Porogames, 273.
Poronia, 131.
Porphyra, 10, 78.
Porphyraceæ, 78.
Portulaca, 373.
Portulacaceæ, 373.
Posidonia, 281.
Potamogeton, 47, 278, 279.
Potamogetonaceæ, 278, 279.
Potato-fungus, 104, 107.
Potato-plant, 521, 522.
Potentilla, 458, 460.
Potentilleæ, 458.
Poterium, 460.
Pothos, 304.
Pottia, 196.
Pottiaceæ, 196.
Pouzolzia, 353.
Prasiola, 53.
Preissia, 191.
Preslia, 539.
Primrose, 512.
Primula, 511, 512, 513.
Primulaceæ, 239, 512, 514.
Primulinæ, 505, 511.
Pringsheimia, 54.
Prionium, 284.
Pritchardia, 298.
A Handbook of Systematic Botany · The Wunder Library — complete classics, free to read, with narration.