Hi Virginia,
FYI, none of those links would work for me.
See the same Cuphea micropetala illustration here,
http://www.ogrod.uw.edu.pl/flo...
It was illegitimately titled "Cuphea eminens (C. Jorullensis)."
This is a different illustration of C. micropetala that was also published in 1861. You will notice that it is also illegitimately cited as being Cuphea jorullensis.
http://www.ogrod.uw.edu.pl/flo...
Under the list of "Name synonims" it says, "Cuphea jorullensis Hook. [Illegitimate]."
Cuphea jorullensis is a legitimate species, but it isn't the one depicted in the illustration. If you see a modern photograph it is fairly obvious.
http://www.phytoimages.siu.edu...
Since I grow it, I know the illustration is spot on for Cuphea micropetala.
Taxonomy is far from static and corrections are constantly being made.