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western rosinweed
Scientific Name: Calycadenia
Family: Asteraceae
Category: Dicot
Growth:
Duration:
Other Names:
Western Rosinweeds: A Botanical Overview
Western rosinweeds belong to the genus Calycadenia, a group of flowering plants within the Asteraceae (aster or daisy) family.
Considerations for Pets
- Some species are described as "odorous."
- Some species of the related genus Grindelia, also called rosinweeds, have resinous leaves and stems formerly used medicinally and can be poisonous.
Considerations for Children
- Some species are described as "odorous."
- Some species of the related genus Grindelia, also called rosinweeds, have resinous leaves and stems formerly used medicinally.
Taxonomy and Nomenclature
- Genus: Calycadenia
- Family: Asteraceae (Aster family)
- Species: The text mentions several species, including:
- Calycadenia spicata (Spiked Western Rosinweed)
- Calycadenia multiglandulosa (Sticky Western Rosinweed)
- Calycadenia truncata (Oregon Western Rosinweed)
- Calycadenia fremontii (Fremont's Western Rosinweed)
- Calycadenia pauciflora (Smallflower Western Rosinweed)
- Calycadenia mollis (Soft Western Rosinweed)
- Calycadenia hooveri (Hoover's Western Rosinweed)
- Synonyms/Alternative Names:
- Calycadenia mollis is also known as Soft calycadenia.
- Calycadenia truncata: USDA Symbol CATR3
Distribution and Habitat
- Calycadenia species are primarily native to California and Oregon.
- Specific locations mentioned:
- Central California (C. spicata)
- Northern California (Highway 16 for C. multiglandulosa)
- Southwestern Oregon (C. truncata)
- Yuba County (Klamath Western Rosinweed)
- Sierra Nevada, California (C. mollis)
- They can be found growing in various habitats, including saline swampy soils.
Morphological Characteristics
- Many Calycadenia species are described as forb/herbs, indicating they are non-woody plants that are not grasses.
- Calycadenia truncata is described as a slender, odorous plant with yellow flower heads.
Interactions with Other Organisms
- Calycadenia multiglandulosa (Sticky Western Rosinweed) is found alongside the Nursery Web Spider (Pisauridae).
Additional Information
- Some species are available for purchase as plants and seeds online and offline.
- Fertilizing shrubs in the spring can promote florid development for some species (e.g., Oregon Western Rosinweed, Hoover's Western Rosinweed).
- Calycadenia truncata should be positioned in a sunny spot.
Resources
- Dave's Garden is mentioned as a community for sharing gardening tips and ideas.
- CalPhotos is referenced for photographs of Calycadenia mollis.
- Discover Life has a page about the biology, natural history, ecology, identification, and distribution of Calycadenia truncata.