en.wikipedia.org
en.wikipedia.org
gardenia.net
gardenia.net
shuncy.com
gardenersworld.com
BBC Gardeners World Magazine
https://www.gardenersworld.com › plants › crocus-sieberi
missouribotanicalgarden.org
Missouri Botanical Garden
https://www.missouribotanicalgarden.org › PlantFinder › PlantFinderDetails.aspx?taxonid=244094
encyclopaedia.alpinegardensociety.net
Alpine Garden Society
encyclopaedia.alpinegardensociety.net › plants › Crocus › sieberi
powo.science.kew.org
Plants of the World Online
https://powo.science.kew.org › taxon › urn:lsid:ipni.org:names:436703-1 › general-information
rhs.org.uk
fws.gov
U.S. Fish and Wildlife Service
https://www.fws.gov › species › siebers-crocus-crocus-sieberi
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