1. Narrow and long and pointed; as pine leaves
   - acerate, acicular, needle-shaped

See also: simple, unsubdivided

• genus Jatropha
• genus Javanthropus
• genus Jordanella
• genus Juglans
• genus Junco
• genus Juncus
• genus Juniperus
• genus Jynx
• genus Kakatoe
• genus Kalmia
• genus Kalotermes
• genus Katsuwonus
• genus Kennedia
• genus Kennedya
• genus Kenyapithecus
• genus Keteleeria
• genus Khaya
• genus Kiggelaria
• genus Kinosternon
• genus Kirkia
• genus Klebsiella
• genus Knightia
• genus Kniphofia
• genus Kobus
• genus Kochia