Plants Profile for Grindelia squarrosa (curlycup gumweed)

General Information
Symbol:	GRSQ
Group:	Dicot
Family:	Asteraceae
Duration:	Annual Biennial Perennial
Growth Habit:	Forb/herb
Native Status:	CAN N L48 N
Plant Guide (pdf) (doc)
Data Source and Documentation

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	Native		Introduced		Both		Absent/Unreported
	Native, No County Data		Introduced, No County Data		Both, No County Data

Native Status:

L48

NAV

CAN

SPM

Images

click on a thumbnail to view an image, or see all the Grindelia thumbnails at the Plants Gallery

©Thomas G. Barnes. Barnes, T.G., and S.W. Francis. 2004. Wildflowers and ferns of Kentucky. University Press of Kentucky. Usage Requirements.

©Al Schneider. Southwest Colorado Wildflowers. United States, CO, NM, AZ, UT, Four Corners vicinity, within 150 miles of the corners. Usage Requirements.

Patrick J. Alexander. Usage Requirements.

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3: 371. Provided by Kentucky Native Plant Society. Scanned by Omnitek Inc. Usage Requirements.

Synonyms

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.

Rank	Scientific Name and Common Name
Kingdom	Plantae – Plants
Subkingdom	Tracheobionta – Vascular plants
Superdivision	Spermatophyta – Seed plants
Division	Magnoliophyta – Flowering plants
Class	Magnoliopsida – Dicotyledons
Subclass	Asteridae
Order	Asterales
Family	Asteraceae ⁄ Compositae – Aster family
Genus	Grindelia Willd. – gumweed
Species	Grindelia squarrosa (Pursh) Dunal – curlycup gumweed

Subordinate Taxa

The Plants Database includes the following 3 subspecies of Grindelia squarrosa . Click below on a thumbnail map or name for subspecies profiles.

Native

Introduced

Native and Introduced

Distribution of <i>Grindelia squarrosa</i> (Pursh) Dunal var. <i>quasiperennis</i> Lunell

Grindelia squarrosa var. quasiperennis
curlycup gumweed

Distribution of <i>Grindelia squarrosa</i> (Pursh) Dunal var. <i>serrulata</i> (Rydb.) Steyerm.

Grindelia squarrosa var. serrulata
curlycup gumweed

Distribution of <i>Grindelia squarrosa</i> (Pursh) Dunal var. <i>squarrosa </i>

Grindelia squarrosa var. squarrosa
curlycup gumweed

Legal Status

U.S. Weed Information
Grindelia squarrosa curlycup gumweed curlytop gumweed gumweed rosinweed tarweed This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S.
NE&GP	Stubbendieck, J., G.Y. Friisoe,and M.R. Bolick. 1994. Weeds of Nebraska and the Great Plains. Nebraska Department of Agriculture, Bureau of Plant Industry. Lincoln, Nebraska.
SWSS	Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM. Southern Weed Science Society. Champaign, Illinois.
WSWS	Whitson, T.D. (ed.) et al.. 1996. Weeds of the West. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming.

Wetland Status

Interpreting Wetland Status

North America
Arid West	FACU
Atlantic and Gulf Coastal Plain	FACU
Eastern Mountains and Piedmont	FACU
Great Plains	UPL
Midwest	FACU
Northcentral & Northeast	FACU
Western Mountains, Valleys, and Coast	FACU