# Endangered and Threatened Wildlife and Plants; Final Rule Designating Critical Habitat for Ambrosia pumila (San Diego ambrosia)
> **US Fish and Wildlife Service** · Final rule. · Published 2010-11-30 · Effective 2010-12-30 · 75 FR 74546
## Document
- **Document number:** 2010-29692
- **Category:** endangered-species
- **Sub-agency:** US Fish and Wildlife Service
- **Federal Register citation:** 75 FR 74546
- **CFR reference:** 50 CFR 17
- **Publication date:** 2010-11-30
- **Effective date:** 2010-12-30
- **Interior docket:** Docket No. FWS-R8-ES-2009-0054
## Abstract

We, the U.S. Fish and Wildlife Service (Service), are designating critical habitat for Ambrosia pumila (San Diego ambrosia) under the Endangered Species Act of 1973, as amended. Approximately 783 acres (317 hectares) are being designated as critical habitat for A. pumila in Riverside and San Diego counties, California.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/11/30/2010-29692/endangered-and-threatened-wildlife-and-plants-final-rule-designating-critical-habitat-for-ambrosia)
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