Silphium (gènere) (Catalan Wikipedia)

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

refsWebsite

Global rank Catalan rank

732^nd place

643^rd place

3,075^th place

363^rd place

438^th place

345^th place

607^th place

167^th place

ars-grin.gov

Germplasm Resources Information Network (GRIN). «GRIN Species Records of Silphium». Taxonomy for Plants. USDA, ARS, National Genetic Resources Program, National Germplasm Resources Laboratory, Beltsville, Maryland. [Consulta: 16 febrer 2011].^{[Enllaç no actiu]}

efloras.org

«Silphium». Flora of North America.
Clevinger, Jennifer A. «269. Silphium Linnaeus». Flora of North America. Oxford University Press [New York & Oxford], 21, pàg. Page 65, 77, 157 [Consulta: 24 juny 2008].

ipni.org

International Organization for Plant Information (IOPI). «Plant Name Search». International Plant Names Index. [Consulta: 24 juny 2008].

usda.gov

plants.usda.gov

«Plants Profile for Silphium (rosinweed)» (en anglès). Natural Resource Conservation Service. [Consulta: 23 novembre 2019].