freebooter, the flower motif has always been integral to the ilonggo arts. besides weapons, these particular motif can be seen on textiles and architecture. if you notice on the majority of ilonggo weapons, the deity hilt has a flower cap. Nacho has postulated that these represented the Katmon flower (dillenia philippinensis). i have heard that the four petal supposed to represent the main cardinal points.
as far as what it's called we (as ilonggo) would call this a binangon, whether the blade profile is that of what sajen's have, or the one that i have. bangkaya has eloquently explained that in this thread:
http://www.vikingsword.com/vb/showthread.php?t=16115.
IMHO, this is what i would consider more of a tenegre: