The Collaborative International Dictionary of English v.0.48:

Behen \Be"hen\, Behn \Behn\, n. [Per. & Ar. bahman, behmen, an
   herb, whose leaves resemble ears of corn, saffron.] (Bot.)
      (a) The Centaurea behen, or saw-leaved centaury.
      (b) The Cucubalus behen, or bladder campion, now called
          Silene inflata.
      (c) The Statice limonium, or sea lavender.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Campion \Cam"pi*on\, n. [Prob. fr. L. campus field.] (Bot.)
   A plant of the Pink family (Cucubalus bacciferus), bearing
   berries regarded as poisonous.
   [1913 Webster]

   Bladder campion, a plant of the Pink family (Cucubalus
      Behen or Silene inflata), having a much inflated calyx.
      See Behen.

   Rose campion, a garden plant (Lychnis coronaria) with
      handsome crimson flowers.
      [1913 Webster]