K. Groos, Der Æsthetische Genuss, p. 122. The psychology of the associations of contiguity and resemblance through which erotic symbolism operates its transference is briefly discussed by Ribot in the Psychology of the Emotions, Part 1, Chapter XII; the early chapters of the same author's Logique des Sentiments may also be said to deal with the emotional basis on which erotic symbolism arises.
A number of synonyms for the female pudenda are brought together by Schurig—cunnus, hortus, concha, navis, fovea, larva, canis, annulus, focus, cymba, antrum, delta, myrtus, etc.—and he discusses many of them. (Muliebria, Section I, cap. I.)
Kleinpaul, Sprache Ohne Worte, pp. 24-29; cf. K. Pearson, on the general and special words for sex, Chances of Death, vol. ii, pp. 112-245; a selection of the literature of the rose will be found in a volume of translations entitled Ros Rosarum.