Borzicactus sepium

References

1. [1]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
2. [2]The Cactaceae — Britton N.L. & Rose J.N. · The Carnegie Institution of Washington; Washington. · 1920 · http://www.biodiversitylibrary.org ↩︎An immense work in 4 volumes. Many of the botanical names are out of date, of course, but the book contains a wealth of information about the plants. It can be downloaded from the Internet.
3. [3]Taxonomic revision of the Opuntia humifusa complex (Opuntieae: Cactaceae) of the eastern United States — Majure L.C., Judd W.S., Soltis P.S. & Soltis D.E. · 2017 · https://doi.org/10.11646/phytotaxa.290.1.1 · ISBN 1179-3155 ↩︎
4. [4]IUCN Red List of Threatened Species — http://www.iucnredlist.org/ ↩︎A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
5. [5]Dictionary of Economic Plants. — Uphof. J. C. Th. · Weinheim · 1959 · ISBN - ↩︎An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
6. [6]Food Plants in the Americas: A Survey of the Domesticated, Cultivated, and Wild Plants Used for Human Food in North, — Kermath B.M.; Bennett B.C.' Pulsipher L.M. · 2014 ↩︎A pre-publication draft of an amazing, on-going work first started in 1985. It contains information on more than 3,900 taxa from the Americas - from Arctic regions to the Tropics
7. [7]The Cactus Family — Anderson E.F. · Timber Press; Portland, Oregon · 2001 · ISBN 0-88192-498-9 ↩︎An excellent work, giving botanical descriptions of virtually all the cacti, together with their range (but not their habitats) and sometimes also a photo. it also contains a long chapter detailing the many uses of cacti and another on cultivation..
8. [8]Enciclopedia de las Plantas Útiles del Ecuador — de la Torre, L., Navarrete H., P. Muriel M., Macía M.J. & Ba · Herbario QCA de la Escuela de Ciencias Biológicas de la Pontific · 2008 · ISBN 978-9978-77-135-8 ↩︎