Lemna minor, Common duckweed
We saw this water plant when we visited the Diomedes Botanic Garden outside Athens in October 2017
There were many interesting plants but not many flowers because of the time of the year
This, apparently, is one of the plants we are going to eat on Mars when we get there
Lemna is mentioned in THE MEDITERRANEAN GARDEN number 8, Spring 1997 in
THE AQUATICS AND THEIR CULTIVATION IN MEDITERRANEAN CLIMATES
By Gianluca Corazza