This fully revised second edition of the plant field guidebook, was written in Tanzania by an experienced author in the field of conservation. The book is well researched and prepared to suit the demand of lecturers, students, researchers, conservationists, tour guides, tourists, horticulturalists, environmental Impact assessment (EIA) experts and natural resources consultants among others. The guidebook contains plants of different growth forms, both aquatic and terrestrial ecosystems, and therefore, it provides a good platform for considerate, understanding and conserving Tanzania's flora and hence, its sustainable utilization. Up to 387 plant species from 81 families have been identified and represented by coloured photographs, also furnished by glossaries of botanical terms, illustrations of leaf types, shapes, phyllotaxy, types of inflorescence and fruits. Some of the plants included in this field guidebook are rare, endemic, threatened and invasive lien species. Knowing these species, therefore, helps in augmenting management efforts to conservation authorities, individual users and other stakeholders. Etymology and eponyms are the key concepts intended to help readers in understand in a simple, fascinating and instructive way, plants' scientific names presented in this field guidebook, which basically have their roots from the Latin and Greek languages. The guidebook is well organized with valuable contents, which surely enlightens readers' understanding in plant science. The author of this field guidebook is an experienced lecturer, researcher and consultant in a variety of fields, in particular, disaster risk management, environment, climate change and nature conservation.