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parastichy

[pi-ras-ti-kee] /pɪˈræs tɪ ki/
noun, plural parastichies. Botany
1.
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
1870-1875
1870-75; para-1 + stich1 + -y3
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for parastichy's

parastichy

/pəˈræstɪkɪ/
noun (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
Compare orthostichy
Derived Forms
parastichous, adjective
Word Origin
C19: from para-1 + Greek stikhia, from stikhos row, rank
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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