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Eremothamnus

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Eremothamnus
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Cichorioideae
Genus: Eremothamnus
O.Hoffm.
Species:
E. marlothianus
Binomial name
Eremothamnus marlothianus

Eremothamnus is a monotypic genus of shrubs in the family Asteraceae. Its only species is Eremothamnus marlothianus.[2] It is native to the coastal desert of Namibia.[3] It is a small shrub with spiny leaves.

Taxonomy and systematics

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The genus Eremothamnus was erected in 1889 by Otto Hoffmann, when he named its only species, Eremothamnus marlothianus.[4] The specific epithet is for Rudolf Marloth (1855–1931), a South African botanist, pharmacist, and analytical chemist. The generic name is derived from the Greek words eremos and thamnos. Hoffmann did not give an etymology for the name and it has been supposed that it means "solitary shrub",[5] but "desert shrub" is also a possible interpretation.

Eremothamnus is closely related to Hoplophyllum.[6][7] These two genera form a clade in the subfamily Cichorioideae.[8][9] Some authors have placed Eremothamnus in the tribe Arctotideae.[2][10] In some of the more recent classification systems, Eremothamnus and Hoplophyllum constitute the tribe Eremothamneae.[11]

References

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  1. ^ Craven, P. (2004). "Eremothamnus marlothianus". IUCN Red List of Threatened Species. 2004: e.T46760A11075005. doi:10.2305/IUCN.UK.2004.RLTS.T46760A11075005.en. Retrieved 16 November 2021.
  2. ^ a b Per Ola Karis. 2007. "Arctotideae" pages 200–207. In: Klaus Kubitzki (series editor); Joachim W. Kadereit and Charles Jeffrey (volume editors). The Families and Genera of Vascular Plants volume VIII. Springer-Verlag: Berlin; Heidelberg, Germany. ISBN 978-3-540-31050-1
  3. ^ Robinson, Harold E. (1994). "Notes on the tribes Eremothamneae, Gundelieae, and Moquinieae, with comparisons of their pollen". Taxon. 43 (1): 33–44. doi:10.2307/1223458. JSTOR 1223458.
  4. ^ Otto Hoffmann. 1889. "Plantae Marlothianae. Ein Beitrag zur Kentniss der Flora Südafrikas" Botanische Jarhbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 10:278.
  5. ^ Umberto Quattrocchi. 2000. CRC World Dictionary of Plant Names volume II, page 929. CRC Press: Boca Raton; New York; Washington,DC;, USA. London, UK. ISBN 978-0-8493-2676-9 (vol. II).
  6. ^ Per Ola, Karis (1992). "Hoplophyllum DC., the sister group to Eremothamnus O.Hoffm. (Asteraceae)?". Taxon. 41 (2): 193–198. doi:10.2307/1222327. JSTOR 1222327.
  7. ^ Per Ola, Karis; Eldenäs, P.; Källersjö, M.; Eldenas, Pia; Kallersjo, Mari (2001). "New evidence for the systematic position of Gundelia L. with notes on delimitation of Arctoteae (Asteraceae)". Taxon. 50 (1): 105–114. doi:10.2307/1224514. JSTOR 1224514.
  8. ^ Funk, Vicki A.; Chan, Raymund; Keeley, Stirling C. (2004). "Insights into the evolution of the tribe Arctoteae (Compositae: subfamily Cichorioideae s.s.) using trnL-F, ndhF, and ITS". Taxon. 53 (3): 637–655. doi:10.2307/4135440. JSTOR 4135440.
  9. ^ Wortley, Alexandra H.; Funk, Vicki A.; Skvarla, John J. (2008). "Pollen and the Evolution of Arctotideae (Compositae)". Botanical Review. 74 (3): 438–466. Bibcode:2008BotRv..74..438W. doi:10.1007/s12229-008-9014-8. S2CID 24494447.
  10. ^ Bergqvist, Gullevi; Bremer, Birgitta; Bremer, Kåre (1995). "Chloroplast DNA variation and the tribal position of Eremothamnus (Asteraceae)". Taxon. 44 (3): 341–350. doi:10.2307/1223404. JSTOR 1223404.
  11. ^ Vicki A. Funk, Alfonso Susanna, Tod F. Stuessy, and Randall J. Bayer. 2009. Systematics, Evolution and Biogeography of the Compositae. IAPT (International Association for Plant Taxonomy). ISBN 978-3-9501754-3-1.
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