Most references seem to say that the clitoris does not have a double subalbugineal layer that allows for a true erection, however Vincent Di Marino and Hubert Lepidi published a recent (2014) study that included histological microscope photos that suggest that, like the penis, the clitoris tunica is also double-layered.  

 Are their findings generally accepted or rejected by the medical community? Most cities from 2015 still say the clitoris lacks a second layer, though Marino and Lepidi claim to have found it in their work. The picture is in this document: 

 https://books.google.com/books?id=wKMpBAAAQBAJ&pg;=PA58&lpg;=PA58&dq;=%22tunica%22+clitoris+%22venous+plexus%22&source;=bl&ots;=TIHQ4434AI&sig;=H1LM3l6Xt2yaC7yPpRjkW7xHoCc&hl;=en&sa;=X&ved;=0CDQQ6AEwBWoVChMIn8Gq2vHJxwIVwSuICh3Itg0R#v=onepage&q;=%22tunica%22%20clitoris%20%22venous%20plexus%22&f;=false