| http://www.w3.org/ns/prov#value | - St. Louis, MO: Missouri Botanical Garden, 2001- . http://www.mobot.org/MOBOT/research/APweb/.???This series of pages is a set of characterizations of all orders and families of extant angiosperms (flowering plants) and gymnosperms, i.e. all seed plants?????? It is designed as a teaching tool and is frequently updated.
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