1. bladder fern any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sori
  2. boulder fern fern of eastern North America with pale green fronds and an aroma like hay
  3. bladder fucus a common rockweed used in preparing kelp and as manure
  4. leather fern stout tropical swamp fern (especially tropical America) having large fronds with golden yellow sporangia covering the undersides
  5. bladder senna yellow-flowered European shrub cultivated for its succession of yellow flowers and very inflated bladdery pods and as a source of wildlife food
  6. bladdernose medium-sized blackish-grey seal with large inflatable sac on the head; of Arctic and northern Atlantic waters
  7. bladder cherry Old World perennial cultivated for its ornamental inflated papery orange-red calyx
  8. bladder stone a calculus formed in the bladder
  9. oleander fern tropical fern having leathery fronds resembling oleander
  10. black tree fern a showy tree fern of New Zealand and Australia having a crown of pinnated fronds with whitish undersides
  11. bladder worm encysted saclike larva of the tapeworm
  12. bladderwort any of numerous aquatic carnivorous plants of the genus Utricularia some of whose leaves are modified as small urn-shaped bladders that trap minute aquatic animals
  13. glade fern North American fern with narrow fronds on yellowish leafstalks
  14. interference the act of hindering or obstructing or impeding
  15. Lathyrus vernus bushy European perennial having nodding racemose violet-blue flowers
  16. bladderwrack a common rockweed used in preparing kelp and as manure
  17. Platte River a river in Nebraska that flows eastward to become a tributary of the Missouri River
  18. buckler fern any of various ferns of the genera Dryopteris or Polystichum or Lastreopsis having somewhat shield-shaped coverings on the sori
  19. spider fern fern of North Africa and Azores and Canary Islands
  20. Plata River an estuary between Argentina and Uruguay