# Endangered and Threatened Wildlife and Plants; Determination of Threatened Status for the Plant Helianthus paradoxus (Pecos Sunflower)
> **US Fish and Wildlife Service** · Final rule. · Published 1999-10-20 · Effective 1999-11-19 · 64 FR 56582
## Document
- **Document number:** 99-27186
- **Category:** endangered-species
- **Sub-agency:** US Fish and Wildlife Service
- **Federal Register citation:** 64 FR 56582
- **CFR reference:** 50 CFR 17
- **Publication date:** 1999-10-20
- **Effective date:** 1999-11-19
## Abstract

We, the Fish and Wildlife Service (Service) determine Helianthus paradoxus (Pecos or puzzle sunflower) to be a threatened species under the authority of the Endangered Species Act of 1973, as amended (Act). This species is dependent on desert wetlands for its survival. It is known from 22 sites in Cibola, Valencia, Guadalupe, and Chaves counties, New Mexico, and from 3 sites in Pecos and Reeves counties, Texas. Threats to this species include drying of wetlands from groundwater depletion, alteration of wetlands (e.g. wetland fills, draining, impoundment construction), competition from non-native plant species, excessive livestock grazing, mowing, and highway maintenance. This rule implements the Federal protection and recovery programs of the Act for this plant.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/10/20/99-27186/endangered-and-threatened-wildlife-and-plants-determination-of-threatened-status-for-the-plant)
---
*AI Analytics · CC0 1.0*