Eriophyllum ambiguum explained

Eriophyllum ambiguum is a species of flowering plant in the family Asteraceae known by the common name beautiful woolly sunflower. It is native to the deserts and adjacent hills of southern and eastern California, northwestern Arizona, and southern Nevada.^{[1] [2]}

Eriophyllum ambiguum grows in chaparral, woodlands, and desert habitat. It is an annual herb growing decumbent or upright with stems up to 30 centimeters (1 foot) long. The leaves are widely lance-shaped or oblong and sometimes have lobes, with woolly hairs on both sides. The inflorescence produces one flower head containing many yellow disc florets and 6 to 10 yellow, white, or bicolored ray florets which are each 2 millimeters to one centimeter (0.08-0.40 inches) long. The fruit is a rough-haired achene which may have a very small pappus.^[3]

Varieties^{[3] [4] [2]}

• Eriophyllum ambiguum var. ambiguum - California, mostly in Kern County
• Eriophyllum ambiguum var. paleaceum (Brandegee) Ferris - California, Nevada, Arizona

External links

• [Calflora: ''Eriophyllum ambiguum'']
• Jepson Manual Treatment
• United States Department of Agriculture Plants Profile
• Calphotos Photo gallery, University of California

Notes and References

1. http://bonap.net/MapGallery/County/Eriophyllum%20ambiguum.png Biota of North America Program 2014 county distribution map
2. http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Eriophyllum+ambiguum Calflora taxon report, University of California, Eriophyllum ambiguum (A. Gray) A. Gray, annual woolly sunflower, beautiful woolly sunflower
3. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066706 Flora of North America, Eriophyllum ambiguum (A. Gray) A. Gray
4. http://www.theplantlist.org/tpl1.1/record/gcc-82609 The Plant List, Eriophyllum ambiguum (A.Gray) A.Gray