Rosielyn (Rose) De Guzman, Botany
Curatorial Assistant, Botany, and Research Assistant, Geology

I came to the Academy as a volunteer in 2016 in the Geology Department. Now, I split my time working as a Research Assistant for Geology and a Curatorial Assistant in Botany. Some of my duties include collections care, data cleaning, digitization, loan processing, volunteer management, and assisting visiting researchers. I have a B.S. from UC Davis in Wildlife, Fish and Conservation Biology with a minor in Environmental Toxicology. Recently, I graduated from San Jose State University's Master of Library and Information Science program.

Sarah Jacobs - Assistant Curator of Botany and Howell Chair of Western North American Botany
Assistant Curator of Botany and Howell Chair of Western North American Botany

As a curator in the Botany Department at the California Academy of Sciences, Dr. Sarah Jacobs is part of a core team of scientists that collectively curates the Academy’s collection of over 2.3 million herbarium specimens. As the Howell Chair of Western North American Botany, she is particularly focused on guiding and shaping the collection of Western North American plants, ensuring their preservation, growth, and relevance into the future.

Senior Curatorial Assistant, Botany
Emily Magnaghi, Collection Manager, Botany
Collection Manager, Botany

My time in the Botany department at the Cal Academy spans my graduate and curatorial assistant work from 2005-2011 and my return in 2018 to present. I studied the taxonomy of Paleotropical Mendoncia (Acanthaceae) for my MS degree and was lucky enough to travel to Madagascar twice. Now, I manage the collection and look forward to the challenging yet fulfilling work ahead with our great team.

Dr. Heritiana Ranarivelo
Research Associate, Botany
Systematics, Biogeography, Taxonomy, Malagasy flora

My research interests focus on the taxonomy, systematics and biogeography of the Malagasy flora. I am conducting ongoing research on the St. John’s wort family, Hypericaceae, and the princess flower family, Melastomataceae, and am also investigating the relationships between Malagasy species and closely related groups from mainland Africa and the New World.

Jim Shevock, Botany Fellow
Research Associate, Fellow, Botany
Bryophytes

My ongoing research interests are on moss floristics and basic bryophyte inventory activities. My field work shifted around 1997 from flowering plants to bryophytes with an emphasis in bryogeography through specimen acquisition to expand the diversity of the collections within the CAS herbarium. Thirteen plant species have been named in my honor including seven flowering plants and six mosses including the moss genus Shevockia endemic to Asia.