Grindelia lanceolata

Grindelia lanceolata is a species of flowering plant in the aster family known by the common name Narrowleaf gumweed.

Grindelia lanceolata
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Astereae
Genus:	Grindelia
Species:	G. lanceolata
Binomial name
Grindelia lanceolata Nutt. 1834
Synonyms[1]
Grindelia littoralis Steyerm. Grindelia texana Scheele Grindelia greenei Steyerm.

Distribution

Grindelia lanceolata is native to the south-central United States, primarily in the Ozarks, the Interior Low Plateaus, the southern Great Plains (Texas, Oklahoma, New Mexico, Colorado), and Northeastern Mexico. There are also isolated populations (some of them apparently naturalized) in New Mexico, Colorado, Wisconsin, Ohio, Virginia, South Carolina, and Connecticut.

The species' preferred habitat is limestone glades and rocky prairies.[2]

Description

Grindelia lanceolata is a short-lived monocarpic perennial up to 150 cm (5 feet) tall. Leaves are up to 11 cm (4.4 inches) long, generally with no hairs or only a few hairs. The plant produces yellow flower heads in the summer, usually in flat-topped arrays but sometimes only one per flower stalk. Each head contains 12-36 ray flowers surrounding numerous disc flowers.[3][2]

References

1. The Plant List, Grindelia lanceolata Nutt.
2. Grindelia lanceolata in Flora of North America
3. Jerry M. Baskin & Carol C. Baskin. The Grindelia lanceolata Plant Community Type in Cedar Glades of the Central Basin of Tennessee. 'Castanea', Vol. 61, No. 4 (Dec., 1996), pp. 339-347