Returning from a Rim Trail walk one April my boots were yellow from a prolific release of pollen from flowers of these tall trees that develop into the woody cones.

Pinus, the pine, is the largest genus in the family Pinaceae, with around 100 species throughout the northern hemisphere.

Red Pine (Pinus resinosa) is Minnesota’s state tree, known there as the Norway Pine. The use of the name “Norway” may stem from early Scandinavian immigrants who likened the American red pines to the Scots pines back home.

“Red pine is a coniferous evergreen tree characterized by tall, straight growth. It usually ranges from 20–35 meters (66–115 feet) in height and 1 m (3 ft 3 in) in trunk diameter, exceptionally reaching 43.77 m (143+1⁄2 ft) tall. The crown is conical, becoming a narrow, rounded dome with age. The bark is thick and gray brown at the base of the tree, but thin, flaky and bright orange red in the upper crown; the tree’s name derives from this distinctive character. Some red color may be seen in the fissures of the bark. The species is self-pruning; there tend not to be dead branches on the trees, and older trees may have very long lengths of branchless trunk below the canopy.”

“It is a long-lived tree, reaching a maximum age of about 500 years. Another member of Pinus, Pinus longaeva D.K. Bailey, the intermountain bristlecone pine, is the longest-lived tree in the world; one in the White Mountains of Nevada is estimated to be 5,000 years old, and by matching rhe rings with even older dead trees, a sequence going back 8,500 years has been established.”

“Red pine is notable for its very constant morphology and low genetic variation throughout its range, suggesting it has been through a near extinction in its recent evolutionary history. A genetic study of nuclear microsatellite polymorphisms among populations distributed throughout its natural range found that red pine populations from Newfoundland are genetically distinct from most mainland populations, consistent with dispersal from different glacial refugia in this highly self-pollinating species.”

Click Me for the first post in this series.

References

–text in italics and quotes is from Wikipedia, “Pinus resinosa.”

–“The Botanical Garden Vol I Trees and Shrubs,” Roger Phillips and Martyn Rix, Firefly Books, 2002.

Copyright 2023 All Rights Reserved Michael Stephen Wills