Sodiro’s Diastema was described in 1913; it is known only by the type material that was collected in the 19th century at an unknown locality in Ecuador.
The species has not been rediscovered since and might well be extinct.
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edited: 20.08.2022
Upolu Cyrtandra (Cyrtandra mamolea)
This somewhat enigmatic Upolu Cyrtandra was restricted to the island of ‘Upolu, Samoa.
The species was named for the vernacular Samoan name given to several members of this genus – mamolea.
The Upolu Cyrtandra might now be extinct. [1]
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References:
[1] Art Whistler: Biodiversity Conservation Lessons Learned Technical Series. 2: The Rare Plants of Samoa. Conservation International 2011
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edited: 10.09.2019
Bell-flowered Cyrtandra (Cyrtandra campanulata)
The Bell-flowered Cyrtandra occurred in the tropical rainforests of the islands of Savai’i and ‘Upolu, Samoa.
The species had very large, up to 4 cm long hanging, bell-shaped greenish flowers.
The Bell-flowered Cyrtandra was apparently last collected in 1905 and is now most likely extinct. [1]
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References:
[1] Art Whistler: Biodiversity Conservation Lessons Learned Technical Series. 2: The Rare Plants of Samoa. Conservation International 2011
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edited: 10.09.2019
Notched Cyrtandra (Cyrtandra crenata)
The Notched Cyrtandra was known to occur in the rainforests of the Waikane-Kahana area in the windward Wai’anae Mountains as well as in the Ko’olau Mountains of O’ahu, Hawaiian Islands.
The species was last recorded in 1934 (or 1947 according to other sources) and is now thought to be extinct. [1]
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References:
[1] J. K. Obata: Threatened and endangered native flora of O’ahu. Newsletter of the Hawaiian Botanical Society 27(2): 39-82. 1988
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edited: 10.09.2019
Olona Cyrtandra (Cyrtandra olona)
The Olona Cyrtandra was described in 1922, the species is known from only a single specimen that had been collected in 1909 somewhere in the Wahiawa Mountains on the island of Kaua’, Hawaiian Islands.
The species reached a height of 60 cm, the stem was unbranched and completely glabrous, the opposite leaves reached lengths of 15 to 16 cm and a wide of about 12 cm, they were broadly ovate, obtusely rounded at the apizes and truncate at the bases, their margins were crenate except for the bases. They were very dark green above and paler below.
The Olona Cyrtandra was named for the fact that it superficially resembled another endemic Hawaiian plant from the nettle family, the olona (Touchardia latifolia Gaudich.) [1]
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References:
[1] Charles N. Forbes: New Hawaiian plants. Bishop Museum Occasional Papers 7: 31-39. 1922
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edited: 10.09.2019
Frosted Cyrtandra (Cyrtandra pruinosa)
The Frosted Cyrtandra is apparently known only from one collection that was made in 1933 off the ‘Aiea trail in the Ko’olau Mountains of O’ahu, Hawaiian Islands.
The species is now considered probably extinct. [1]
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References:
[1] J, K. Obata: Rare, threatened and endangered native flora of O’ahu. Newsletter of the Hawaiian Botanical Society 27(2): 39-82. 1988
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edited: 10.09.2019
Gürke’s Cyrtandra (Cyrtandra guerkeana)
Gürke’s Cyrtandra was restricted to the high altitude rainforests on the island of Savai’i, Samoa, where it could be found at elevation of 1200 to 1600 m.
The species was last seen in 1906 and is now considered extinct.
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Referenzen:
[1] Art Whistler: The Rare Plants of Samoa. Biodiversity Conservation Lessons Learned Technical Series 2. Conservation International, Apia, Samoa 2011
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edited: 10.09.2019
Funk’s Cyrtandra (Cyrtandra funkii)
Funk’s Cyrtandra was restricted to the rainforests of the island of ‘Upolu, Samoa.
The species was last seen in 1893 and is now extinct. [1]
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Referenzen:
[1] Art Whistler: The Rare Plants of Samoa. Biodiversity Conservation Lessons Learned Technical Series 2. Conservation International, Apia, Samoa 2011
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edited: 10.09.2019