1. In former classifications: comprising plants with a vascular system including ferns and fern allies as well as seed plants
   - Tracheophyta

Type of: division

Part of: kingdom Plantae, plant kingdom, Plantae

• acanthion
• Acanthisitta
• Acanthisitta chloris
• Acanthisittidae
• Acanthocephala
• acanthocephalan
• Acanthocereus
• Acanthocereus pentagonus
• Acanthocereus tetragonus
• Acanthocybium
• Acanthocybium solandri
• acanthocyte
• acanthocytosis
• acanthoid
• acantholysis
• acanthoma
• Acanthophis
• Acanthophis antarcticus
• acanthopterygian
• Acanthopterygii
• Acanthoscelides
• Acanthoscelides obtectus
• adenosine monophosphate
• adenosine triphosphate
• adenosis