Iva hayesiana

Iva hayesiana is a species of flowering plant in the daisy family known by the common names San Diego marsh-elder and San Diego povertyweed.

Iva hayesiana

Vulnerable  (NatureServe)
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Iva
Species:
I. hayesiana
Binomial name
Iva hayesiana
Gray 1876

It is native to northwestern Baja California and southern California, in San Diego, Orange, Los Angeles, Ventura, and San Bernardino Counties.[1]

Description

Iva hayesiana is a shrubby perennial herb approaching one meter (40 inches) in height. Its green oval-shaped leaves are fleshy, glandular, aromatic, and 3 to 6 centimeters (1.2-2.4 inches) long.[2]

The flowers are nearly invisible; male flowers have translucent corollas and simple yellow stamens and female flowers, if they occur, lack corollas altogether. This is a plant of mineral-rich waterways such as intermittent streams and alkali flats.[2]

Conservation

Threats to the plant include development of coastal habitat and waterways.[3] It is a Vulnerable flora species in California.

Cultivation

This species is recommended for use as an ornamental plant in fire-resistant landscaping in Southern California.[4]

References
  1. Calflora taxon report, University of California, Iva hayesiana A. Gray San Diego marsh elder, San Diego povertyweed
  2. Flora of North America, Iva hayesiana A. Gray, 1876.
  3. Iva hayesiana. NatureServe. 2012.
  4. Fire, plants, defensible space and you. County of San Diego, Department of Planning and Land Use. 2004.
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