@Calif_Sue : I have indeed added most of the images in my Plant List to the Plant DB.
I would have little reason to upload a photo to my List unless I thought it might be a worthwhile addition to those that already exist in the DB. I do not link the plants in my List to the entries in the DB because I would thereby lose control of how the plant is named in my List, which I find intolerable. For instance, I just added the plant "Allium fistulosum" to my list, and clicked on one of the proposed DB entries. The plant was entered in my list under the name "Scallion ...", not the name I know it by. This is something I simply cannot have. And I do not feel my ability to check out the contents of the DB is at all impeded.
I did not realize that personal Lists were populated with random photos from the DB if the entry was linked to one of the proposed DB items, so ... nevermind, all.