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Fremont's western rosinweed

Calycadenia fremontii

Also called Fremont's tackweed, Fremont's calycadenia, Klamath calycadenia, Frémont's western rosinweed

Fremont's western rosinweed
Photo: (c) Chloe and Trevor Van Loon, some rights reserved (CC BY), CC BY 4.0
Family
Asteraceae (Daisy family)
Grows as
Annual
Native range
Oregon to California
Climate
temperate

About

Calycadenia fremontii is a species of flowering plant in the daisy family known by the common name Frémont's western rosinweed (after John C. Frémont). It is native to southwestern Oregon (Josephine + Jackson Counties) and northern California (mostly north of Napa and Placer Counties but with a few isolated populations in Santa Clara and Tuolumne Counties). It is a common member of the flora in several types of habitat in the mountains, foothills, and valleys. This annual plant is variable in appearance.

Calycadenia fremontii produces a rigid, erect, hairy stem reaching a top height anywhere between 10 centimeters (2 inches) and one meter (40 inches). The leaves are linear in shape and arranged alternately along the stem, especially on the lower part. The largest is up to 8 centimeters long.

Other Calycadenia plants

Hoover's western rosinweed · Small-flowered calycadenia · Soft western rosinweed · Sticky western rosinweed · Butte County western rosinweed · Smallflower western rosinweed · Spiked western rosinweed · Oregon western rosinweed · Dwarf western rosinweed · Western rosinweed

Text excerpted from the Wikipedia article Calycadenia fremontii by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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