''Iva hayesiana'' is a species of flowering plant in the family
Asteraceae known by the common names San Diego marsh-elder and San Diego povertyweed.
It is native to northwestern
Baja California and southern California, in
San Diego,
Orange,
Los Angeles,
Ventura, and
San Bernardino Counties.
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.
[
The flowers are nearly invisible; male flowers have translucent corollas and simple yellow ]stamen
The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10
Morphology and terminology
A stamen typically consists of a stalk called the filame ...
s and female flowers, if they occur, lack corollas altogether. This is a plant of mineral-rich waterways such as intermittent streams and alkali flats
A dry lake bed, also known as a playa, is a basin or depression that formerly contained a standing surface water body, which disappears when evaporation processes exceeds recharge. If the floor of a dry lake is covered by deposits of alkaline c ...
.[Flora of North America, ''Iva hayesiana'' A. Gray, 1876. ]
/ref>
Conservation
Threats to the plant include development of coastal habitat and waterways.[''Iva hayesiana''.]
NatureServe. 2012. It is a .
;Cultivation
This species is recommended for use as an ornamental plant in fire-resistant landscaping in Southern California.
Fire, plants, defensible space and you.
' County of San Diego, Department of Planning and Land Use. 2004.
References
External links
*
Jepson Manual TreatmentUnited States Department of Agriculture Plants ProfilePhoto gallery
hayesiana
''Hayesiana'' is a genus of moths in the family Sphingidae. It was described by David Stephen Fletcher in 1982.
Species
* '' Hayesiana farintaenia'' Zhu & Wang, 1997
* '' Hayesiana triopus'' ( Westwood, 1847)
Macroglossini
Sphingidae gen ...
Flora of Baja California
Flora of California
Natural history of the California chaparral and woodlands
Natural history of San Diego County, California
Plants described in 1876
{{Heliantheae-stub