Selenicereus purpusii

References

1. [1]Desert Tropicals — http://www.desert-tropicals.com/ ↩︎The main focus of the site is succulent plants, but it also contains information on a wide range of other species. Usually at least one good photograph, plus basic information about the plant and its cultivation.
2. [2]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..
3. [3]Flora del Valle de Tehuacán-Cuicatlán — Universidad Nacional Autónoma de México · 1993 - 2015 · http://www.biodiversitylibrary.org/bibliography/118975#/summary · ISBN 968-36-3108-8 ↩︎An excellent flora (in Spanish) of the Tehuacán-Cuicatlán biosphere reserve in southeastern Mexico. It can be downloaded from the Internet
4. [4]Cacti Biology and Uses — Nobel, Park S. (Editor) · University of California Press; Berkeley, California · 2002 · ISBN 0-520-23157-0 ↩︎A lot of information about the uses and cultivation of Cacti native to central Mexico