These books are available at Harman library. The websites contain only brief summaries
of all the topics.
Biology of plants
By Raven, Evert and Heichhorn. W.H.Freeman & co. 7'th or less edition.
This book is excellent for plant anatomy.
Website accompanying the text book "Biology of plants" by Raven et al.
Search it by chapters or by categories, offering Quizzes, animations & Illustrations: http://bcs.whfreeman.com/raven7e/
Plant Physiology
By Lincoln Taiz and Eduardo Zeiger 3'rd or 4'th ed.
This book is better for photosynthesis study. http://4e.plantphys.net/