San Diego Natural History Museum--Your Nature ConnectionSan Diego Natural History Museum Biodiversity Research Center of the Californias: Botany Department


Plant Atlas
Climate Change
The Collection

Botanical Services

Field Guide


Jon Rebman
or Judy Gibson
fax: 619.232.0248

Jon Rebman and cactus, photo by Pamela Hartwell.
Jon Rebman explaining the finer points of Opuntia on Santa Catalina Island. Photo by Pamela Hartwell, 1997.

Reid Moran, Curator Emeritus, in herbarium inspecting Dudleyas, photo by dclark Reid Moran, Curator Emeritus, inspecting Dudleya specimens from the collection. 1997.

Departmental Staff and Associates


Jon P. Rebman, Ph.D., Curator, is a specialist in the systematics of the Cactaceae (particularly the genus Cylindropuntia), and in the floristics of southern California and the peninsula of Baja California, Mexico.

Judy Gibson, Collection Manager, is charged with the care of the collection, supervision of department volunteers, and management of the department's loans and exchanges.

Karen Rich assists with the department's special research projects, including the updating of the Checklist of the Vascular Plants of San Diego County, and development of a checklist of the flora of the peninsula of Baja California.

Jeannie Gregory, Parabotanist Manager, handles the recruiting, training, and record-keeping for Plant Atlas volunteers, and organizes the processing the specimens the Parabotanists collect from intake to labeling to expert identification to data verification.

Layla Aerne-Hains is project assistant for the Plant Atlas, helping with training, communication with Parabotanists, and acquiring collecting permits for them, as well as helping the Parabotanist Manager with processing the specimens as they come in.

Mary Alice Kessler is georeferencing the locality data for pre-Plant Atlas San Diego County specimens in the herbarium, to provide precision locations for GIS applications and to integrate the older data with the newer Plant Atlas data.

John Sanborn, Database Specialist, developed the herbarium database in its current SQL server form, developed the website for the San Diego County Plant Atlas, and works continuously to provide more features for both.

Research Associates

Dr. José Delgadillo Rodriguez
Facultad de Ciencias
Universidad Autónoma de Baja California

Dr. José Luis León de la Luz
Centro de Investigaciones Biológicas del Noroeste

Dr. Michael S. Mayer
University of San Diego

Dr. Reid Moran
Botany Curator Emeritus, deceased

Dr. Michael G. Simpson
Department of Biology
San Diego State University

Dr. Peter Vroom
Pacific Island Fisheries Science Center

Department Associates

Dr. Ken Bowles

Mary Alice Kessler

Margie Mulligan

Jim Rocks

Ms. Annette Winner

Field Associates

Mr. Larry Hendrickson

Victoria Marshall

Warren Schmidtmann