The first one does not look like A. lophantha to me. Maybe A. horrida ssp. perotensis (=A. obscura in Gentry).
The next looks like A. xylonacantha.
The last is none of the ones you narrowed it down to. Looks more like A. salmiana var. ferox to me.
Last edited by agavegreg; 08-01-2010 at 10:47 PM.
Reason: spell check
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