Gamochaeta simplicicaulis explained

Gamochaeta simplicicaulis, the simple-stem cudweed or simple-stem everlasting, is a species of flowering plant in the family Asteraceae. It is native to South America and has become naturalized in Australia, New Zealand, and the southeastern United States (from Alabama to Virginia).^{[1] [2] [3]}

Gamochaeta simplicicaulis is an annual herb up to 85cm (33inches) tall. Leaves are up to 9cm (04inches) long, green and hairless on the upper surface but appearing white on the underside because of many woolly hairs. The plant forms many small flower heads in elongated arrays and also in tightly packed clumps. Each head contains 2–3 yellow disc flowers but no ray flowers.^[4]

Notes and References

1. http://bonap.net/MapGallery/County/Gamochaeta%20simplicicaulis.png Biota of North America Program 2014 county distribution map
2. Zuloaga, F. O., O. Morrone, M. J. Belgrano, C. Marticorena & E. Marchesi. (eds.) 2008. Catálogo de las plantas vasculares del Cono Sur. Monographs in Systematic Botany from the Missouri Botanical Garden 107(1–3): i–xcvi, 1–3348.
3. Funk, V. A., P. E. Berry, S. Alexander, T. H. Hollowell & C. L. Kelloff. 2007. Checklist of the Plants of the Guiana Shield (Venezuela: Amazonas, Bolivar, Delta Amacuro; Guyana, Surinam, French Guiana). Contributions from the United States National Herbarium 55: 1–584
4. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242428360 Flora of North America, Gamochaeta simplicicaulis (Willdenow ex Sprengel) Cabrera, 1961. Simple-stem cudweed