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.
/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
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