Naming
Botanists today recognize two subspecies. The type subspecies, "E. ramosissimum" subsp. "ramosissimum", is native through much of Asia, Europe, and Africa, with an introduced population in the southeast United States. "E. ramosissimum" subsp."debile", sometimes treated as the separate species "E. debile", is found in southeast Asia and some Pacific islands. The type subspecies has more obvious branching from the aerial stem than subspecies "debile".References:
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