1. A small fern with slim green fronds; widely distributed in cool parts of northern hemisphere
   - green spleenwort

Type of: spleenwort

• undisputed
• undisputedly
• undissolved
• undistinguishable
• undistinguished
• undistorted
• undistributed
• undisturbed
• undiversified
• undividable
• undivided
• undivided interest
• undivided right
• undo
• undoable
• undock
• undocumented
• undoer
• undogmatic
• undogmatical
• undoing
• undomestic
• undomesticated
• undone
• undoubted