Plant, Jessica E. E.: Phloem Loading Characteristics, Solute Concentrations, Ultrastructure, and Plasmodesmatal Frequency in Catharanthus Roseus (L.) G. Don Leaves, 1996, Box: 8. Cornell University Office of Undergraduate Biology honors theses, 53-2-4432. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/919928 Accessed August 31, 2026.