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Taxon  Report  
Hemizonia congesta  DC.  ssp. lutescens  (Greene) Babc. & H. M. Hall
Hayfield tarweed
Hemizonia congesta ssp. lutescens is an annual herb that is native to California.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Parent: Hemizonia congesta
Genus: Hemizonia
Family: Asteraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Northern Coastal Scrub, Valley Grassland
Name Status:
Accepted by JEF

Alternate Names:
JEFHemizonia lutescens
ICPNHemizonia multicaulis ssp. vernalis
Information about  Hemizonia congesta ssp. lutescens from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (HECOC2)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[flowersofmarin.com] Odor, Stickiness: A pungent odor wafts across the flower-filled summer meadow. The smell is coming from the abundant yellow daisy-like flowers that are scattered everywhere. This is hayfield tarweed, or Hemizonia congesta. They look pretty, with three-lobed ray flowers encircling a soft yellow center. But if you pick one up you will get a sticky souvenir - this plant is incredibly resinous, and the smell and the stickiness will follow you until you can scrub off. Low-slung dogs will come back from hikes needing a bath, and the fragrance (strong but not unpleasant) lingers on fur and clothes. (contributed by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/22/2024).