Thelesperma nuecense, the Rio Grande greenthread,[2] is a herbaceous annual flowering plant in the aster family.

There are 8 ray florets per flower head; the laminae are yellow, suffused with a red-brown spot or band.

[4] Thelesperma nuecense is endemic to Texas, and grows at elevations of 0 to 200 meters from sea level on "disturbed sites on sands".

[4][5] As of December 2024[update], the conservation group NatureServe listed Thelesperma nuecense as Apparently Secure (G4) worldwide.

[1] Thelesperma nuecense was first named and described by Billie Lee Turner in 1959 in the journal Rhodora.