Gamochaeta argyrinea

Gamochaeta argyrinea, called silvery cudweed[1] or silvery everlasting,[2] is a North American species of flowering plant in the sunflower family. It is widespread across the southeastern and south-central United States from Delaware south to Florida and west as far as southeastern Kansas and central Texas. It has also been found in Puerto Rico and in northern California (probably introduced).[3][4][5]

Gamochaeta argyrinea
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Tribe:
Gnaphalieae
Genus:
Gamochaeta
Species:
G. argyrinea
Binomial name
Gamochaeta argyrinea

Gamochaeta argyrinea is an annual herb up to 40 cm (16 in) tall. Leaves are up to 8 cm (3.1 in) long, green on the top but appearing silvery on the underside because of many woolly hairs. The plant forms many small flower heads in elongated arrays. Each head contains 4–6 purple or yellow-brown disc flowers but no ray flowers.[1][6]

References
  1. Flora of North America, Gamochaeta argyrinea G. L. Nesom, 2004. Silvery cudweed
  2. "Gamochaeta argyrinea". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 17 July 2015.
  3. Guy L. Nesom 2004. New distribution records for Gamochaeta (Asteraceae: Gnaphalieae) in the United States. Sida 21(2): 1175–1185.
  4. Biota of North America Program 2014 county distribution map
  5. Calflora taxon report, University of California, Gamochaeta argyrinea G.L. Nesom
  6. Nesom, Guy L. 2004. Sida 21(2): 717–741 in English with summary in Spanish; Latin diagnosis on page 721, photos of herbarium specimens on pages 719–720, color photos of flower heads and line drawings of phyllaries on page 723, county-level distribution map on page 731


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