Vernonia acaulis – Stemless Ironweed

Botanical Family Asteraceae

Bloom Time June – August

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Semitectate

Size (um) 39

Shape Round

Pollen Color

Honey Bee Resources

Pollen Source • •

Nectar Source • • •

Stokesia laevis – Stokes’ Aster

Botanical Family Asteraceae

Bloom Time May – July

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Reticulate

Tectum Semitectate

Size (um) 

Shape Triangular

Pollen Color

Honey Bee Resources

Pollen Source

Nectar Source

Flower photo contributed by Mount Cuba

Eupatorium perfoliatum – American Boneset

Botanical Family Asteraceae

Bloom Time July – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Semitectate

Size (um) 24

Shape Round

Pollen Color

Honey Bee Resources

Pollen Source

Nectar Source

Silphium laciniatum – Compass Plant

Botanical Family Asteraceae

Bloom Time July – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Semitectate

Size (um) 

Shape Round

Pollen Color 

Honey Bee Resources

Pollen Source

Nectar Source

Ambrosia spp. – Ragweed

Botanical Family Asteraceae

Bloom Time June – October

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate/Perforate

Tectum Semitectate

Size (um) 

Shape Round

Pollen Color 

Honey Bee Resources

Pollen Source

Nectar Source

Phlox carolina ‘Kim’ – Thickleaf Phlox

Botanical Family Polemoniaceae

Bloom Time May – July

Pollen Characteristics

Dispersal Unit Monad

Aperture Number <6

Aperture Type Porate

Ornamentation Reticulate

Tectum Eutectate

Size (um) 

Shape Round

Pollen Color 

Honey Bee Resources

Pollen Source

Nectar Source

Flower photo contributed by Mount Cuba

Spigelia gentianoides – Purpleflower Pinkroot

Botanical Family Ranunculaceae

Bloom Time June – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Colpus

Ornamentation Granulate/Perforate

Tectum Semitectate

Size (um) 

Shape Round

Pollen Color 

Honey Bee Resources

Pollen Source

Nectar Source