Of the two plants, Dictyosperma and Lepidozamia, which has been farmed to extinction in its native climates
Lepidozamia:  They are native to rainforest climates in eastern Queensland and eastern New South Wales. Dictyosperma:  The sole species, Dictyosperma album, is widely cultivated in the tropics but has been farmed to near extinction in its native habitat.
Dictyosperma