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Trees of Hoyt Arboretum: Tanoak

Articles: Trees of Hoyt Arboretum: Tanoak

To David Douglas goes the honor of having discovered this magnificent tree. On an exploring trip into central California he encountered the tan oak, and sent dried specimens back to England. It was Professor Sargent of Harvard University who introduced tan oak to the garden; plants of his introduction of 1874 are still in the oak collection at the Royal Botanical Gardens, Kew, England.
Arthur R Kruckerberg, Gardening with Native Plants of the Pacific Northwest

Tanoak (Lithocarpus densiflorus) in Hoyt Arboretum, Portland. Photograph by Sean Hogan

The five-by-seven accession cards are yellowed with age, each entitled “Portland Municipal Arboretum” and inscribed with fountain pen and a careful hand. Many years before computerized databases, arborists kept the planting records on these cards at the Hoyt Arboretum in the west hills of the city. The record-keepers and their fountain pens left us long ago, but the hundreds of old cards remain protected in the arboretum archives. More importantly, many of the trees they describe—dawn redwoods, monkey puzzle trees, Brewer’s weeping spruce—are still here. Among t...


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