Asteraceae
Santa Cruz tarplant
Holocarpha macradenia
- Family
- Asteraceae
- Genus
- Holocarpha
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Common names
By language (1)
- English
- Santa Cruz tarplant, Santa Cruz tarweed
Synonyms
- Hemizonia macradenia DC.
Flowers
- In flower
- June to September (from 56 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Lower 48 states: native
Photos
FlowerPhoto: Kyle Nessen, CC0, from iNaturalist 
FlowerPhoto: rockybajada, CC0, from iNaturalist 
FlowerPhoto: Scott Yarger, CC0, from iNaturalist 
FlowerPhoto: Nora Bales, CC0, from iNaturalist 
FlowerPhoto: D Defreese, CC BY 4.0, from iNaturalist 
FlowerPhoto: Ryan Donnelly, CC BY 4.0, from iNaturalist 
FlowerPhoto: Nora Bales, CC0, from iNaturalist 
FruitPhoto: John Kenny, CC0, from iNaturalist 
Photo: Brad Taylor, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Dean Wm. Taylor, CC BY 2.0, from Wikimedia Commons
More in Holocarpha
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.