Drilling down on reproduction

Geranium richardsonii, June 16, 2022

G. richardsonii, Weller, 9,100’, July 11, 2022

Common & scientific name
Richardson’s geranium, Geranium richardsonii

Family
Geranium, Geraniaceae

Location
Roadside, 10,000’

Fun, weird, helpful, or little known fact

Distinguishable from its close relative, Geranium viscosissimum, by the sticky, red-ball-tipped (“glandular”) hairs on the stem below its flower, as opposed to the yellow-tipped hairs on G. viscosissimum.

Geraniums have evolved a wonderful method for successfully planting their own seeds.  Its seeds are attached to a reproductive part of the flower, the style, that coils like a spring.  Once it falls to the ground, it coils and uncoils in response to changes in atmospheric pressure, thereby drilling itself and its seeds into the ground.