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By: Hertrich, William,Type: ArticleIn: Lasca leavesVolume: 5Series:Issue: Autumn 1955Date: 1955Page Range: 86-87Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976Subjects: Huntington Botanical Gardens Idria columnaris
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By: Holmes, NelsonType: ArticleIn: Arboretum NewsVolume: 1999:summerSeries:Issue:Date: 1999Page Range: 3Publication Info: Arcadia, Calif California Arboretum Foundation 1993Subjects: Beaucarnea stricta Ceanothus Idria columnaris Leucophyllum frutescens Quercus engelmannii