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Part sterile, part fertile pinnule. Young leaves showing how air canals, as delimited by the septae, elongate basipitally (i.e., from the apex toward the base). Shoot apex with young leaves. Note youngest leaf sheathed by the transparent wing of the next
| Copyright © 2010 by Robbin Moran
(contact: kcn2[at]cornell.edu)
[ref. DOL38322]
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