text: The hybrid Larix × marschlinsii, the Dunkeld larch, is an artificial hybrid L. decidua × L. sibirica that arose more or less simultaneously in Switzerland and Scotland.
  Larix × stenophylla  is another probable hybrid still unresolved.
  Larch is used as a food plant by the larvae of a number of Lepidoptera species.
  Ecology
  Larches are associated with a number of mycorrhizal fungal species, including some species which primarily or only associate with larch. One of the most prominent of these species is the larch bolete Suillus grevillei.
  Diseases
  Larches are prone to the fungal canker disease Lachnellula ssp. (larch canker); this is particularly a problem on sites prone to late spring frosts, which cause minor injuries to the tree allowing entry to the fungal spores. In Canada, this disease was first detected in 1980 and is particularly harmful to an indigenous species larch, the tamarack, killing both young and mature trees.
  Larches are also vulnerable to Phytophthora ramorum. In late 2009 the disease was first found in Japanese larch trees in the English counties of Devon, Cornwall and Somerset, and has since spread to the south-west of Scotland.
  In August 2010 the disease was found in Japanese larch trees in counties Waterford and Tipperary in Ireland and in 2013 in the Afan Forest Park in south Wales.