Phytomere vs. Phytomer — What's the Difference?

(botany) A segment of the shoot of a grass; it includes the internode and leaf together with parts of the upper and lower nodes.

Phytomers are functional units of a plant, continually produced by root and shoot meristems throughout a plant's vegetative life-cycle.. Increases in a phytomer can be measured using the rate of phyllochron (rate of appearance of leaves on a shoot).

(botany) An organic element of a flowering plant; a phyton.

An organic element of a flowering plant; a phyton.