James E. Low said:PARAGUAYENSE, [Shepherd, 1912], NE Mex., n=68, (flowers whitish, + red markings). Its species name hints that it came from Paraguay: only later did it become clear that it is not from that country, but from Mexico, instead. No plants have been rediscovered in the wild since the first one appeared on a cactus root imported in 1904 by a NY wholesale dealer in succulent plants (F.Weinberg), so exact habitat is unknown, even in year 2000. Read p. 48 of CSSA Journ. of March, 1986. The plants have leaf rosettes much like some Echeveria, but the stems are much too long. Culture so easy it is almost weed-like, and it can even freeze and live. It is perhaps the most widely grown species of this genus. It is a popular species for making hybrids. The ssp. bernalense was found in 1979 by Alfred Lau on the Cerro Bernal mountain range of Tamaulipas state in NE Mexico, so this may be near home of G. paraguayense also. Another possible variation, ssp. mendozae, was found much more recently.