Acrotonic – A type of branching in which the shoots nearest the apex of the stem show the greatest development
Zygote – The cell that results from the fusion of a male and female gamete
Xenogamy – A form of allogamy, in which the ovules of a flower are fertilised by pollen from a flower on a different plant
Witches’ broom – An abnormally dense tuft of twigs in a tree, resulting from an attach by fungi, mites or viruses
Uligiinous – Growing in swamps
Tunic – The outer, dry, papery covering of a bulb or corm, often fibrous or reticulate.