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Bedeguar, bed′e-gar, n. a soft spongy gall found on the branches of some species of roses, esp. the sweet-brier, called also the sweet-brier sponge.

This was called in the old Pharmacopeias "Bedeguar," and was famous for its astringent properties.

A vegetable secretion and concretion is thus produced on oak-leaves by the gall-insect, and by the cynips in the bedeguar of the rose; and by the young grasshopper on many plants, by which the animal surrounds itself with froth.

This in respect to the production of the fruit surrounding the seeds of trees has been assimilated to the gall-nuts on oak-leaves, and to the bedeguar on briars, but there is a powerful objection to this doctrine, viz. that the fruit of figs, all which are female in this country, grow nearly as large without fecundation, and therefore the embryon has in them no self-living principle.