Online botanical guides

RHS Lily Register

https://www.rhs.org.uk/plants/pdfs/plant-register-supplements/Lilies/lily-register-and-checklist.pdf

https://www.rhs.org.uk/plants/pdfs/plant-register-supplements/Lilies/LilySupp1.pdf

https://www.rhs.org.uk/plants/pdfs/plant-register-supplements/Lilies/LilySupp2.pdf

https://www.rhs.org.uk/plants/pdfs/plant-register-supplements/Lilies/lilysupp3-(1).pdf

http://www.prairielily.ca/index_htm_files/lily-register-2007-4th.pdf

https://www.rhs.org.uk/plants/pdfs/plant-register-supplements/Lilies/Fifth-Lily-Supplement.pdf

 

Lilies in the Flora of China:

http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=118558

 

Native Species of the Genus Lilium and the Closely Related Nomocharis in Yunnan, China:  

http://www.globalsciencebooks.info/Online/GSBOnline/images/2012/FOB_6(SI2)/FOB_6(SI2)28-38o.pdf

 

Lilies in the Flora of North America:

http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=118558

 

U S Dept of Agriculture, useful species distribution maps:

https://plants.usda.gov/core/profile?symbol=LILIU

 

University of California, Berkeley, Jepson Flora:

http://ucjeps.berkeley.edu/cgi-bin/get_cpn.pl?LILIU

 

Taxonomic notes on Chinese Lilium L. (Liliaceae) with proposal of three nomenclatural revisions:  

https://www.researchgate.net/publication/275643519_Taxonomic_notes_on_Chinese_Lilium_L_Liliaceae_with_proposal_of_three_nomenclatural_revisions

 

e-monocot (Lilium):  

http://www.e-monocot.org/?q=lilium 

 

Growing California Native Lilies:  

https://www.pacifichorticulture.org/articles/growing-california-native-lilies