Botanical Family: Fabaceae
Bloom Time July – August
Pollen Characteristics
Dispersal Unit Monad
Aperture Number 3
Aperture Type Compound
Ornamentation Granulate/Perforate
Tectum Eutectate
Size (um)
Shape Round
Pollen Color
Honey Bee Resources
Pollen Source
Nectar Source
Wild Senna is a favorite pollen source of bumble bees, due to its high protein-to-lipid ratios, and is a great choice for any garden wanting to support their native bees, particular bumbles. Interestingly, Wild Senna’s flowers do not have nectaries, instead the plant has evolved extrafloral nectaries, which are separate from the flowers. They are positioned on the leaf petioles near their attachment to the primary plant stem.
Sources
Xerces Society for Invertebrate Conservation (2017). Plants for Pollinators: Wild Senna
The Anther's Promise 