only from the typus material, which was collected in the year 1918 near the city of Guayaquil in the Ecadorian province of Guayas.
The natural vegetation in this area is now nearly completely destroyed, and therefore the Guayaquil Oxeye is most probably extinct.
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edited: 17.05.2019