Jim Henrich, Curator of Living Collections, Los Angeles Arboretum, lectures about their tree collection. Photo by Clara Josephs, © 2015, all rights reserved.

Jim Henrich, Curator of Living Collections, Los Angeles Arboretum, lectures about their tree collection. Photo by Clara Josephs, © 2015, all rights reserved.

Jim Henrich, Curator of Living Collections, Los Angeles Arboretum, lectures about their tree collection. Photo by Clara Josephs, © 2015, all rights reserved.

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