There has been much written on the "egg like" extrafloral nectaries that
appear on the leaves of the various Passiflora species.

Reminds me of the people who ask if the glands on the backs of buttonwood
leaves are a disease. Then there are those who write in asking about those
mysterious little brown balls in their potting soil. Are they eggs of an
insect?. I tell them they are the eggs of the NiPhosPot. (Osmocote)

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)