This Guide presents 200 plants that can easily be found in the southwestern region, where Nature Park of Southwest Alentejo and Costa Vicentina is. Each sheet contains a picture and a text, which helps the reader in the identification of the species and provides some facts about each plant. Was thought to accompany naturalists or curious, that during the their tours want to better understand their surroundings. At a time when we become aware of the importance of landscapes and natural diversity, this book aims to arouse the interest to the fantastic world of plants.