Grindelia scabra explained

Grindelia scabra, the rough gumweed, is a rare North American species of flowering plants in the family Asteraceae. It has been found in northern Mexico (Coahuila) and the southwestern United States (western Texas and southern New Mexico).[1] [2]

Grindelia scabra grows in dry rocky slopes and on top of mesas (flat-topped hills). It is an annual, biennial, or perennial herb up to 70cm (30inches) tall. The plant usually produces numerous flower heads in open flat-topped arrays. Each head has 17-30 ray flowers, surrounding a large number of tiny disc flowers.[3]

External links

Notes and References

  1. http://bonap.net/MapGallery/County/Grindelia%20pusilla.png Biota of North America Program 2014 county distribution map
  2. https://www.biodiversitylibrary.org/page/13062647#page/72/mode/1up Nesom, G.L. 1990. Studies in the systematics of Mexican and Texan Grindelia (Asteraceae: Astereae. Phytologia 68(4): 303–332
  3. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066819 Flora of North America, Grindelia scabra Greene, 1898.