What is "barren flower"

Barren \Bar"ren\ (b[a^]r"ren), a. [OE. barein, OF. brehaing, fem. brehaigne, baraigne, F. br['e]haigne; of uncertain origin; cf. Arm. br['e]kha[~n], markha[~n], sterile; LL. brana a sterile mare, principally in Aquitanian and Spanish documents; Bisc. barau, baru, fasting.]

1. Incapable of producing offspring; producing no young; sterile; -- said of women and female animals.

   She was barren of children.
   --Bp. Hall.

2. Not producing vegetation, or useful vegetation; sterile. ``Barren mountain tracts.''
   --Macaulay.

3. Unproductive; fruitless; unprofitable; empty.

   Brilliant but barren reveries.
   --Prescott.

   Some schemes will appear barren of hints and matter.
   --Swift.

4. Mentally dull; stupid.
   --Shak.

   Barren flower, a flower which has only stamens without a pistil, or which has neither stamens nor pistils.

   Barren Grounds (Geog.), a vast tract in British America northward of the forest regions.

   Barren Ground bear (Zo["o]l.), a peculiar bear, inhabiting the Barren Grounds, now believed to be a variety of the brown bear of Europe.

   Barren Ground caribou (Zo["o]l.), a small reindeer ( Rangifer Gr[oe]nlandicus) peculiar to the Barren Grounds and Greenland.