Asteraceae

Centaurea cyanus – Cornflower Thistle

Centaurea cyanus–Cornflower Thistle
Centaurea cyanus–Cornflower Thistle
Centaurea cyanus–Cornflower Thistle
Centaurea cyanus–Cornflower Thistle
Centaurea cyanus–Cornflower Thistle
Centaurea cyanus–Cornflower Thistle
Centaurea cyanus–Cornflower Thistle
Centaurea cyanus–Cornflower Thistle
Centaurea cyanus–Cornflower Thistle
Centaurea cyanus–Cornflower Thistle

Botanical Family Asteraceae

Bloom Time May – July

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate

Tectum Semitectate

Size (um) 

Shape Round 

Pollen Color Yellow, Brown

Honey Bee Resources

Pollen Source •

Nectar Source • •

Petasites japonicus – Bog Rhubarb

Petasites japonicus–Bog Rhubarb
Petasites japonicus–Bog Rhubarb
Petasites japonicus–Bog Rhubarb
Petasites japonicus–Bog Rhubarb
Petasites japonicus–Bog Rhubarb
Petasites japonicus–Bog Rhubarb
Petasites japonicus–Bog Rhubarb
Petasites japonicus–Bog Rhubarb
Petasites japonicus–Bog Rhubarb
Petasites japonicus–Bog Rhubarb
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 • •

Marshallia mohrii – Mohrs Barbara Button

Marshallia mohrii – Mohrs Barbara Button
Marshallia mohrii – Mohrs Barbara Button
Marshallia mohrii – Mohrs Barbara Button

Botanical Family Asteraceae

Bloom Time May – August

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Eutectate

Size (um) 36

Shape Round

Pollen Color

Honey Bee Resources

Pollen Source

Nectar Source

Flower photos contributed by Mount Cuba

Marshallia trinervia – Broadleaf Barbaras Buttons

Marshallia trinervia–Broadleaf Barbaras Buttons
Marshallia trinervia–Broadleaf Barbaras Buttons
Marshallia trinervia–Broadleaf Barbaras Buttons
Marshallia trinervia–Broadleaf Barbaras Buttons
Marshallia trinervia–Broadleaf Barbaras Buttons
Marshallia trinervia–Broadleaf Barbaras Buttons
Marshallia trinervia–Broadleaf Barbaras Buttons

Botanical Family Asteraceae

Bloom Time April – July

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Eutectate

Size (um) 30

Shape Round

Pollen Color 

Honey Bee Resources

Pollen Source

Nectar Source

Flower photo contributed by Mount Cuba

Liatris squarrosa – Scaly Blazing Star

Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star
Liatris squarrosa–Scaly Blazing Star

Botanical Family Asteraceae

Bloom Time June – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Eutectate

Size (um) 26

Shape Round 

Pollen Color

Honey Bee Resources

Pollen Source

Nectar Source

Flower photo contributed by Mount Cuba

Heliopsis helianthoides – Rough Oxeye

 

Heliopsis helianthoides–Rough Oxeye
Heliopsis helianthoides–Rough Oxeye
Heliopsis helianthoides–Rough Oxeye
Heliopsis helianthoides–Rough Oxeye
Heliopsis helianthoides–Rough Oxeye

Botanical Family Asteraceae

Bloom Time June – August

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Eutectate

Size (um) 29

Shape Round 

Pollen Color Dark Yellow

Honey Bee Resources

Pollen Source •

Nectar Source •

Flower photo contributed by Mount Cuba