Start receiving our award-winning magazine today!



Atoll Plant Life 

Palmyra is home to one of the last surviving stands of Pisonia beach forest in U.S. Pacific. 

Palmyra is the only undeveloped forested atoll in the U.S. tropical Pacific. It is situated in an area known as the intertropical convergence zone, where trade winds from the Northern Hemisphere and Southern Hemisphere meet, just above the equator. As the winds meet, they create a phenomenon known as the doldrums: light winds and heavy precipitation. 

As a result, Palmyra receives more than 175 inches of rain annually and supports one of the region's last surviving stands of Pisonia gradis coastal forest. These gnarled white giants tower over 100 feet while rooted in coral and sand less than 10 feet above sea level.

Introduced coconut groves and a variety of native trees, ferns and shrubs are also abundant. 

Other Native Flora

  • Bird's nest fern
  • Tree heliotrope
  • Morning glory
  • Yellow nickers
  • St. Thomas bean
  • Naupaka
  • Fish poison tree
  • Bar bush
  • Hala
  • Herandia


Palmyra Atoll Homepage |

We’re Accountable

The Nature Conservancy makes careful use of your support.

More Ratings

x animal

Sign up for Nature eNews!

Sign Up for Nature e-News

Get our e-newsletter filled with eco-tips and info on the places you care about most.

Thank you for joining our online community!

We’ll be in touch soon with more Nature Conservancy news, updates and exciting stories.

Please leave this field empty

We respect your privacy. The Nature Conservancy will not sell, rent or exchange your e-mail address. Read our full privacy policy for more information. By submitting this form, you agree to the terms of use.