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Calycadenia micrantha
Also called Oregon Western Rosinweed
Small-flowered calycadenia is an uncommon annual wildflower in the daisy family, endemic to California and known from scattered sites in several counties. It was described as a species in 2004 and was previously lumped with Calycadenia truncata.
Calycadenia micrantha is an uncommon species of flowering plant in the family Asteraceae known by the common name small-flowered calycadenia. It is endemic to California, where it is known from about 13 occurrences that are widely spread over several counties, including Napa, Siskiyou, Shasta, Mendocino, Trinity, and Monterey Counties, with several populations known in Lake County. It was described to science as a species in 2004. Some specimens of the plant had previously been included within the description of its relative, Calycadenia truncata. The fact that it has been found in relatively far-flung locations suggests it could easily be present in other areas between them and, as a newly classified species, has simply not been reported yet.
This annual plant produces a slender purplish stem 10 to 50 centimeters tall. The hairy leaves are 2 to 5 centimeters long.
Fremont's western rosinweed · Hoover's western rosinweed · 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 micrantha by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
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.
