Answer:
three rows of stitches
Explanation:
This 1920's black dress with ribbon embroidery (1984.29.1) owned by Ruth Herndon features a " three rows of stitches" hemline
This can easily be observed in the picture of that particular dress.
Also, it can be observed that there are five leaves of several shades of green ribbon around the center rose. This was followed by three rows of stitches in a warp pattern that appears in a narrow blue ombre ribbon.
