The Probert Encyclopaedia of Nature

PICEA

Picea (popularly known as the spruces) is a genus of hardy evergreen trees belonging to the family Coniferae. They bear monoecious flowers, and needle- shaped leaves, and more or less ovoid cones, the bracts of which do not fall away at maturity. Among the species are the White Spruce (Picea alba) a native of Canada, the Black Spruce (Picea nigra) grown in north America for the manufacture of paper pulp and the Norway Spruce (Picea excelsa), grown for timber.
Research Picea