Silphium (genus)

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

This article is about the plant genus. For the extinct ancient plant, see Silphium.

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

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

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

Formerly included

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

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gollark: I knew I forgot one...
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See also

References
  1. Linnaeus, Carl (1753). Species Plantarum (in Latin). 2. pp. 919–920.
  2. "Silphium L.". Tropicos. Missouri Botanical Garden.
  3. Clevinger, Jennifer A. "Silphium". In Flora of North America Editorial Committee (ed.). 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 (ed.). 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. Flann, C (ed) 2009+ Global Compositae Checklist Archived 2014-11-06 at Archive.today
  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.


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