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Taxon  Report  
Carrichtera annua  (L.) DC.
Wards weed
Carrichtera annua is an annual herb that is not native to California.
Cal-IPC rating: moderate
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Observation Search
~139 records in California
redone or more occurrences
within a 7.5-minute quadrangle
DJJJASONAFMM

Bloom Period
Genus: Carrichtera
Family: Brassicaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Name Status:
Accepted by JEF

Information about  Carrichtera annua from other sources

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.

[Wikipedia] Macaronesia, North Africa, Western Asia to Iran & Saudi Arabia,: Carrichtera is a genus of flowering plants belonging to the family Brassicaceae. It has a single species, Carrichtera annua, commonly known as Ward's weed. Its native range is from Macaronesia across North Africa and Western Asia to Iran and Saudi Arabia, and in Portugal and Greece in southern Europe.[1] It has been introduced to Italy, Japan, Australia, New Zealand, and California,[1] where it is considered invasive.[2] (link added 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: 07/17/2024).