It is a standard, tubular, 5-lobed P. flower, with spur,
but the coloration is white with a narrow, deep purple
border around the perimeter of the petals. At each of the
5 notches where the petals fuse the purple border widens into
a larger splotch.
The flower throat is yellowish-green.
Is this a normal variation for _P. agnata_?
-- Rick