August

Silphium laciniatum – Compass Plant

Silphium laciniatum – Compass Plant
Silphium laciniatum – Compass Plant
Silphium laciniatum – Compass Plant
Silphium laciniatum – Compass Plant
Silphium laciniatum – Compass Plant
Silphium laciniatum – Compass Plant
Silphium laciniatum – Compass Plant
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

Ambrosia spp. – Ragweed
Ambrosia spp. – Ragweed
Ambrosia spp. – Ragweed
Ambrosia spp. – Ragweed
Ambrosia spp. – Ragweed
Ambrosia spp. – Ragweed
Ambrosia spp. – Ragweed
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

Spigelia gentianoides – Purpleflower Pinkroot

Spigelia gentianoides – Purpleflower Pinkroot
Spigelia gentianoides – Purpleflower Pinkroot
Spigelia gentianoides – Purpleflower Pinkroot
Spigelia gentianoides – Purpleflower Pinkroot
Spigelia gentianoides – Purpleflower Pinkroot
Spigelia gentianoides – Purpleflower Pinkroot
Spigelia gentianoides – Purpleflower Pinkroot
Spigelia gentianoides – Purpleflower Pinkroot
Spigelia gentianoides – Purpleflower Pinkroot
Spigelia gentianoides – Purpleflower Pinkroot
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

Clematis hybrid – Clematis

Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis
Clematis hybrid – Clematis

Botanical Family Ranunculaceae

Bloom Time June – September

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

Flower photos contributed by Mount Cuba

Veratrum virginicum – Virginia Bunchflower

Veratrum virginicum – Virginia Bunchflower
Veratrum virginicum – Virginia Bunchflower
Veratrum virginicum – Virginia Bunchflower
Veratrum virginicum – Virginia Bunchflower
Veratrum virginicum – Virginia Bunchflower

Botanical Family Liliaceae

Bloom Time June – August

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 1

Aperture Type Sulcus

Ornamentation Granulate/Perforate

Tectum Eutectate

Size (um) 

Shape Round

Pollen Color 

Honey Bee Resources

Pollen Source

Nectar Source

Physalis heterophylla – Clammy Ground Cherry

Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry
Physalis heterophylla – Clammy Ground Cherry

Botanical Family Solanaceae

Bloom Time June – September

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

Clematis orientalis – Orange Peel Clematis

Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis
Clematis orientalis – Orange Peel Clematis

Botanical Family Ranunculaceae

Bloom Time July – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Colpus

Ornamentation Granulate/Perforate

Tectum Eutectate

Size (um) 21

Shape Round

Pollen Color Light Green, Light Orange, Light Yellow

Honey Bee Resources

Pollen Source

Nectar Source

Hypericum kalmianum – Kalm’s St. John’s Wort

 

Hypericum kalmianum – Kalm’s St. John’s Wort
Hypericum kalmianum – Kalm’s St. John’s Wort

Botanical Family: Hypericaceae

Bloom Time July – August

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Reticulate

Tectum Eutectate

Size (um) 

Shape Round

Pollen Color 

Honey Bee Resources

Pollen Source

Nectar Source

Melilotus officinalis – Yellow Sweet Clover

Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover
Melilotus officinalis – Yellow Sweet Clover

Botanical Family Fabaceae

Bloom Time May – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate/Perforate

Tectum Eutectate

Size (um) 

Shape Oval

Pollen Color Tan, Dark Yellow

Honey Bee Resources

Pollen Source • • •

Nectar Source • • •

Callona vulgaris – Scotch Heather

Callona vulgaris – Scotch Heather
Callona vulgaris – Scotch Heather
Callona vulgaris – Scotch Heather
Callona vulgaris – Scotch Heather
Callona vulgaris – Scotch Heather
Callona vulgaris – Scotch Heather
Callona vulgaris – Scotch Heather

Botanical Family Ericaceae

Bloom Time July – September

Pollen Characteristics

Dispersal Unit Tetrad

Aperture Number N/A

Aperture Type Inaperturate

Ornamentation Psilate

Tectum Eutectate

Size (um) 

Shape Round

Pollen Color 

Honey Bee Resources

Pollen Source

Nectar Source