Extreme Botany: The Precarious Science of Endangered Rare Plants

You can actually buy Brighamia insignis from Logees (a specialty nursery) https://www.logees.com/cabbage-on-a-stick-plant-brighamia-in... It is grow-able as a houseplant, but you need to be careful not to overwater it.

"75 percent of cycad species are at risk of extinction (by poachers)"... and nobody blinks an eye".

Yup, the sign of the times...