Eriophyllum congdonii

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Eriophyllum congdonii
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Eriophyllum
Species: E. congdonii
Binomial name
Eriophyllum congdonii

Eriophyllum congdonii, known by the common name Congdon's woolly sunflower, is a rare species of flowering plant in the aster family.


Eriophyllum congdonii is endemic to the mountains of central Mariposa County, California, where it grows along the valley of the Merced River as it flows through Yosemite National Park.


Eriophyllum congdonii is an annual herb growing mostly erect with branching stems up to 30 centimeters long. The woolly, whitish leaves are 1 to 4 centimeters long and may have a few shallow lobes.

The inflorescence produces one flower head containing many glandular yellow disc florets and 8 to 10 yellow ray florets each 3 to 5 millimeters long.

The fruit is a rough-haired achene with a tiny, scaly pappus.

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