mc menemin made it up
Palatable plants are species that are suitable for consumption by animals, often due to their taste, smell, and nutritional value. These plants are attractive and appetizing to livestock and wildlife, and are typically used as forage or food sources in ecosystems. Examples include grasses, legumes, and certain types of shrubs and trees.
Its difficult to say what this could be. It could be your lymph node is swollen and feels like it is palable but Im really not sure. One thing for certain however is that you should see your Doctor ASAP. Any lumps found should always be investigated.