Picea A. Dietr.

4. Picea A. Dietr. View in CoL 1

Evergreen trees with regularly whorled branches. Short shoots absent. Leaves spirally arranged, linear, flattened or tetragonal; resin-canals 0-2; leaves borne on persistent, peg-like projections. Male flowers in leaf-axils of previous year’s twigs. Cones ripening in the first year, ovoid or cylindrical; scales persistent; bracts minute, not exserted.

1 Leaves flattened, with two white stomatiferous bands only on

the upper surface

2 Leaves15-25mm, pungent;cones6 -10 cm 6. sitchensis

2 Leaves 8-18 mm, obtuse and mucronulate; cones 3-6 cm 7. omorika

1 Leaves tetragonal, stomatiferous on all four sides

3 Twigs glabrous or with scattered, minute pubescence

4 Cones 3-5-5 cm; leaves with a strong, unpleasant smell when

crushed 3. glauca

4 Cones 6-18 cm; leaves not smelling unpleasantly when

crushed

5 Cones 6-10 cm; leaves bluish-green 5. pungens

5 Cones 10-18 cm; leaves dark green 1. abies

3 Twigs denselyandshortlypubescent

6 Leaves 6-10 mm, obtuse 2. orientalis

6 Leaves 10-25 mm, acute

7 Twigs brown; leaves 10-18 mm; scales obovate, with

rounded and entire or emarginate apex 1. abies

7 Twigs pale yellowish-brown; leaves 15-25 mm; scales

rhombic-oblong, narrowed, truncate and erose at apex

4. engelmannii