“Diagram to show path of stored food upward through the tracheal tubes, and through the phloem portion of the bark, and showing how this passage is not prevented by girdling.” -Stevens, 1916
William Chase Stevens Plant Anatomy (Philadelphia, PA: P. Blakiston, 1916)
1236×2400, 380.0 KiB
527×1024, 66.3 KiB
329×640, 37.3 KiB
164×320, 15.2 KiB