Grindelia squarrosa var. nuda [Asteraceae]

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Scientific Name Grindelia squarrosa var. nuda USDA PLANTS Symbol GRSQN
Common Name Curlycup Gumweed ITIS Taxonomic Serial No. 535925
Family Asteraceae (Sunflower) Flora of North America Ref. Click Here
Description Habitat: Calcareous and sandy soils, clays; disturbed sites, plains, hills, roadsides, along streams.
Plant: Erect annual 16 to 40 inches tall.
Leaves: Alternate, somewhat clasping, oblong to oblanceolate, 1 to 2-3/4 inches long; light-green to green, toothed edges and gland-dotted surfaces.
Inflorescence: Composite gummy-sticky flower heads, very prominent recurved phyllaries below, many disk florets and no rays.
Bloom Period: July to October.
References: SEINet, Missouriplants.com, and "Manual of the Vascular Plants of Texas" by Correll and Johnston.
Note: The more common relative G. squarrosa var. squarrosa is widely distributed in the rest of the US and has 25 to 40 yellow rays.
BONAP Distribution Map

Texas Status:

© Tom Lebsack 2023