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Equisetum hiemale. Winter Horsetail. Section of a stem enlarged 30 times.
[Urformen der Kunst / Art Forms in Nature, Pl. 4]
1929 (2nd edition)
Christopher Wahren Fine Photographs
The gravures measure roughly 10.25 x 7.5 inches (26x19 cm) and are printed on sheets 12.25 x 9.5 inches (31x24 cm) with plate number printed in the lower right corner. Images illustrated in horizontal format have been rotated 90 degrees clockwise. Plate descriptions are transcribed from the American printing (E. Weythe, New York, 1929).