Volume IV (1988) - Flora of New Zealand Naturalised Pteridophytes, Gymnosperms, Dicotyledons
Copy a link to this page Cite this record

Picea A.Dietr.

PICEA A. Dietr.

Evergreen, conic or pyramidal, resinous trees with thin scaly bark and whorled branches. Short shoots 0. Winter buds generally not resinous, ovoid or conic, rounded to subacute. Lvs solitary, spirally arranged, ± 2-ranked (except on young erect shoots), inserted on a persistent peg-like projection of the shoot (thus older leafless part of shoots rough), linear and flat to quadrangular, green above and with 2 greyish stomatal bands on lower (inverted adaxial) surface, or stomatiferous on all 4 sides, usually with 2 marginal resin ducts. ♂ strobili (cones) axillary, cylindric or catkin-like, yellow to red, erect or pendent. ♀ cones terminal, ripening in first year, generally purplish before maturity, pendent; ovuliferous scales always much > bract scales, rather thin; ovules 2 to each scale. Mature cones not disintegrating, pendulous, generally cylindric. Seed winged.

Key

1
Lvs strongly flattened in section, with stomatal bands 0 or in 1-2 often broken rows on upper surface, in c. 10 rows on lower surface; cones < 6 cm long, the scales very thin and flexible
Lvs ± quadrangular in section, with stomatal bands in 4-8 rows on each side; cones usually > 10 cm long, the scales moderately thin and flexible

c. 40 spp., N. temperate zone. Naturalised spp. 2.

Click to go back to the top of the page
Top