Website references for Plant Inventory page
http://myfolia.com/plants/1089-echeveria-echeveria/varieties/4789-lola
http://www.succulents.us/echeveriachro.html
https://sites.google.com/site/succulentcity/crassulaceae-sempervivum
http://thepalmroom.wordpress.com/plant-care-discussion-forum/haworthia-attenuata-zebra-plant/
https://www.gardenlife.com/store/Crassulaceae-Echeveria-derenbergii-010315-0758.html
https://www.gardenlife.com/store/Crassulaceae-Sedum-hybrid-Burrito.html
http://plantsarethestrangestpeople.blogspot.com/2008/04/pal-haworthia-spp.html
http://haworthiaupdates.org/chapter-3-where-to-h-limifolia-3/
http://myfolia.com/plants/3466-haworthia-coarctata-haworthia-coarctata
http://wimastergardener.org/?q=Haworthia
http://www.haworthia.info/en/gallery/haworthia_ib10840.html
http://www.flowerco.com/plants/varieties.cfm?variety_id=519
http://davesgarden.com/guides/articles/view/2696/
http://davesgarden.com/guides/articles/view/1441/
http://www.thesucculentgarden.com.au/grave.html
http://www.gardenlife.com/store/Aizoaceae-Fenestraria-aurantiaca-010315-1343.html
http://www.etsy.com/listing/108960782/succulent-plant-argyroderma-living-rock?ref=related-6
http://www.denverplants.com/foliage/html/burro.htm
http://www.smgrowers.com/products/plants/plantdisplay.asp?plant_id=2099
http://www.blossomfarm.com/sempervivum.htm
http://www.bluestoneperennials.com/SEBO.html