Heartwood 1 : The inner core of a woody stem composed of non-living cells and usually differentiated from the outer wood layer (sapwood) by its darker colour. See: cambium.
British Columbia Ministry of Forests and Range, Acronyms and Initialisms for Forestry Terms in British Columbia, Canada 2008. http://www.for.gov.bc.ca/hfd/library/documents/acr onyms/ & http://www.for.gov.bc.ca/hfd/library/documents/glo ssary/Glossary.pdf, (For Fr - Canad) {16}
