Alas, from the student newspaper at my alma mater University of Calgary ... from their so-called 'sexpert', inter alia:

Pliny and Dioscordes, ancient greeks in the first century, are known to have documented aphrodisiacs as substances that by nature represent "seed or semen," such as bulbs, eggs and snails.


Sadly, at a university where there is a fine department where such things could be checked, the writer appears to have preferred the Food Network (maybe) as a source ... actually, folks might be interested to see how often P and D are paired as "greeks" ...