Thelesperma subnudum, commonly known as Navajo tea, is a perennial species of flowering plant in the family Asteraceae. It is found from west central Canada to central United States. It grows in openings in pinyon/juniper or yellow pine forests.
Thelesperma subnudum is a perennial herb that typically grows between tall. The cauline leaves are "mostly crowded over proximal 1/4(âÂÂ1/2) of plant heights". The calyculi are "of 7âÂÂ9 deltate to lance-linear bractlets 2âÂÂ4+ mm". There are 0 or 8 ray florets per flower head. The ray laminae are yellow, typically long. The disc corollas are yellow, sometimes with red-brown nerves. The cypselae are long.
It typically blooms from May to September.
It is native to Alberta, Arizona, Colorado, Montana, Nevada, New Mexico, North Dakota, Utah, and Wyoming.
It grows at elevations of 1000âÂÂ2900 meters from sea level in openings in pinyon/juniper or yellow pine forests.
The Navajo have used the flower to produce a yellow to orange dye solution for dyeing woolen yarns.
As of July 2023, Plants of the World Online has 2 varieties listed for this taxon: