The relevant Wikipedia article, http://en.wikipedia.org/wiki/Pink_triangle (http://en.wikipedia.org/wiki/Pink_triangle), has the lines:
The pink triangle (German: Rosa Winkel) was one of the Nazi concentration camp badges, used by the Nazis to identify male prisoners in concentration camps who were sent there because of their homosexuality...There hasn't been any evidence for the persecution of lesbians under the "black triangle".

I suggest you correct the article.