Thelesperma longipes explained

Thelesperma longipes, the longstalk greenthread,[1] is a perennial species of flowering plant in the aster family. It is found from Arizona to northeast Mexico.

Description

It is a perennial herb or subshrub that grows tall. The cauline leaves are "mostly crowded over proximal 1/4–1/2 of plant heights".[2] The internodes are mostly long; the lobes are mostly linear to filiform, and are 5–45 × 0.5-1 mm. It flowers from March to October. There are 0 ray florets per flower head. The disc corollas are yellow, occasionally with red-brown nerves, the throats are equal to or longer than the lobes. The cypselae are 2-3 mm, and there are usually no pappi.[3]

Distribution and habitat

It grows in the United States (Arizona, Texas, New Mexico) and in Mexico (Coahuila, Nuevo León, San Luis Potosí, Tamaulipas) at elevations of 500 to 2100 meters from sea level on openings in desert scrub or limestone ridges.[4]

Notes and References

  1. Web site: USDA Plants Database . 2023-07-13 . plants.usda.gov.
  2. Web site: Thelesperma longipes - FNA . 2023-07-13 . floranorthamerica.org.
  3. Web site: Lady Bird Johnson Wildflower Center - The University of Texas at Austin . 2023-07-13 . www.wildflower.org.
  4. Web site: Thelesperma longipes A.Gray Plants of the World Online Kew Science . 2023-07-13 . Plants of the World Online . en.