Species Synonym(s): None
Common Name(s): curly-cup gumweed, curlytop gumweed, gumweed, rosinweed, tarweed
Family: Asteraceae (Aster Family)
Family Synonym(s): None
Native Range (GRIN):
Selected images from Bugwood.org
Mary Ellen (Mel) Harte
Dave Powell, USDA Forest Service (retired)
Steve Dewey, Utah State University
Chris Evans, University of Illinois
Steve Dewey, Utah State University
Steve Dewey, Utah State University
Chris Evans, University of Illinois
Caleb Slemmons, National Ecological Observatory Network
Landscape Ornamental Use (GRIN): No
All Uses (GRIN):
Summary: curlycup gumweed (Grindelia squarrosa) is a Terrestrial/Wetland species.
Mid-Atlantic Coastal Plain regions
Mid-Atlantic Piedmont and Mountain regions
Northern parts of PA and NJ (and beyond)
OBL (Obligate wetland): Almost always occurs in wetlands (estimated probability > 99%) under natural conditions
FACW (Facultative wetland): Usually occurs in wetlands (estimated probability 67% - 99%), but occasionally found in non-wetlands
FAC (Facultative): Equally likely to occur in wetlands (estimated probability 34% - 66%) or non-wetlands
FACU (Facultative upland): Usually occur in non-wetlands (estimated probability 67% - 99%), but occasionally found in wetlands (estimated probability 1% - 33%)
UPL (Obligate upland): Occur almost always (estimated probability > 99%) in non-wetlands under natural conditions
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Asteridae |
| Order: Asterales |
| Family: Asteraceae |
| Genus: Grindelia |
| Subject: Grindelia squarrosa (Pursh) Dunal |