Euthamia leptocephala

Euthamia leptocephala
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Euthamia
Species:	E. leptocephala
Binomial name
Euthamia leptocephala (Torr. & A.Gray) Greene ex Porter & Britton
Synonyms [1]
Aster leptocephalus(Torr. & A.Gray) Kuntze Solidago leptocephalaTorr. & A.Gray Euthamia chrysothamnoidesGreene [2]

Euthamia leptocephala, (commonly known as the narrowhead goldenstop, Mississippi Valley goldentop, or bushy goldentop) ^[3] or is a North American species of plants in the family Asteraceae. It is native to the south-central United States, in the lower Mississippi Valley and the Coastal Plain of the Gulf of Mexico, from Texas to west-central Georgia and north as far as southern Illinois.

Description

Euthamia leptocephala is a perennial herb or subshrub up to 100 cm (40 inches) tall. Leaves are alternate, simple, long and narrow, up to 8 cm (3.2 inches) long. One plant can produce many small, yellow flower heads flat-topped arrays. Each head has 7-14 ray florets surrounding 3-6 disc florets. ^[4]

Galls

This species is host to the following insect induced galls:

• Asteromyia euthamiae Gagné, 1968 forms black spots on leaf blades
• Epiblema desertana (Zeller, 1875) causes stem swelling.

external link to gallformers

References

1. The Plant List, Euthamia leptocephala (Torr. & A.Gray) Greene ex Porter & Britton
2. Photo of herbarium specimen at Missouri Botanical Garden, collected in Arkansas in 1882, type of Euthamia chrysothamnoides, annotated as Euthamia leptocephala
3. NRCS. "Euthamia leptocephala". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 8 July 2015.
4. Flora of North America, Euthamia leptocephala (Torrey & A. Gray) Greene ex Porter & Britton, 1894. Mississippi Valley goldentop

• Media related to Euthamia leptocephala at Wikimedia Commons