This book is composed of articles I devised and organized, with original research, mainly in botany, conducted along decades in Brazil. Some of the manuscripts which became chapters herein had been formatted as articles according to the targeted journals. I have not attempted to unify their formats in this book. I did not perfect nor further edit non-essential details inherent to the journals. The proof of the pudding is in the eating [as opposed to the wrapping]. Modifications of format were done only to adapt the content to electronic publication form (e-pub). The chapters (separate projects or article manuscripts) are in no specific order. Collaborators, regardless of the volume of their contributions, appear as co-authors of the individual chapters, or are otherwise acknowledged in the text.