P. seemannii may refer to a few different species of plant. The specific epithet seemannii refers to someone with the surname 'Seemann,' in many cases it's botanist Berthold Carl Seemann (1825–1871).
, a plant in the family Rubiaceae , a plant in the family Fabaceae , a plant in the family Passifloraceae , a plant in the family Asteraceae , a fern in the family Pteridaceae , a plant in the family Asteraceae , a fern in the family Thelypteridaceae Phyllanthus seemannii, a plant in the genus Phyllanthus native to Fiji Phytelephas seemannii, a plant in the family Arecaceae , a plant in the family Urticaceae , a fern in the family Polypodiaceae , a plant in the family Asteraceae , a plant in the family Araceae , a plant in the family Apocynaceae Ptychosperma seemannii, a synonym for Balaka seemannii, a palm in the family Arecaceae