"Parts of a stamen. A, front; B, back. a, anther; c, connective; f, filament." -Bergen, 1896

Stamen Parts

"Parts of a stamen. A, front; B, back. a, anther; c, connective; f, filament." -Bergen, 1896

"Stamens of a thistle, with anthers united into a ring. a, united anthers; f, filaments, bearded on the sides." -Bergen, 1896

Thistle Stamens

"Stamens of a thistle, with anthers united into a ring. a, united anthers; f, filaments, bearded on…