orthostichy

 [awr-thos-ti-kee]  

or·thos·ti·chy

   [awr-thos-ti-kee]
noun, plural or·thos·ti·chies. Botany.
1.
a vertical rank or row.
2.
an arrangement of members, as leaves, at different heights on an axis so that their median planes coincide.
Origin:
1870–75; ortho- + Greek -stichia alignment, equivalent to stích(os) row (see stich1) + -ia -y3

Related forms
or·thos·ti·chous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Orthostichy is always a great word to know.
So is archegonia. Does it mean:
female reproductive organ which produces eggs in bryophytes, ferns and most gymnosperms
phase in plant life which begins with a spore produced by meiosis
LEARN MORE UNUSUAL WORDS WITH WORD DYNAMO...
Collins
World English Dictionary
orthostichy (ɔːˈθɒstɪkɪ)
 
—n , pl -chies
1.  an imaginary vertical line that connects a row of leaves on a stem
2.  an arrangement of leaves so connected
 
[C19: from ortho- + Greek stikhos line]
 
or'thostichous
 
—adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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