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Haustoria of creeping mistletoe on a Eucalyptus tree
Multiple Mistletoe haustoria on a dead gum tree

A haustorium (plural: haustoria) is a term in botany. It is a root-like structure which attaches to a tree or other plant host. Fungi and parasitic plants like mistletoe use haustoria to get nutrients from hosts.[1]

Contrast with the term epiphyte, which means "living on". Many other plants live on large trees, but only a few have hausteria.

References[change | change source]

  1. Szabo, Les (July 3, 2001). "Hidden robbers: The role of fungal haustoria in parasitism of plants". PNAS. 98 (14): 7654–7655. Bibcode:2001PNAS...98.7654S. doi:10.1073/pnas.151262398. PMC 35395. PMID 11438718.