Hello.

There are several species of harmala around the world. One of them the grows in Texas, New Mexico, and mexican states next to. It has a more succulent and grey-blueish leaves than harmala, perhaps has some goodies in their seeds, like harmala or better, who knows...

Pics i have found over there:

http://www.worldbotanica...ganum_-mexicanum-791.jpg
http://www.worldbotanica...ganum_-mexicanum-790.jpg
http://lh6.ggpht.com/-hg...hBj9fjSmo4/DSC02071.JPG
http://lh4.ggpht.com/-ZD...MFX0VxR5HE/DSC05857.JPG

Range of distribution in Texas:

http://arcmapper.sc.egov...=PEME&countyname=yes

More precise information where it grows:
http://files.shroomery.o...52/033593610-peganum.jpg

I am so interested in reports of someone who knows it, or whatever, because there are a little information about it.
I think that some "naturalized" harmalas reported in USA, perhaps are a mistook mexicanum for harmala.