artilleryweed USDA PLANTS Symbol: PIMI2
U.S. Nativity: Native
Habit: Forbs/Herbs
Pilea microphylla (L.) Liebm.

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Taxonomic Rank: Magnoliopsida: Urticales: Urticaceae
Synonym(s): rockweed
Native Range: U.S.- Southeast, Mexico, and S. Amer. (GRIN);

Selected Images from Invasive.orgView All Images at

Plant(s); Habit in asphalt
Forest and Kim Starr, Starr Environmental,
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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.

U.S. National Parks where reported invasive:
Haleakala National Park (Hawaii)

Invasive Listing Sources:
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007