Coronavirus (COVID-19)

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Stay up-to-date on operations adjustments and temporary closure of TPWD offices, state parks, recreation facilities and water access points due to COVID-19. Please follow guidance from local authorities, Governor Greg Abbott and the Texas Department of State Health Services.


Part III: Plants

Tree Rings

Additional Information:

Ilo Hiler
1983 Part III: Plants. Young Naturalist. The Louise Lindsey Merrick Texas Environment Series, No. 6. Texas A&M University Press, College Station.