Trees and Shrubs

Corylopsis pauciflora – Buttercup Winterhazel

Corylopsis pauciflora–Buttercup winterhazel

Botanical Family Hamamelidaceae

Bloom Time March – April

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Colpus

Ornamentation granulate/perforate

Tectum Semitectate

Size (um)

Shape Round

Honey Bee Resources

Pollen Source

Nectar Source

Cornus mas – Cherry Dogwood

Cornus mas–cornelian cherry dogwood

Botanical Family Cornaceae

Bloom Time March

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Psilate

Tectum Eutectate

Size (um)

Shape Round

Pollen Color Tan, light yellow

Honey Bee Resource

Pollen Source • •

Nectar Source • •

Cornus florida-Flowering Dogwood

Cornus florida–Flowering Dogwood

Botanical Family Cornaceae

Bloom Time April–May

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate/Perforate

Tectum Eutectate

Size

Shape Triangular

Amelanchier canadensis – Shadblow Serviceberry

Amelanchier canadensis – Shadblow serviceberry

Botanical Family Roseaceae

Bloom Time March – June

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate/Perforate

Tectum Eutectate

Size (um)

Shape Round

Honey Bee Resources

Pollen Source

Nectar Source

Resources

Flower photos contributed by Mount Cuba

Amelanchier arborea – Serviceberry

Botanical Family Roseaceae

Bloom Time February – May

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate/Perforate

Tectum Eutectate

Size (um)

Shape Triangular

Pollen Color

Honey Bee Resources

Pollen Source

Nectar Source

Resources

Flower photos contributed by Mount Cuba

Amelanchier laevis – Allegheny Serviceberry

Amelanchier laevis – Serviceberry

Amelanchier laevis – Allegheny serviceberry

Botanical Family Roseaceae

Bloom Time March – May

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 4

Aperture Type Irregular

Ornamentation Psilate

Tectum Eutectate

Size (um)

Shape Irregular

Pollen Color Yellow

Honey Bee Resources

Pollen Source •

Nectar Source •

Resources

Flower photos contributed by Mount Cuba

Aesculus sylvatica – Painted Buckeye

Botanical Family Hippocastanaceae

Bloom Time March – June

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Clavate

Tectum Eutectate

Size (um)

Shape Round

Pollen Color

Honey Bee Resources

Pollen Source

Nectar Source

Pollen Load Identification

The pollen of Aesculus spp. is known to cause a lot of dusting on the body of the foraging bee. Typically, the Aesculus spp. pollen creates a dusting on the posterior thorax, and the posterior and anterior abdomen of the foraging bee. Pollen has also been noted on the wings of bees visiting Aesculus for nectar instead of pollen.