Spiral Ducts
| View Cart ⇗ | Info
Spiral ducts which uncoil into a single thread.
Galleries
Cellular BotanySource
Asa Gray The Elements of Botany for Beginners and for Schools (New York, Cincinnati, Chicago: American Book Co., 1887)
Downloads
233×2400, 137.0 KiB
99×1024, 24.8 KiB
62×640, 13.9 KiB
31×320, 5.7 KiB