Pyrus calleryana – Callery Pear

Botanical Family Ranunculaceae

Bloom Time April

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate/Perforate

Tectum Semitectate

Size (um) 

Shape Round

Pollen Color Light Green

Honey Bee Resources

Pollen Source •

Nectar Source • •

Ulmus americana – American Elm

Bloom Time March – April

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 4

Aperture Type Colpus

Ornamentation Psilate/Granulate

Tectum Eutectate

Size (um) 

Shape Round

Pollen Color Yellow, Green

Honey Bee Resources

Pollen Source • •

Nectar Source •

Viburnum prunifolium – Blackhaw Viburnum

Botanical Family Adoxaceae

Bloom Time May – June

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Reticulate/Microreticulate

Tectum Eutectate

Size (um) 27

Shape Round

Pollen Color Tan, Green

Honey Bee Resources

Pollen Source

Nectar Source

Viburnum carlesii – Koreanspice Viburnum

Botanical Family Adoxaceae

Bloom Time March – April

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Reticulate/Mircoreticulate

Tectum Eutectate

Size (um) 27

Shape Round

Pollen Color Tan, Green

Honey Bee Resources

Pollen Source

Nectar Source

Viburnum farreri – Viburnum

Botanical Family Adoxaceae

Bloom Time April

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Reticulate

Tectum Eutectate

Size (um) 27

Shape Round

Pollen Color Tan, Green

Honey Bee Resources

Pollen Source

Nectar Source

Penstemon calycosus – Smooth Beardtongue

Botanical Family: Plantaginaceae

Bloom Time May – June

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate

Tectum Semi-tectate

Size (um) 25

Shape Round

Pollen Color Green, Tan

Honey Bee Resources

Pollen Source

Nectar Source

Penstemon smallii – Small’s Beardtongue

 

Botanical Family: Plantaginaceae

Bloom Time April – June

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate

Tectum Semi-tectate

Size (um)

Shape Round

Pollen Color Green

Honey Bee Resources

Pollen Source • • •

Nectar Source • • •