Eupatorium ‘Phantom’ – Joe-Pye Weed

 

Botanical Family Asteraceae

Bloom Time July – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Echinate

Tectum Eutectate

Size (um) 17 um

Shape Round

 

Pollen Color Dark brown, black

Honey Bee Resources

Pollen Source • • •

Nectar Source • • •

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 • •

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 • •

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

Centaurea solstitialis – Yellow Star-Thistle

Botanical Family Asteraceae

Bloom Time Seasonal

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Lophate

Tectum Semitectate

Size (um)

Shape Round 

Pollen Color Yellow, Brown

Honey Bee Resources

Pollen Source •

Nectar Source •

Allium tuberosum – Garlic Chives

Botanical Family Amaryllidaceae

Bloom Time August – September

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 1

Aperture Type Sulcus/Inaperturate

Ornamentation Psilate

Tectum Eutectate

Size (um)

Shape Oval

Pollen Color Brown, Green

Honey Bee Resources

Pollen Source • • •

Nectar Source • • • •

 

 

Prunus yedoensis – Yoshino Cherry

Bloom Time February – May

Pollen Characteristics

Dispersal Unit Monad

Aperture Number 3

Aperture Type Compound

Ornamentation Striate

Tectum Semitectate

Size (um)

Shape Triangular

Pollen Color Yellow, Brown, Tan

Honey Bee Resources

Pollen Source • •

Nectar Source • • •

Prunus spp. honey is typically light in color, quick to granulate, but has good flavor. Prunus spp. may contribute to early honey surplus for honey bees.

Source

Sammataro, D. and Harman, A. (2013). “Major Flowers Important to Honey Bees in the Northeast and Mid-Atlantic States”. AlphaGraphics, Tucson, AZ.