Silphium (genus)

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Silphium
Silphium integrifolium compressed.JPG
Silphium integrifolium
Scientific classification edit
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Supertribe: Helianthodae
Tribe: Heliantheae
Genus: Silphium
L.
Type species
Silphium asteriscus

Silphium is a genus of North American plants in the sunflower tribe within the daisy family.[1][2]

Members of the genus, commonly known as rosinweeds, are herbaceous perennial plants growing to 0.2 m (8 in) to more than 2.5 m (8 ft 2 in) tall, with yellow (rarely white) flowerheads that resemble sunflowers. In the rosinweeds, the outer florets in the head are fertile and the inner florets are sterile;[3] in the sunflowers, the reverse is true.[4]

The name of the genus comes from the Ancient Greek word for a North African plant whose identity has been lost, though it is known its gum or juice was prized by the ancients as a medicine and a condiment.[3]

Species[edit]

Species in the genus include:[5][3][6][7][8][9]

Formerly included[edit]

Numerous species are now regarded as members of the genera Berlandiera and Verbesina.[5]

See also[edit]

References[edit]

  1. ^ Linnaeus, Carl (1753). Species Plantarum (in Latin). 2. pp. 919–920.
  2. ^ "Silphium L.". Tropicos. Missouri Botanical Garden.
  3. ^ a b c Clevinger, Jennifer A. "Silphium". In Flora of North America Editorial Committee. Flora of North America North of Mexico (FNA). New York and Oxford. Retrieved 2008-06-24 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  4. ^ Schilling, Edward E. (2006). "Helianthus". In Flora of North America Editorial Committee. Flora of North America North of Mexico (FNA). 21. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  5. ^ a b Flann, C (ed) 2009+ Global Compositae Checklist Archived 2014-11-06 at Archive.is
  6. ^ International Organization for Plant Information (IOPI). "Plant Name Search". International Plant Names Index. Retrieved 2008-06-24.
  7. ^ "Silphium". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 2008-06-24.
  8. ^ "Silphium". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2011-02-16.
  9. ^ "Silphium". County-level distribution maps from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.

External links[edit]