parastichy

[pi-ras-ti-kee]

pa·ras·ti·chy

[pi-ras-ti-kee]
noun, plural pa·ras·ti·chies. Botany.
one of a number of seemingly secondary spirals or oblique ranks winding around the stem or axis to the right and left in a spiral arrangement of leaves, scales, etc., where the internodes are short and the members closely crowded, as in the houseleek and the pine cone.

Origin:
1870–75; para-1 + stich1 + -y3
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Parastichy is always a great word to know.
So is antheridia. Does it mean:
group of mostly aquatic eukaryotic organisms which conduct photosynthesis and make their own food
male reproductive structure which produces gametes in ferns, mosses, fungi and algae
Collins
World English Dictionary
parastichy (pəˈræstɪkɪ)
 
n , pl -chies
1.  a hypothetical spiral line connecting the bases of a series of leaves on a stem
2.  an arrangement of leaves so connected
 
[C19: from para-1 + Greek stikhia, from stikhos row, rank]
 
pa'rastichous
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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