Gleditsia triacanthos – Honey Locust

Botanical Family Fabaceae

Bloom Time May – June

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Psilate

Tectum Semi-tectate

Size (um) 38

Shape Round 

Pollen Color Dark Yellow

Honey Bee Resources

Pollen Source • • • •

Nectar Source •

Flower photos contributed by Mount Cuba

Galanthus nivalis – Snowdrop

Botanical Family Amaryllidaceae

Bloom Time February

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 1

Aperture Type Sulcus

Ornamentation Granulate/Perforate

Tectum Eutectate

Size (um) 25

Shape Oval

Pollen Color Orange, Yellow

Honey Bee Resources

Pollen Source • • •

Nectar Source • • •

Eranthis hyemalis – Winter Aconite

Botanical Family Ranunculaceae

Bloom Time March – April

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate/Perforate

Tectum Eutectate

Size (um) 42

Shape Round

Pollen Color Yellow

Honey Bee Resources

Pollen Source • • • 

Nectar Source • • • 

 

Hedera helix – English Ivy

Botanical Family Araliaceae

Bloom Time September – October

 Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Reticulate

Tectum Semitectate

Size (um)

Shape Round

Pollen Color Yellow, Orange

Honey Bee Resources

Pollen Source • • •

Nectar Source • • •

Eschscholzia californica – Californian Poppy

Botanical Family Papaveraceae

Bloom Time June – July

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 6

Aperture Type Colpus

Ornamentation Granulate/Perforate

Tectum Semitectate

Size (um)

Shape Round

Pollen Color Yellow, Orange

Honey Bee Resources

Pollen Source • •

Nectar Source •

Elaeagnus umbellata – Spreading Oleaster

 

Botanical Family Elaeagnaceae

Bloom Time March–July

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Granulate/Perforate

Tectum Eutectate

Size (um)

Shape Round

Pollen Color Yellow, Brown

Honey Bee Resources 

Pollen Source •

Nectar Source • •

Cucurbita pepo – Squash

Botanical Family Cucurbitaceae

Bloom Time July – August

Pollen Characteristics

Dispersal Unit Monad

Aperture Number Multiple

Aperture Type Porate

Ornamentation Echinate

Tectum Eutectate

Size (um)

Shape Round

Pollen Color Yellow

Honey Bee Resources

Pollen Source • •

Nectar Source • •

Crocus vernus – Crocus Pickwick

 

Botanical Family Iridaceae

Bloom Time March – April

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 0-1

Aperture Type Inaperturate

Ornamentation Echinate

Tectum Eutectate

Size (um) 102

Shape Round

Pollen Color Yellowish orange

Honey Bee Resource

Pollen Source • • • 

Nectar Source • • 

Commelina communis – Asiatic Dayflower

 

Botanical Family Commelinaceae

Bloom Time July – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 0-1

Aperture Type Inaperturate

Ornamentation Echinate

Tectum Eutectate

Size (um)

Shape Oval 

Pollen Color Yellow, Blue, Brown

Honey Bee Resources

Pollen Source

Nectar Source

The pollen from Commelina communis is polymorphic, meaning that the pollen, and often the anthers as well, come in different colors. In this case, Commelina has yellow, blue, or brown anthers and pollens (Willner 2011). Commelina communis has sterile, or fodder pollen, as well as fertile pollen, and these different types of pollen can have different colors even on the same flower head.

Sources

Willmer, P. (2011). Pollination and floral ecology. Princeton, NJ: Princeton University Press.

Lunau, K. (1995). Notes on the colour of pollen. Plant Systematics and Evolution, 198(3/4), 235-252. Retrieved from http://www.jstor.org/stable/23642852

Chrysogonum virginianum – Golden Knee

Botanical Family Asteraceae

Bloom Time April – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Eutectate

Size (um)

Shape Round

Pollen Color Dark Yellow

Honey Bee Resources

Pollen Source • •

Nectar Source •

Flower photos contributed by Mount Cuba