Linear measurements of cones and seed scales unequivocally show that Karelian spruces should be treated as Siberian Picea obovata.
For molecular analysis, we are using three polymorphic fragments which are already known as producing good results in the studies of spruces phylogeny: non-coding regions of chloroplast DNA (trnT-trnL intergenic spacer and trnL (UAA) intron) and polymorphic fragment of the second intron of mitochondrial nadl gene.
Sand-mining operations in Michigan have uncovered a true forest primeval--a 10,000-year-old spruce
woods buried in sand.
Snow depth permitting, my wife and I cruise the back roads in search of spruces
that might fit comfortably twixt our floor and ceiling.
This tiny cluster of Sitka spruce
surely comprise America's smallest forest.
After the spruce
budworms work for a while, weakening the stand, they're followed by the Douglasfir bark beetle," said Averill.
For example, the spruce
budworm has so damaged Maine's fir resource that it will take years to heal.
Honest, I'm going up to the Nicolet National Forest to try to find a great big black spruce
that I remember seeing years ago.
Green walls of salmonberry, elderberry, blueberry, devil's club, and young Sitka spruce
and hemlock trees have made walking impossible.
Because dogs don't understand these things, they sat quietly and traded suspicious glances while I swung the pick and dug the three holes in which the three spruces
might ride on into the next century.
A spokesperson from Spruce
Salon commented on the recognition: "This is quite an honor for us.
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