]> NEBC barcode-00875010 United States of America Massachusetts Boxborough, Valley of the Assabet River, Guggins Brook Arisaema triphyllum subsp. stewardsonii (Britton) Huttleston (Britton) Huttleston 2020-11-16 17:45:35 F. T. Hubbard & G. S. Torrey