![]() ![]() ![]() Over the last two years, the RSA-POM Herbarium has been actively reorganizing both its digital and physical collections to follow the vascular plant families of the newest classification system, the Angiosperm Phylogeny Group (APG IV). Since that time, many outdated families that are no longer recognized – of which Thorne had recognized in his system of classification – have remained in the collection. The last time the RSA-POM Herbarium experienced a major shift in the arrangement of its collection was nearly 20 years ago. Nevertheless, Thorne was a strong proponent of an alphabetical arrangement of herbaria, and organized the RSA-POM collection accordingly. Thorne, whose research interests were largely centered on floristics and plant geography, is best known for his synoptic work to develop a classification system to accommodate all. Since the mid 1960’s, the combined herbaria of Rancho Santa Ana Botanic Garden and Pomona College have followed the classification system of Taxonomist and Curator, Dr.
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June 2023
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