Silphium (genus) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Silphium (genus)" in English language version.

refsWebsite

Global rank English rank

732^nd place

800^th place

1biodiversitylibrary.org

387^th place

373^rd place

713^th place

3,176^th place

1iplantcollaborative.org

low place

low place

14^th place

14^th place

3,075^th place

3,035^th place

438^th place

336^th place

607^th place

747^th place

9,082^nd place

5,078^th place

archive.today

Flann, C (ed) 2009+ Global Compositae Checklist Archived 2014-11-06 at archive.today

ars-grin.gov

npgsweb.ars-grin.gov

"Silphium". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 2011-02-16.

biodiversitylibrary.org

Linnaeus, Carl (1753). Species Plantarum (in Latin). Vol. 2. pp. 919–920.

bonap.net

"Silphium". County-level distribution maps from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.

efloras.org

Clevinger, Jennifer A. "Silphium". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). New York and Oxford: Oxford University Press. Retrieved 2008-06-24 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Schilling, Edward E. (2006). "Helianthus". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 21. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

iplantcollaborative.org

dixon.iplantcollaborative.org

Flann, C (ed) 2009+ Global Compositae Checklist Archived 2014-11-06 at archive.today

ipni.org

International Organization for Plant Information (IOPI). "Plant Name Search". International Plant Names Index. Retrieved 2008-06-24.

tropicos.org

"Silphium L.". Tropicos. Missouri Botanical Garden.

usda.gov

plants.sc.egov.usda.gov

NRCS. "Silphium". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 2008-06-24.