Hymenoxys vaseyi

Hymenoxys vaseyi
Conservation status
Imperiled  (NatureServe) [1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Hymenoxys
Species:	H. vaseyi
Binomial name
Hymenoxys vaseyi (A.Gray) Cockerell
Synonyms [2]
Homotypic synonyms Actinea vaseyi(A.Gray) Kuntze Actinella vaseyiA.Gray Picradenia vaseyi(A.Gray) Greene

Hymenoxys vaseyi is a species of flowering plant in the daisy family Asteraceae. It is native to the Southwestern United States. The specific epithet vaseyi honors the American plant collector George Richard Vasey (not to be confused with his father George Vasey) who made extensive collections in the region in 1880 and 1881. The species is commonly called Vasey's rubberweed.

Description

Hymenoxys vaseyi is a perennial herb up to 60 cm (2.0 ft) tall. One plant can produce as many as 50 flower heads in a branching array. Each head has 8-11 yellow ray flowers and 25-80 tiny yellow disc flowers. ^{[3] [4]}

Taxonomy

Hymenoxys vaseyi was first described as Actinella vaseyi by the American botanist Asa Gray in 1882. ^[5] The type specimen was collected by George Richard Vasey in the Organ Mountains of New Mexico in 1881. ^[6] The American botanist Theodore Dru Alison Cockerell placed Actinella vaseyi in genus Hymenoxys in 1904. ^[7] As of January 2025 ^[update] , Hymenoxys vaseyi(A.Gray) Cockerell is a widely accepted name. ^{[2] [8]}

Distribution and habitat

Hymenoxys vaseyi grows in open areas, generally at the edges of forests at elevations of 2,100–2,800 meters (6,900–9,200 ft). It is native to the southwestern United States, primarily in New Mexico with a few populations in extreme western Texas (El Paso County). ^{[3] [9]}

References

1. NatureServe (3 January 2025). "Hymenoxys vaseyi". NatureServe Explorer. Arlington, Virginia. Retrieved 16 January 2025.
2. "Hymenoxys vaseyi(A.Gray) Cockerell". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 11 January 2025.
3. Bierner, Mark W. (2006). "Hymenoxys vaseyi". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 21. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
4. Cockerell (1904), p. 493–494.
5. "Actinella vaseyiA.Gray". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens . Retrieved 11 January 2025.
6. Gray (1882), pp. 219–220.
7. "Hymenoxys vaseyi(A.Gray) Cockerell". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens . Retrieved 11 January 2025.
8. "Hymenoxys vaseyi(A.Gray) Cockerell". WFO Plant List. Retrieved 15 January 2025.
9. "Hymenoxys vaseyi". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Retrieved 15 January 2025.

Bibliography

• Cockerell, T. D. A. (1904). "The North American species of Hymenoxys". Bulletin of the Torrey Botanical Club. 31 (9): 461–509. Retrieved 15 January 2025.
• Gray, Asa (1882). "Contributions to North American botany". Proceedings of the American Academy of Arts and Sciences. 17: 163–230. Retrieved 11 January 2025.

External links

• "Hymenoxys vaseyi(A. Gray) Cockerell". SEINet. Retrieved 15 January 2025.