bedstraw

noun3

1. •
   Any plant of herb genus Galium of the madder family with small pointed leaves and hairy stems with small, white or yellow flowers.
2. •
   Any plant of the genus Cruciata.
3. •
   (no longer used) Straw placed into a bed.

   • Fleas breed principally of straw or mats, where there hath been a little moisture; or the chamber and bedstraw kept close and not aired — 1627