Definition of orthostichy in English:
noun (plural orthostichies)Botany
(In phyllotaxis) a vertical row of leaves arranged one directly above another. Contrasted with parastichy.
- Longitudinal section of shoot apex and an orthostichy of leaf primordia that are forming a rib.
- Typically, they traverse the same number of internodes between the position at which they diverge from the minor axial bundles until they enter the branch base as the number of leaf orthostichies on the shoot.
- Phyllotactic rows are easiest to identify in columnar cacti because vertically aligned leaf primordia merge together forming ribs (orthostichies).
Definition of orthostichy in:
- US English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the US
Most popular in the UK
Most popular in Canada
Most popular in Australia
Most popular in Pakistan