Petasites japonicus – Bog Rhubarb

Botanical Family Asteraceae

Bloom Time March – April

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Eutectate

Size (um) 33

Shape Round

Pollen Color White

Honey Bee Resources

Pollen Source • •

Nectar Source • •

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