This category includes the native flora of the Northeastern United States, in North America. Taxa of the lowest rank are always included. Higher taxa are included only if endemic.

• For the purposes of this category, the "Northeastern United States" is defined in accordance with the World Geographical Scheme for Recording Plant Distributions. That is, the geographic region is defined by the political boundaries of its constituents:
• Connecticut
• Indiana
• Maine
• Massachusetts
• Michigan
• New Hampshire
• New Jersey
• New York
• Ohio
• Pennsylvania
• Rhode Island
• Vermont
• West Virginia

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