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Thelesperma subnudum
Thelesperma subnudum, commonly known as Navajo tea,[2] 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. DescriptionThelesperma subnudum is a perennial herb that typically grows between 10 and 40 cm (3.9 and 15.7 in) tall. The cauline leaves are "mostly crowded over proximal 1/4(–1/2) of plant heights".[3] The calyculi are "of 7–9 deltate to lance-linear bractlets 2–4+ mm". There are 0 or 8 ray florets per flower head. The ray laminae are yellow, typically 12 to 20 mm (0.47 to 0.79 in) long. The disc corollas are yellow, sometimes with red-brown nerves. The cypselae are 5 to 7 mm (0.20 to 0.28 in) long.[2][3] It typically blooms from May to September.[3] Distribution and habitatIt is native to Alberta, Arizona, Colorado, Montana, Nevada, New Mexico, North Dakota, Utah, and Wyoming.[4][3][5] HabitatIt grows at elevations of 1000–2900 meters from sea level in openings in pinyon/juniper or yellow pine forests.[3] UsesThe Navajo have used the flower to produce a yellow to orange dye solution for dyeing woolen yarns.[6] TaxonomyVarietiesAs of July 2023, Plants of the World Online has 2 varieties listed for this taxon:[4]
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