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2016 Annual Meeting!

Volume 1 of the Flora of Oregon now available for pre-order!

The Oregon Flora Project will be publishing the first volume in late summer.

Volume 1 presents treatments of the pteridophytes, gymnosperms, and monocots-1,054 taxa. The taxonomic treatments include dichotomous keys, family and generic synopses, full taxon descriptions, Oregon Range maps and illustrations.

In addition, a chapter "Ecology of Oregon" describes the state's 11 ecoregions and predominant habitats. Another complementary chapter describes 50 sites-organized by ecoregion-to explore; these are accompanied by 73 beautiful color photographs.

Yet more additional chapters contain biographical sketches of notable Oregon botanists and the story of the Oregon Flora Project.

Appendices are also included with detailed lists of plant taxa of interest to conservationists: rare and endangered species, endemics, taxa limited to a single ecoregion, and those not collected during the previous 50 years.

Welcome to!

  • Whether you're a first-timer or a regular visitor to our website, we hope you find what you need. If it's not here, or you have a suggestion for improvement or a problem report, .

Enjoying Oregon's native flora

  • Oregon has over 3600 species of native plants. Large or small, abundant or rare, each is unique and special.
  • enjoying Oregon's flora
    Student of the flora! (N. Jensen)
  • Ecoregions ranging from coastal sand dunes and mountain forest to prairie grasslands and alpine lava fields provide a myriad of habitats for these plants.
  • Local chapters hold meetings, field trips, and plant shows and sales for members and non-members alike, making available the knowledge and wonder of our native plants to everyone.

Conservation & preservation

  • Over 450 of our native plant species are listed as threatened or endangered by the Oregon Biodiversity Information Center.
  • Native plants provide food and support for wildlife that introduced plants cannot.
  • Conserving and preserving species and habitat for all native species, but especially those in danger, is a priority for NPSO.

Study and education

  • NPSO, both at the state level and through individual chapters, provides support for research about native plants.
  • Classes providing information about native plants are given by local chapters.
  • The NPSO Bulletin and our journal, Kalmiopsis, provide timely and in-depth coverage of issues relating to native plants.


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