1. Erect subshrub with deep yellow flowers; Europe and Asia and North America
   - yellow avens, Geum alleppicum strictum

Type of: avens

• John Hancock
• John Hanning Speke
• John Harvard
• John Hasbrouck Van Vleck
• John Heming
• John Hemminge
• John Henry
• John Henry Newman
• John Henry O'Hara
• John Herschel
• John Herschel Glenn Jr.
• John Hope Franklin
• John Howard
• John Howard Northrop
• John Hoyer Updike
• John Huss
• John Huston
• John Irving
• John Jacob Astor
• John James Audubon
• John James Osborne
• John James Rickard Macleod
• John Jay
• John Joseph McGraw
• John Joseph Pershing