Nasturtium sarmentosum (Forst.f.) Schulz -- Synonym von Rorippa sarmentosa (DC.) Macbr.
Neottopteris nidus (L.) J.Smith -- samoan. Name: laugapâpâ
Nicotiana tabacum L. -- samoan. Name: tapa'a
Nothopanax fruticosum Miq. -- Synonym von Panax fruticosum L.
Nothopanax samoense A.Gray -- Synonym von Polyscias samoensis (A.Gray) Harms

Ocimum basilicum L. -- samoan. Name: la'au sauga
Ocimum gratissimum L. -- samoan. Name: la'au sauga
Ocimum sanctum L. -- samoan. Name: la'au sauga
Omalanthus -- samoan. Name: Homalanthus

Panax fruticosum L. -- samoan. Name: tagitagi
Pandanus spp. -- samoan. Name: fala
Pandanus tectorius Park. -- samoan. Name: fala
Panicum spp. -- samoan. Name: sefa
Parinari glaberrima Hassk. -- Synonym von Atuna racemosa Raf.
Parinarium laurinum A.Gray -- Synonym von Atuna racemosa Raf.
Peperomia pellucida (L.) H.B.K. -- samoan. Name: vao vai
Persea americana P.Mill. -- samoan. Name: 'avioka
Phaleria acuminata (A.Gray) Gilg -- samoan. Name: pua vao, suni
Phaleria burnettiana Rein. -- Synonym von Phaleria disperma (Forst.f.) Baill.
Phaleria disperma (Forst.f.) Baill. -- samoan. Name: suni
Phyllanthus spp. -- samoan. Name: fua lili'i
Phyllanthus amarus Sch. et Thon. -- samoan. Name: fua lili'i
Phyllanthus niruri L. -- Synonym von Phyllanthus amarus Sch. et Thon.
Phyllanthus simplex Retz. -- Synonym von Phyllanthus virgatus Forst.f.
Phyllanthus virgatus Forst.f. -- samoan. Name: 'avasâ, moimoi
Phymatosorus scolopendria (Burm.f.) Pichi-Serm. -- siehe Microsorium scolopendria (Burm.f.) Copel.
Physalis angulata L. -- samoan. Name: vî vao
Piper spp. -- samoan. Name: 'ava'ava aitu, fue manogi II
Piper graeffei Warb. -- samoan. Name: 'ava'ava aitu, fue manogi II
Piper latifolium (Forst.f. ex) L.f. -- samoan. Name: 'ava'ava aitu
Piper methysticum Forst.f. -- samoan. Name: 'ava
Pipturus spp. -- samoan. Name: fausogâ
Pipturus argenteus (Forst.f.) Wedd. -- samoan. Name: fausogâ
Plectronia merrillii Setch. -- Synonym von Canthium merrillii (Setch.) Christoph.
Plumbago zeylanica L. -- samoan. Name: lautafifi II
Plumeria rubra L. -- samoan. Name: pua fiti
Pogostemon cablin (Blanco) Benth. -- samoan. Name: pate papâlagi
Poinciana pulcherrima L. -- Synonym von Caesalpinia pulcherrima (L.) Sw.
Polypodium spp. -- samoan. Name: toaniuvao
Polypodium dilatatum Wall. -- Synonym von Polypodium polynesicum C.Christ.
Polypodium phymatodes L. -- Synonym von Microsorium scolopendria (Burm.f.) Copel.
Polypodium polynesicum C.Christ. -- ohne samoanischen Namen
Polypodium scolopendria Burm.f. -- Synonym von Microsorium scolopendria (Burm.f.) Copel.
Polyscias samoensis (A.Gray) Harms -- samoan. Name: tagitagi
Polyscias scutellaria (Burm.f.) Fosb. -- samoan. Name: tagitagi
Portulaca quadrifida L. -- samoan. Name: fiafiâtuli
Premna obtusifolia R.Br. -- Synonym von Premna serratifolia L.
Premna serratifolia L. -- samoan. Name: aloalo
Premna taitensis Schauer -- Synonym von Premna serratifolia L.
Premna taitensis Schauer var. taitensis -- samoan. Name: aloalo
Psidium guajava L. -- samoan. Name: kuava
Psychotria spp. -- samoan. Name: fatifati, la'au fai vaitusi, laumafatifati, olavai II
Psychotria forsteriana A.Gray -- samoan. Name: siapo atua
Psychotria insularum A.Gray -- samoan. Name: ma'anunu I, matalafi
Pteris spp. -- samoan. Name: vao tuâniu