At the sudden all these interesting subjects pop up but I don't have much time now. About a month ago I found several things that gave me the impression (I found it a bit difficult to understand the texts) that Venus ruled both male and female reproductive organs. I hope to have more time after a week or so to comment on this.

Apart from in his Discourse, I also found several issues in Culpeper's 'Astrological Judgement of Diseases from the Decumbiture of the Sick'. P.84 for example:"Mars rules in the body of men the gall, the Reins, the Veins, the Secrets.... and "Venus rules the womb, testicles, yard and all the instruments of generation,.." p.87. "Under Scorpio are the secrets of both sexes; it's not very fitting for me to name them;.."
http://books.google.nl/books?id=dV40F_1 ... secret&lr=

So it seems that Venus rules both male and female reproductive organs. The negative effects of Mars and Saturn mentioned in the Discourse would therefore count for men and women as well.