hapteron
/ˈhaptərɒn/noun
An organ of attachment in certain aquatic plants, algae, fungi, and lichens; especially the holdfast of an alga or each of the rootlike branches into which the holdfast may be divided.
Origin
Late 19th century; earliest use found in Journal of the Royal Microscopical Society. From scientific Latin haptera, plural, irregularly from ancient Greek ἅπτειν to fasten, after Danish hapterer, plural, German Hapteren, plural.