1. Tropical American terrestrial fern with leathery lanceolate fronds; sometimes placed in genus Polybotrya
   - hart's-tongue, hart's-tongue fern, Olfersia cervina, Polybotrya cervina

Type of: fern

• aspect
• aspect ratio
• aspectual
• aspen
• aspen poplar
• asper
• Asperger's syndrome
• asperges
• aspergill
• Aspergillaceae
• Aspergillales
• aspergillosis
• aspergillum
• Aspergillus
• Aspergillus fumigatus
• Aspergillus niger
• asperity
• asperse
• aspersion
• aspersorium
• Asperula
• Asperula odorata
• Asperula tinctoria
• asphalt
• asphaltic