P. cembra var. sibirica Loud
, and is by some botanists included in it without differentiation. The main differences are that in the Siberian tree the leaves are longer, the cones longer and relatively narrower, with thinner scales. Its distribution in Russia is vast, from about 55° E. to an eastern limit around 1250 E. Its name in Russian is
. In English translations of Russian works this is usually misleadingly rendered as ‘cedar’.