Thelesperma megapotamicum

Thelesperma megapotamicum
File:Thelesperma megapotamicum flora.jpg
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Subfamily:	Asteroideae
Tribe:	Coreopsideae
Genus:	Thelesperma
Species:	T. megapotamicum
Binomial name
Thelesperma megapotamicum (Spreng.) Kuntze
Synonyms
Thelesperma gracile (Torr.) A.Gray

Thelesperma megapotamicum is a perennial species of flowering plant in the aster family known by the common name Hopi tea greenthread and rayless greenthread. It is native to sections of the Americas, including the central United States, where it grows in many types of habitat. It is a perennial herb producing a slender, branching stem 30 to 60 centimeters tall or more. The leaves are narrow, mostly compound with linear or threadlike segments measuring a few centimeters long. The inflorescence bears several flower heads each in a cuplike involucre of phyllaries with purple-tinged, pointed lobes with white edges. The head contains many yellow or orange disc florets, and sometimes one or more yellow ray florets, although these may be absent.

Native American groups such as the Hopi and Navajo use this plant to make herbal teas, as a medicinal remedy and a yellow dye.

External links

• Jepson Manual Treatment
• Flora of North America
• Photo gallery