per foliate

perfoliate

[per-foh-lee-it, -eyt]
adjective Botany.
having the stem apparently passing through the leaf, owing to congenital union of the basal edges of the leaf round the stem.

Origin:
1540–50; < Neo-Latin perfoliātus (see per-, foliate), the feminine of which, perfoliāta, was formerly used as the name of a plant with a stalk that seemed to grow through (pierce) its leafage

perfoliation, noun
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World English Dictionary
perfoliate (pəˈfəʊlɪɪt, -ˌeɪt)
 
adj
(of a leaf) having a base that completely encloses the stem, so that the stem appears to pass through it
 
[C17: from New Latin perfoliātus, from Latin per- through + folium leaf]
 
perfoli'ation
 
n

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