Thelesperma filifolium

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Thelesperma filifolium
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Status TNC G4.svg
Apparently Secure  (NatureServe)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Thelesperma
Species:
T. filifolium
Binomial name
Thelesperma filifolium
Synonyms [1]
  • Coreopsis filifoliaHook.
  • Coreopsis trifidaPoir.
  • Cosmidium burridgeanumRegel
  • Cosmidium filifolium(Hook.) Nutt.
  • Thelesperma filifolium var. filifolium(Hook.) A.Gray
  • Thelesperma filifolium var. intermedium(Rydb.) Shinners
  • Thelesperma intermediumRydb.
  • Thelesperma intermedium var. intermedium
  • Thelesperma trifidumBritton

Thelesperma filifolium, commonly known as stiff greenthread, [2] or plains greenthread, [3] is a species of flowering plant in the aster family, Asteraceae. It is often found growing in shallow soils. It prefers disturbed sites in dry, sandy or gravelly soil with a neutral to basic pH. Stiff greenthread adapts to various soil conditions, including loam, clay, caliche, and roadsides. It blooms between March and June and often into the fall. [ citation needed ]

Contents

Distribution

In Texas, stiff greenthread can be found growing along roadsides and on dry hills in the South Plains and Edwards Plateau regions. The herb grows over much of the plains and mountain states, reaching up to Wyoming, Montana, Nebraska and South Dakota. It grows prolifically on the Navajo, Hopi, and Pueblo lands, as well as throughout much of New Mexico, Arizona and Colorado.[ citation needed ]

Description

Having a taproot, it is extremely resistant to drought, but thrives in rain. The designation greenthread is most appropriate, as it has thin, thread-like leaves. It can be single-stemmed or multi-stemmed, and reaches a height of 12 to 26 inches. The leaves are scattered along the whole stem. The daisy-like, 2 inch, eight-ray flowers are golden-yellow and the numerous disk flowers are reddish to dark brown. The urn-shaped bloom buds droop downward prior to opening. The inner whorl of phyllaries surrounding the lower portion of the bloom is translucent, which allows the colors of the developing flowers to be seen. When open, there are two types of phyllary at the base of the bloom: one is short and green, the other red and long.

Ecology

The ripened seeds are a food source for the multi-colored painted bunting. It does not appear to be eaten by deer. It is a larval host for the dwarf yellow butterfly. [4]

Uses

The crushed leaves offer a pleasant aroma and can be made into tea, which is sometimes used medicinally by several Native American tribes. This is especially widespread among southwest tribes, where it is named Navajo tea, Hopi tea, or Indian tea.[ citation needed ]

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References

  1. "Thelesperma filifolium (Hook.) A.Gray". www.worldfloraonline.org. Retrieved 2023-07-10.
  2. USDA, NRCS (n.d.). "Thelesperma filifolium". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 9 December 2015.
  3. "Thelesperma filifolium". Integrated Taxonomic Information System . Retrieved 2011-02-09.
  4. "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2019-07-26.