Sabal minor is usually a small palm with a subterranean trunk; however, one can find individuals with larger features and well-developed aerial stems. In Louisiana, these individuals were recognized as separate species (J. K. Small 1929; M. L. Bomhard 1935), but more recently they have been treated as merely ecological variants of a single widespread species (A. Henderson et al. 1995; P. F. Ramp and L. B. Thien 1995; S. Zona 1990). Large emergent forms of S. minor were even thought by B. J. Simpson (1988) to be hybrids of that species with S. palmetto, but his claim is undocumented and unsubstantiated.

http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200027117

My advice is to accept the above, presumably competent interpretation, offer your material as the tall growing ecological variant. Instead of trying to assign an apparently unwarranted botanical designation to it, continuing thereby to choose a path of unneeded difficulty.

i suppose i will as i'm tired of beating a dead horse so to speak. thank you.