Azuay Polypody (Polypodium argyrolepis)
This fern species is known exclusively from the type material that was collected in the 19th century somewhere in the Azuay Province of Ecuador, an exact locality is not known.
The species was never found again and is presumed to be possibly extinct.
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edited: 15.04.2019
Tag Archives: Polypodiaceae
Leptochilus wallii (Baker) C. Chr.
Wall’s Leptochilus Fern (Leptochilus wallii)
This species is endemic to the island of Sri Lanka where it is known from only a single locality.
The type locality is now destroyed and thus this species is very likely extinct. [1][2]
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References:
[1] Atsushi Ebihara; Christopher Roy Fraser-Jenkins; Barbara S. Parris; Xian-Chun Zhang; Yue-Hong Yang; Wen-Liang Chiou; Ho-Ming Chang; Stuart Lindsay; David Middleton; Masahiro Kato; Titien Ngatinem Praptosuwiryo; Victor B. Amoroso; Julie F. Barcelona; Rajapaksha Haddokara Gedara Ranil; Chan-Ho Park; Noriaki Murakami; Akihiko Hoya: Rare and Threatened Pteridophytes of Asia 1. An Enumeration of Narrowly Distributed Taxa1. Bulletin of the National Museum of Nature and Science, Ser. B 38(3): 93–119. 2012
[2] R. H. G. Ranil; C. R. Fraser-Jenkins; D. K. N. G. Pushpakumara; D. S. A. Wijesundara; B. S. Parris: The endemic pteridophyte flora of Sri Lanka: Taxonomy, geographical distribution and conservation status. Indian Fern Journal 33: 1-36. 2016
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edited: 02.05.2022
Polypodium mixtum Sodiro
Mixed Polypody (Polypodium mixtum)
The Mixed Polypody is known exclusively by the type that was collected in the 19th century somewhere in Ecuador, an exact locality is not known.
The species was never found since its description and may already be extinct.
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edited: 15.04.2019
Oreogrammitis austroindica (Parris) Parris
South Indian Grammitis Fern (Oreogrammitis austroindica)
The South Indian Grammitis Fern was described in 2001; it is known only from the type material that had been collected in the 19th century in Tamil Nadu, India.
The species might now be extinct.
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References:
[1] Atsushi Ebihara; Christopher Roy Fraser-Jenkins; Barbara S. Parris; Xian-Chun Zhang; Yue-Hong Yang; Wen-Liang Chiou; Ho-Ming Chang; Stuart Lindsay; David Middleton; Masahiro Kato; Titien Ngatinem Praptosuwiryo; Victor B. Amoroso; Julie F. Barcelona; Rajapaksha Haddokara Gedara Ranil; Chan-Ho Park; Noriaki Murakami; Akihiko Hoya: Rare and Threatened Pteridophytes of Asia 1. An Enumeration of Narrowly Distributed Taxa1. Bulletin of the National Museum of Nature and Science, Ser. B 38(3): 93–119. 2012
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edited: 02.05.2022
Grammitis recondita C. V. Morton
Concealed Grammtis Fern (Grammitis recondita)
Der Concealed Grammtis Fern, described in 1971, is a middle-sized epiphytic fern species that was only ever recorded once in the 19th century near of what today is the town of Archidona in the Napo Province in central Ecuador. [1]
The species was never found again since and is now considered most likely extinct.
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References:
[1] C. V. Morton: Supplementary notes on Grammitis in Ecuador. Phytologia 22(2): 71-82. 1971
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edited: 12.06.2020
Polypodium rimbachii Sodiro
Rimbach’s Polypody (Polypodium rimbachii)
Rimbach’s Polypody is apparently known only from bibliographic references that were given to the type, which again was collected at a place named Quinoas in the Azuay Province of Ecuador and wich apparently is now lost.
The area from where the type material was collected is now very affected by deforestation and the species, if it was one, may indeed be extinct.
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edited: 15.04.2019