I have this from a friend in Lancashire, John Henshaw!
"Ibervillia tenuisecta is a native of the U.S.A. Norma and I collected seed from mature plants at Garfield NM last October and there are now nice little caudexes. The local name for these is "Coyote Melon". It can also be found in Texas and Arizona but it is difficult to spot when not in fruit."
