yellow daylily USDA PLANTS Symbol: HELI4
U.S. Nativity: Exotic
Habit: Forbs/Herbs
Hemerocallis lilioasphodelus L.

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Taxonomic Rank: Liliopsida: Liliales: Liliaceae
Native Range: Temp. Asia, Europe (GRIN); E. Siberia to Japan (BAIL);

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit

State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

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U.S. National Parks where reported invasive:
Antietam National Battlefield (Maryland)
Rock Creek National Park (Washington, D.C.)

Invasive Listing Sources:
Faith Campbell, 1998
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
Mid-Atlantic Exotic Pest Plant Council, 2005