| One of the botanists on the forum can correct me if I'm wrong here but I believe that all plants have sap of some kind, essentially fluid that runs through the plant. Now whether is it salled "sap" in all instances, or if it is even called "sap" by the botanists at all. That would be interesting to know.
With my orchids I don't see it on everything. I usually see it on cattleyas and my phals and rarely on anything else, very occasionally on a paph or cymbidium bud.
Early on I even tasted it once....probably not a good idea (actually that might explain some things, lol) and it was like sticky super-sweet syrup.
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