1. Coextensive with class Phaeophyceae; in some classifications subsumed in the division Heterokontophyta
   - Phaeophyta

Type of: division

• Jakob Liebmann Beer
• Jakob Ludwig Felix Mendelssohn-Bartholdy
• Jakob Ludwig Karl Grimm
• Jakob-Creutzfeldt disease
• Jakobson
• Jalalabad
• jalap
• jalapeño
• jalapeño pepper
• jalopy
• jalousie
• jam
• jam session
• jam-packed
• Jamaat ul-Fuqra
• Jamaica
• Jamaica apple
• Jamaica bayberry
• Jamaica caper tree
• Jamaica dogwood
• Jamaica honeysuckle
• Jamaica quassia
• Jamaica rum
• Jamaica shorts
• Jamaica sorrel