1. Having horns that are hollow

See also: horned

• genus Parrotiopsis
• genus Parthenium
• genus Parthenocissus
• genus Parula
• genus Parus
• genus Paspalum
• genus Passer
• genus Passerina
• genus Passiflora
• genus Pastinaca
• genus Patella
• genus Pavo
• genus Pavonia
• genus Payena
• genus Pecari
• genus Pecopteris
• genus Pecten
• genus Pediculus
• genus Pedilanthus
• genus Pediocactus
• genus Pedioecetes
• genus Pedionomus
• genus Peireskia
• genus Pelargonium
• genus Pelecanus