1. Fern of tropical America: from southern United States to West Indies and Mexico to Brazil
   - black-stemmed spleenwort, little ebony spleenwort

Type of: spleenwort

• order Primates
• order Primulales
• order Proboscidea
• order Procellariiformes
• order Proteales
• order Protura
• order Pseudomonadales
• order Pseudoscorpiones
• order Pseudoscorpionida
• order Psilophytales
• order Psilotales
• order Psittaciformes
• order Psocoptera
• order Pterosauria
• order Pulmonata
• order Pycnogonida
• order Radiolaria
• order Rajiformes
• order Ranales
• order Ranunculales
• order Raptores
• order Rhamnales
• order Rheiformes
• order Rhoeadales
• order Rhynchocephalia