“Diagram showing the relation of the water-carrying tissues of the leaves to those of the stem, and how the older rings of growth give up their water to the newer before this water can enter the leaves. The figures at the bottom indicate in years the age of the rings.” -Stevens, 1916
William Chase Stevens Plant Anatomy (Philadelphia, PA: P. Blakiston, 1916)
656×2400, 297.4 KiB
279×1024, 53.4 KiB
174×640, 28.9 KiB
87×320, 10.8 KiB