Pogogyne tenuiflora is an extinct species of annual plant in the mint family. Endemic to Guadalupe Island in the eastern Pacific, the Guadalupe mesa mint was only known from a single specimen collected by Edward Palmer in 1875. The species was described from Palmer's specimens by Asa Gray in 1876.[1][2]
| Pogogyne tenuiflora | |
|---|---|
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| A specimen of Pogogyne tenuiflora collected by Edward Palmer, at Royal Botanic Gardens, Kew. | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Lamiaceae |
| Genus: | Pogogyne |
| Species: | †P. tenuiflora
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| Binomial name | |
| †Pogogyne tenuiflora | |
| Synonyms[1] | |
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Pogogyne tenuiflora is a small, aromatic annual herb, with inflorescences consisting of flowers in bracteate verticils forming dense terminal spikes. The corollas are blue-purple and tubular, with an erect, entire upper lip and a spreading 3-lobed lower lip. The corollas measure 10–14 mm (0.39–0.55 in) long. The lower pair of stamens measure 3–4 mm (0.12–0.16 in) long. The style is bearded for about 3 mm (0.12 in) below the branches.[3][4] The two sterile upper anthers place this species within the Hedeomoides subgenus of Pogogyne, which was recognized as its own genus by John Isaac Briquet in 1896.[5][6]
During his visit, Palmer only saw this species very rarely among the sagebrush habitat on the eastern side of the island.[7] By 1875, the feral goats, introduced years before by humans, had already started to devastate the environment of the island, leaving Palmer as the only person to document a number of species on the island that have also gone extinct, like the paleo-endemic monotypic olive relative Hesperelaea palmeri.[6][2]
Ira Wiggins thought P. tenuiflora to 'probably' be extinct in his 1980 flora of the Baja California peninsula (including Guadalupe Island).[4] Reid Moran considered P. tenuiflora to be 'undoubtedly' extinct in his 1996 treatise on the flora of the island.[6] The San Diego Natural History Museum considers this species as 'likely' extinct.[2] A 2013 phylogenetic study of the genus considers the species to be presumed extinct.[8]
References
edit- ^ a b "Pogogyne tenuiflora". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2024-05-24.
- ^ a b c Rebman, Jon P.; Gibson, Judy; Rich, Karen (15 November 2016). "Annotated Checklist of the Vascular Plants of Baja California, Mexico" (PDF). Proceedings of the San Diego Society of Natural History. 45. San Diego Natural History Museum: 6, 180 – via San Diego Plant Atlas.
- ^ Gray, Asa (1876). "Miscellaneous Botanical Contributions". Proceedings of the American Academy of Arts and Sciences. 11: 108 – via Biodiversity Heritage Library.
- ^ a b Wiggins, Ira L. (1980). Flora of Baja California. Stanford, Calif.: Stanford University Press. p. 429. ISBN 0-8047-1016-3. OCLC 6284257.
- ^ Engler, Heinrich Gustav Adolf; Prantl, Karl Anton Eugen (1896) Naturlichen Pflanzenfamilien 4, Abt. 3a: 295
- ^ a b c Moran, Reid (1996). The Flora of Guadalupe Island. California Academy of Sciences. pp. 40, 43, 46, 114. ISBN 0-940228-40-8.
- ^ Watson, Sereno (1876). "Botanical Contributions". Proceedings of the American Academy of Arts and Sciences. 11: 105–121 – via Biodiversity Heritage Library.
- ^ Silveira, Michael A.; Simpson, Michael G. (2013-09-12). "Phylogenetic Systematics of the Mesa Mints: Pogogyne (Lamiaceae)". Systematic Botany. 38 (3): 782–794. doi:10.1600/036364413X670313.