Plums and Plums?

[neotoma]

What is the possible difference between "purple plums" and "plums"? I have a recipe that calls for both, and for the life of me I can't imagine what the difference is.

Comments

[clara-swift.livejournal.com]

There are also yellow plums... perhaps it means those? Wouldn't think it would make a difference if you use all purple though.

[neotoma.livejournal.com]

Well, if they meant yellow plums, wouldn't the recipe say so. Literally, it's just "purple plums" and "plums". Which is a wee bit confusing.