Grown habit: Forb/herb
Duration: Annual
Synonyms:
= Polygonum douglasii Greene var. microspermum (Engelm.) Dorn
= Polygonum engelmannii Greene
= Polygonum microspermum (Engelm.) Small
= Polygonum tenue Michx. var. microspermum Engelm.
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Distribution in USA and Canada (*)
USA (CO, ID, MT, NV, UT, WY), CAN (AB, BC)
Map for Polygonum douglasii Greene ssp. engelmannii (Greene) Kartesz & Gandhi
(*) USDA, NRCS. 2009. The PLANTS Database (http://plants.usda.gov, 28 August 2009). National Plant Data Center, Baton Rouge, LA 70874-4490 USA
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