Our Intelligent Companions, the Plants - Contains much information on various mind/plant type experiments throughout history. Some people mentioned include Cleve Backster and J. Chandra Bose.
Happy Plants - Deals with Cleve Backster's experiments and other mind/plant experiments, including ones backing up Backster.
Chapter Six- Cleve Backster's Laboratory - A chapter in a web-based book by psychologist Ingo Swann. Deals with a trip made by Swann to Backster's laboratory and chronicles the first-hand experiment he witnessed.
Subtle Energy - An article in a web-based magazine by Paul von Ward Lightworks. Deals with Cleve Backster's mind-plant discoveries and the author's speculations about them.
Sacrifice for Science - Contains some information on Cleve Backster's experiments and the author's interpretations of the implications.
Vignettes From the History of Plant Morphology - Articles about people, mostly Agnes Arber, who created unconventional theories about plant morphology.
The Pine Tree is the Highest Form of Life - An about.com article discussing galvanometer experiments with pine trees, similar to the work of Cleve Backster.
Plant Articles by Judith Handelsman - A series of articles from various magazines. The second one has relevance primary perception discoveries, as it describes Handelsman's own experiences with the phenomenon.
