Carduus pycnocephalus (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Carduus pycnocephalus" in English language version.

refsWebsite

Global rank English rank

low place

low place

1web.archive.org

1^st place

1^st place

6,854^th place

3,619^th place

607^th place

747^th place

135^th place

105^th place

580^th place

462^nd place

438^th place

336^th place

14^th place

14^th place

archive.today

Mattole Restoration Council: Italian Thistle (Carduus pycnocephalus) . accessed 4.8.2013

ars-grin.gov

npgsweb.ars-grin.gov

"Carduus pycnocephalus". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 2013-04-08.

berkeley.edu

ucjeps.berkeley.edu

Jepson; Hickman 1993

bsbi.org

BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.

cal-ipc.org

Bossard, CC., J.M. Randall, and M. Hoshovsky. (eds.); Invasive Plants of California’s Wildlands; University of California Press, Berkeley, CA; 2000.
Cal-IPC—California Invasive Plant Council species treatment: Carduus pycnocephalus . accessed 4.8.2013

nps.gov

U.S. National Park Service: Invasive Non-Native Plants in Sequoia and Kings Canyon National Parks — Italian Thistle

usda.gov

plants.usda.gov

USDA

web.archive.org

BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.