I was preparing some houseplants to return to my sun room after summering outdoors. I noticed that the passionflowers, mandavillas and thumbergia's had what looked like barnacles on their stems. They were raised, white bumps with a black "eye". These plants also had hard, brown scale on the leaves, so I thought that the "barnacles" were some other kind of scale. Does anyone know what this is??? I had another thought -- that they were some kind of insect egg attached to the stems. There was so much of it that I had to trash the plants -- last year I fought scale all winter and I am determined not to do that again, so many plants are being tossed. Thanks for any info -- I'm lost on this one. Liz