I'm glad you say so, as I was trying to remember a tennis player's name today. I finally did after brain digging (no good) and word and letter association while sipping coffee.
I used to know maybe 2000 latin plant names while recognizing them, the leaves et al, and now.. I still can do it sometimes but some I have to drag stuff up from some sort of brain lake. This is easily from lack of usage as I don't work with plants anymore on a daily basis, but also - I know there is some erasure going on. Or so I think.
Phone numbers -
New York, 1950 - KI 60622 (Kingsbridge)
Evanston, 1951 - UN 6o527 (oh, wait? maybe it was 60927) (University)
Los Angeles - now I get into wanting not to say, but also forgetting. I'll leave it at that. I remember lots between then and now, but then I don't want to post those.