Species having 'longifolia' as epithet name:
- Acacia longifolia
- Brachiaria longifolia Syn. for: Echinochloa colona
- Chloris longifolia Syn. for: Chloris barbata
- Cipura longifolia Syn. for: Neomarica longifolia
- Cypella longifolia Syn. for: Neomarica longifolia
- Disporopsis longifolia
- Ludwigia longifolia
- Magnolia longifolia Syn. for: Magnolia grandiflora
- Marica longifolia Syn. for: Neomarica longifolia
- Mentha longifolia
- Mimosa longifolia Syn. for: Acacia longifolia
- Monarda longifolia Syn. for: Monarda fistulosa
- Morina longifolia
- Neomarica longifolia
- Olea longifolia Syn. for: Olea europaea
- Phyllodoce longifolia Syn. for: Acacia longifolia
- Polyalthia longifolia