Bur

A bur or burr is a seed or dry fruit that bear hooks or teeth which will attach themselves to animal fur or human clothing. These can be very irritating to get off of clothing, such as wool, cotton, or Velcro (which was inspired by burs).

Examples of genera or species that produce burs:


 * Acaena - piri-piri
 * Agrimonia - Agrimony
 * Ambrosia - Ragweed
 * Arctium - Burdock
 * Bidens - Bur marigold
 * Circaea - Enchanter's Nightshades
 * ''Galium aparine - Goosegrass
 * Geum - Avens
 * Hackelia - Stickseed
 * Osmorhiza Cicely