What plant is that?

Click on photo below to view larger image
Bladder Campion--flower stalkBladder Campion-- flower
Bladder Campion --leaves Bladder Campion--closeup of flower

Upper and lower left: © Katy Chayka,
via Minnesota Wildflowers,https://www.minnesotawildflowers.inf 

Upper right: © Peter M. Duziuk,
via Minnesota Wildflowers,https://www.minnesotawildflowers.inf

Lower rightt: AfroBrazilian, CC BY-SA 3.0<https://
creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons 

The mystery plant for February 2022 is an introduced perennial. It’s white flowers (½–¾” across and about 1” long) have deeply cleft petals that often trick the unwary into miscounting them.  The calyx is enlarged and appears inflated. The plant produces large panicles of these flowers and grows to around 2 feet tall. The entire plant is smooth with alternate, entire gray-green leaves. It grows in dry places and open fields.

It’s. . .

Botanical Name:
Silene vulgaris
Common Name:
  Bladder Campion
  Caryophyllaceae (Pink family)
  Disturbed areas, fields and meadows