Petunia spp.–Petunia
Botanical Family Solanaceae
Bloom Time May to Frost
Pollen Characteristics
Dispersal Unit Monad
Aperture Number 0
Aperture Type Sulcus
Ornamentation Pilate/Granulate
Tectum Eutectate
Size (um)
Shape Oval
July
Origanum vulgare–Oregano
Origanum vulgare–Oregano
Botanical Family Lamiaceae
Bloom Time July – September
Pollen Characteristics
Dispersal Unit Monad
Aperture Number 6
Aperture Type Colpus
Ornamentation Granulate/Perforate
Tectum Semi-tectate
Size (um)
Shape Round
Panicum virgatum–Switchgrass
Panicum virgatum–Switchgrass
Botanical Family Poaceae
Bloom Time July – February
Pollen Characteristics
Dispersal Unit Monad
Aperture Number 3
Aperture Type Compound
Ornamentation Echinate
Tectum Eutectate
Size (um) 27
Shape Round
Oxydendrum arboreum – Sourwood
Oxydendrum arboreum–Sourwood
Oxydendrum arboreum–Sourwood
Oxydendrum arboreum–Sourwood
Oxydendrum arboreum–Sourwood
Oxydendrum arboreum–Sourwood
Oxydendrum arboreum–Sourwood
Oxydendrum arboreum–Sourwood
Botanical Family Ericaceae
Bloom Time June – July
Pollen Characteristics
Dispersal Unit Tetrad
Aperture Number 3
Aperture Type Compound
Ornamentation Reticulate
Tectum Eutectate
Size (um) 40
Shape Round
Pollen Color Cream, 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
Opuntia humifusa – Low Prickly Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Opuntia humifusa–Creeping Pear
Botanical Family Cactaceae
Bloom Time May – August
Pollen Characteristics
Dispersal Unit Monad
Aperture Number 6+
Aperture Type Porate
Ornamentation Reticulate
Tectum Semi-tectate
Size (um) 123
Shape Round
Pollen color
Honey Bee Resources
Pollen Source
Nectar Source
Flower photos contributed by Mount Cuba
Oenothera missouriensis–Missouri Evening Primrose
Oenothera missouriensis–Missouri Evening Primrose
Oenothera missouriensis–Missouri Evening Primrose
Oenothera missouriensis–Missouri Evening Primrose
Oenothera missouriensis–Missouri Evening Primrose
Oenothera missouriensis–Missouri Evening Primrose
Oenothera missouriensis–Missouri Evening Primrose
Botanical Family Onagraceae
Bloom Time May – August
Pollen Characteristics
Dispersal Unit Monad
Aperture Number 3
Aperture Type Compound
Ornamentation Granulate/Perforate
Tectum Eutectate
Size (um)
Shape Triangle
Pollen Color
Nepeta subsessilis – Nepeta
Nepeta subsessilis–Nepeta
Nepeta subsessilis–Nepeta
Nepeta subsessilis–Nepeta
Nepeta subsessilis–Nepeta
Nepeta subsessilis–Nepeta
Nepeta subsessilis–Nepeta
Nepeta subsessilis–Nepeta
Nepeta subsessilis–Nepeta
Nepeta subsessilis–Nepeta
Botanical Family Lamiaceae
Bloom Time May – September
Pollen Characteristics
Dispersal Unit Monad
Aperture Number 1
Aperture Type Sulcus
Ornamentation Perforate/Psilate
Tectum Eutectate
Size (um)
Shape Oval
Pollen Color
Honey Bee Resources
Pollen Source
Nectar Source
Nicotiana tabacum – Tobacco
Nicotiana tabacum–Tobacco
Nicotiana tabacum–Tobacco
Nicotiana tabacum–Tobacco
Nicotiana tabacum–Tobacco
Nicotiana tabacum–Tobacco
Nicotiana tabacum–Tobacco
Nicotiana tabacum–Tobacco
Botanical Family Solanaceae
Bloom Time June – October
Pollen Characteristics
Dispersal Unit Monad
Aperture Number 1
Aperture Type Compound
Ornamentation Granulate/Perforate
Tectum Eutectate
Size (um)
Shape Round
Pollen Color
Honey Bee Resources
Pollen Source
Nectar Source
Lythrum salicaria – Purple loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Lythrum salicaria–Purple Loosetrife
Bloom Time May – September
Pollen Characteristics
Dispersal Unit Monad
Aperture Number 3
Aperture Type Colporate
Ornamentation Granulate/Perforate
Tectum Eutectate
Size (um)
Shape Round
Pollen Color
Honey Bee Resources
Pollen Source
Nectar Source
The Anther's Promise 