1. A Japanese shrub that resembles members of the genus Spiraea; widely cultivated in many varieties for its dense panicles of flowers in many colours; often forced by florists for Easter blooming
   - spirea, spiraea

Type of: astilbe

• genus Pelecanus
• genus Pellaea
• genus Pellicularia
• genus Peltandra
• genus Peltiphyllum
• genus Penelope
• genus Peneus
• genus Penicillium
• genus Pennatula
• genus Pennisetum
• genus Penstemon
• genus Peperomia
• genus Perca
• genus Percina
• genus Perdix
• genus Pereskia
• genus Pericallis
• genus Peridinium
• genus Perilla
• genus Periophthalmus
• genus Peripatopsis
• genus Peripatus
• genus Periplaneta
• genus Periploca
• genus Perisoreus