Calflora
Taxon  Report   11209    
Carrichtera annua  (L.) DC.
Wards weed
Carrichtera annua, a dicot, is an annual herb that is not native to California.
Cal-IPC rating: Moderate
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
Observation Search
(97 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Family: Brassicaceae  
Genus: Carrichtera

More information about  Carrichtera annua

Ward's weed threatens to spread across Southwest: The invader was first found in Carlsbad, near San Diego, about 2008 by a botanist working in a habitat preserve along Alicante Road in the La Costa area.

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2021. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 07/29/2021).