White Spruce, Picea glauca (Moench) Voss.
DISTINGUISHING CHARACTERISTICS: Leaves linear, four-sided, evergreen, 1/3 to 3/4 inch long, green or light blue-green, with woody, peglike bases that remain on the twig when the green portions fall, spirally arranged and extending from the twig in several directions. Twigs gray on new growth. Buds with recurved scales. Cones pendant, 1 to 2 1/2 inches long, their scales dull light brown, rigid, with entire, rounded margins. Bark thin, dark, scaly.
SIMILAR TREES: Norway and blue spruces have larger cones and orangeish twigs. See also firs and Douglas=fir in the discussion of Norway spruce.
IOWA DISTRIBUTION: Planted throughout the state.
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