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Smallflower western rosinweed

Calycadenia pauciflora

Smallflower western rosinweed
Photo: Chloe and Trevor Van Loon, CC BY 4.0

Smallflower western rosinweed is a small, resin-coated annual wildflower from northern California's Coast Ranges, often found on serpentine soils. It is grown mainly by native plant enthusiasts and suits gardens that mimic dry, open, rocky habitats.

Family
Asteraceae (Daisy family)
Grows as
Annual
Light
Full sun
Water
Water sparingly once established; let the soil dry out between waterings.
Soil
Well-drained, lean or gritty soil; tolerates serpentine-type soils.
Temperature
Hardy in mild Mediterranean-type climates; protect from hard frost.
How easy
Moderate
Native range
California

About

Calycadenia pauciflora is a species of flowering plant in the family Asteraceae known by the common name smallflower western rosinweed. It is endemic to northern California, where it grows in the Coast Ranges north of the San Francisco Bay Area from Napa County to Tehama County, often on serpentine soils.

Calycadenia pauciflora is an annual herb producing a slender, crooked, branching stem coated with hairs, growing up to 50 centimeters (20 inches) tall. The leaves are linear in shape and up to 5 centimeters (2 inches) long. The inflorescence bears bracts studded with large resin glands and small clusters of flower heads. The hairy, glandular flower head has a center of a few disc florets and one or two white or red triple-lobed ray florets. Each ray floret has three lobes at the tip, the middle lobe being shortest.

Other Calycadenia plants

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

Text excerpted from the Wikipedia article Calycadenia pauciflora 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.

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