Subject
- Specific Epithet: pinguis 2
- Specific Epithet: pinnata 1
- Specific Epithet: platyphylla 13
- Specific Epithet: platyphylloidea 10
- Specific Epithet: pleniceps 1
- Specific Epithet: plumosum 19
- Specific Epithet: polare 2
- Specific Epithet: polyantha 1
- Specific Epithet: polyanthos 1
- Specific Epithet: polycarpa 2
- Specific Epithet: polymorpha 2
- Specific Epithet: polypodioides 4
- Specific Epithet: polysetum 14
- Specific Epithet: pomiformis 8
- Specific Epithet: porteri 3
- Specific Epithet: procera 4
- Specific Epithet: procurrens 1
- Specific Epithet: proligera 1
- Specific Epithet: prorepens 5
- Specific Epithet: prostratum 7