Portuguese Stem Stitch

100 Embroidery Stitches, p 12 A-Z of Embroidery Stitches, p 124 [Portuguese Knotted Stem Stitch] Elegant Stitches, p 38 Mary Thomas's Dictionary of Embroidery Stitches, p 190 [Portuguese Knotted Stem Stitch] The Stitches of Creative Embroidery, p 69