Dot, I think that's what she means, anthers that are fully opened and pollen fluffy.
By the way Mona, I have used pollen from partially opened anthers that the pollen wasn't what I would call fluffy and the pollen was still good. When I have a lot of daylilies to clean for James I rush through the pollen dabbing sometimes and use it that way.
Also, another tip is you do not have to wait for the sticky stuff (stigmatic fluid) to be on the stigma (tip of the pistil) for you to pollenate. I had to look these words up because I just generally call it the pistil and don't use the other words. Sort of like I don't generally say filament when referring to the stalk of the stamen, I just call it the stamen. And I say sticky stuff
Anyway, a lot of people say to wait until the sticky stuff is there before dabbing pollen on it but not all daylilies will produce the stickyness at the same time. Sometimes it could be a lot later in the day before it's there and other times it there way before any pollen is open. I read that some flowers will do this, not have pollen and sticky stuff going on at the same time, to keep from self pollenating. I usually just go out first thing, unless it cool and the anthers aren't open yet, and pollenate and then pollen will be there when the daylily decides to produce the fluid. Sometimes it doesn't take but then again sometimes it doesn't take even if the fluid is there.