Yucca periculosa

References

1. [1]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
2. [2]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.