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Helianthemum canadense Helianthemum canadense (L.) Michx. Crocanthemum canadense (L.) Britton Helianthemum canadense (L.) Michx. var. sabulonum Fernald Longbranch Frostweed
Helianthemum means roughly “sunflower,” from the Greek Ἥλιος (helios), or sun, and ανθέμιον (anthemion), or flower. These plants are native to North America. Identification: Plants are 8-24" (20-60 cm) tall, branching from a single stem to multiple branches when mature, with the new branches larger than the original. Leaves are alternate, narrow, tapered at both ends. Flowers are bright yellow, with five overlapping petals, ⅝-1" (1.7-2.9 cm) in diameter. Flowers appear from May to June. Online References:
Helianthemum canadense at the University of Wisconsin's Robert W. Freckmann Herbarium Helianthemum canadense on Plants for a Future, a resource and information centre for edible and otherwise useful plants Helianthemum canadense on www.pbase.com Helianthemum canadense at the Lady Bird Johnson Wildflower Center
5/25/2010 · Nashua River Rail Trail, Ayer, MA
6/1/2012 · Pearl Hill State Park, Townsend, MA
5/25/2010 · Nashua River Rail Trail, Ayer, MA
6/2/2016 · Townsend Wildlife Management Area, Townsend, MA Helianthemum canadense description by Thomas H. Kent, last updated 25 May 2020.
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6/2/2016 · Townsend Wildlife Management Area, Townsend, MA
6/1/2012 · Pearl Hill State Park, Townsend, MA
6/1/2012 · Pearl Hill State Park, Townsend, MA
6/22/2010 · Nashua River Rail Trail, Ayer, MA
6/2/2016 · Townsend Wildlife Management Area, Townsend, MA
6/21/2017 · Pearl Hill State Park, Townsend, MA
6/2/2016 · Townsend Wildlife Management Area, Townsend, MA Range:
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ID is uncertain 
