Tag Archives: Phyllostegia

Phyllostegia kahiliensis H. St. John

Kahili Phyllostegia (Phyllostegia kahiliensis)

The island of Kaua’i harbors seven Phyllostegia species, of which five are endangered to critically endangered, some of these species have populations of less then 10 individuals making them very vulnerable to the slightest disturbances like grazing by cattle etc.. [2]

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The Kahili Phyllostegia was described in 1987, the species is known from three collections (1974, 1983, and 1987) that originally were thought to be identical with Heller’s Phyllostegia (Phyllostegia helleri Sherff), but differ from that species by their retrorsely appressed pubescence.

The species had an extremely narrow geographic range, it was restricted to steep jagged ridges and precipitous side slopes just below the summit of Mt. Kahili on the island of Kaua’i, Hawaiian Islands.

The Kahili Phyllostegia was declared extinct in 2014, yet there is a slight chance that it might be rediscovered someday in one of the steep ravines of Mt. Kahili. [1][2]

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References:

[1] Warren L. Wagner: Nomenclator and review of Phyllostegia (Lamiaceae). Novon 9(2): 265-279. 1999
[2] Kenneth R. Wood: Delissea rhytidosperma H. Mann (Campanulaceae) and Phyllostegia kahiliensis H. St. John (Lamiaceae) possibly extinct on Kaua’i, Hawaiian Islands. Records of the Hawaii Biological Survey for 2014. Part I: Articles. Edited by Neal L. Evenhuis & Scott E. Miller. Bishop Museum Occasional Papers 116: 31-33. 2015

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edited: 24.09.2019

Phyllostegia hillebrandii H. Mann ex Hillebr.

Hillebrand’s Phyllostegia (Phyllostegia hillebrandii)

Hillebrand’s Phyllostegia was described in 1888, it is known from two collections from eastern Maui, Hawaiian Islands; one from Kula in the center -, and the other one from ‘Ulupalakua near the southern shore of the island.

The species is now extinct. [1]

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References:

[1] Warren L. Wagner: Nomenclator and review of Phyllostegia (Lamiaceae). Novon 9(2): 265-279. 1999

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edited: 24.09.2019

Phyllostegia glabra var. lanaiensis Sherff

Lanai Phyllostegia (Phyllostegia glabra var. lanaiensis)

The Lanai Phyllostegia was described in 1934 based on material that had been collected in 1914, it was restricted to the Kaiholena Gulch on Lana’ihale, the highest point on the island of Lana’i, Hawaiian Islands.

The plant is thought to have been seen sometimes in the 1980s, however, it is thought that this might rather have been the nominate form. [1]

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References:

[1] Warren L. Wagner: Nomenclator and review of Phyllostegia (Lamiaceae). Novon 9(2): 265-279. 1999

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edited: 24.09.2019

Phyllostegia variabilis Bitter

Coastal Phyllostegia (Phyllostegia variabilis)

The Coastal Phyllostegia or Variable Phyllostegia was described in 1900, the species was originally discovered on the island of Laysan but was subsequently also found on the Kure- and Midway atolls in the northwestern Hawaiian Islands.

Hugo H. Schauinsland wrote the first notes about this species, that he discovered in 1896.:

“Phyllostegia variabilis Bitter nov. sp. Here and there on the E and W side near the beach. The numerous small flowers appear first during winter, beginning in November. It is a herbaceous plant, with few unbranched runners which I found to be 3/4 to 1 m long.” [2]

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“… In 1896 it was scattered near the beach of the west and east sides (Schauinsland, 1899: 97). It was still present in small patches in 1903, mostly on the windward side (Christophersen and Caum, 1931: 11). it disappeared from Laysan before 1911.” [1]

The species is now completely extinct.

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References:

[1] Charles A. Ely; Roger B. Clapp: The natural history of Laysan Island, northwestern Hawaiian Islands. Atoll Research Bulletin 171. 1973
[2] Hugo H. Schauinsland: Three months on a coral island (Laysan); translated by Miklos D. F. Udvardy. Atoll Research Bulletin 432. 1996

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edited: 19.10.2020

Phyllostegia rockii Sherff

Rock’s Phyllostegia (Phyllostegia rockii)

Rock’s Phyllostegia was described in 1934, it was restricted to the slopes of the Haleakala volcano on eastern Maui, Hawai’i Islands.

The species is known from only three collections, the most recent of which was made in 1912, it is now considered extinct.

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References:

[1] Warren L. Wagner: Nomenclator and review of Phyllostegia (Lamiaceae). Novon 9(2): 265-279. 1999

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edited: 24.09.2019

Phyllostegia micrantha H. St. John

Small Phyllostegia (Phyllostegia micrantha)

The Small Phyllostegia was described in 1987, it is known only from the type that was collected in 1910 at a place named Popouwela on the eastern side of the Wai’anae mountains on the island of O’ahu, Hawai’i Islands.

The species is the smallest in its genus, it has small, elliptic, hirsute, 6 to 10 cm long leaves, the calyx of its flowers was only about 0,26 cm long. [1]

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References:

[1] Warren L. Wagner: Nomenclator and review of Phyllostegia (Lamiaceae). Novon 9(2): 265-279. 1999

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edited: 24.09.2019

Phyllostegia knudsenii Hillebr.

Knudsen’s Phyllostegia (Phyllostegia knudsenii)

Knudsen’s Phyllostegia, also known as Waimea Phyllostegia, was described in 1888, the species was known only from the type that had been collected in Waimea at the southwestern coast of Kaua’i, Hawaiian Islands. [1]

The species was rediscovered in 1995 in the Koai’e Canyon, yet this population appears to have subsequently disappeared as well. 

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References:

[1] Warren L. Wagner: Nomenclator and review of Phyllostegia (Lamiaceae). Novon 9(2): 265-279. 1999

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edited: 24.09.2019

Phyllostegia parviflora var. glabriuscula A. Gray

Hawaiian Small-flowered Phyllostegia (Phyllostegia parviflora var. glabriuscula)

The Hawaiian Small-flowered Phyllostegia was described in 1862, it was apparently restricted to a small area on private land on the slopes of Mauna Kea on the island of Hawai’i, Hawaiian Islands.

The form was last recorded in the late 1800s and is now considered extinct.

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References:

[1] Warren L. Wagner: Nomenclator and review of Phyllostegia (Lamiaceae). Novon 9(2): 265-279. 1999

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edited: 24.09.2019