Bud, to a botanist, is a term that refers to the reproductive structure of a plant. Gemma, which has five letters, is a small, reproductive structure found in some plants, such as liverworts and mosses. FLORA, also with five letters, is a term used to describe the collective species of plants in a particular region or time period. Lastly, PAL, with three letters, is a term used to describe a plant that is self-pollinating.