larch 2Larches are conifers in the genus Larix, in the family Pinaceae. Growing from 20 to 45 m tall (65 to 147 ft), [1] they are native to much of the cooler temperate northern hemisphere, on lowlands in the north and high on mountains further south
There are 10–15 species; those marked with an asterisk (*) in the list below are not accepted as distinct species by all authorities.[citation needed] In the past, the cone bract length was often used to divide the larches into two sections (sect. Larix with short bracts, and sect. Multiserialis with long bracts), but genetic evidence[2] does not support this division, pointing instead to a genetic divide between Old World and New World species, with the cone and bract size being merely adaptations to climatic conditions. More recent genetic studies have proposed three groups within the genus, with a primary division into North American and Eurasian species, and a secondary division of the Eurasian into northern short-bracted species and southern long-bracted species;[3] there is some dispute over the position of Larix sibirica, a short-bracted species which is placed in the short-bracted group by some of the studies and the long-bracted group by others.

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