Share This Profile
Share this profile on Facebook.
Link to this profile on LinkedIn.
Tweet this profile on Twitter.
Email a link to this profile.
See other services through which you can share this profile.
This profile was last updated on 1/9/14  and contains information from public web pages and contributions from the ZoomInfo community.

Dr. Dennis E. Desjardin

Wrong Dr. Dennis E. Desjardin?

Biology Professor

San Francisco State University
1600 Holloway Avenue Cesar Chavez Student Center M-100D
San Francisco , California 94132
United States

Company Description: Founded in 1899, San Francisco State University is one of the nation's most highly diverse, public, urban universities. Offering more than 200 undergraduate and...   more

Employment History

Board Memberships and Affiliations


  • Master's degree , Ecology and Systematic Biology
    San Francisco State University
127 Total References
Web References
Its discovery in the forests of ..., 9 Jan 2014 [cached]
Its discovery in the forests of Borneo, says San Francisco State University researcher Dennis Desjardin, suggests that even some of the most charismatic characters in the fungal kingdom are yet to be identified. Shaped like a sea sponge, S. squarepantsii was found in 2010 in the Lambir Hills in Sarawak, Malaysia. It is bright orange-although it can turn purple when sprinkled with a strong chemical base-and smells "vaguely fruity or strongly musty," according to Desjardin and colleagues' description published in the journal Mycologia.
"We expect that it has a wider range than these two areas," said Desjardin, a professor in ecology and evolution in the SFSU Biology Department. "But perhaps we haven't seen it in more places because we haven't collected it yet in some of the underexplored forests of the region."
Desjardin said Spongiforma are related to a group of mushrooms that includes the tasty porcini. But the genus sports an unusual look that is far from the expected cap and stem style.
"It's just like a sponge with these big hollow holes," he explained. "When it's wet and moist and fresh, you can wring water out of it and it will spring back to its original size. Most mushrooms don't do that."
Spongiforma's ancestors had a cap and stem, but these characters have been lost over time -- a common occurrence in fungi, Desjardin noted. The cap and stem design is an elegant evolutionary solution to a fungal problem. The stem lifts the fungus' reproductive spores off the ground so that they can be dispersed more easily by wind and passing animals, while the cap protects the spores from drying out in their lofty but exposed position. In its humid home, Spongiforma has taken a different approach to keeping its spores wet. "It's become gelatinous or rubbery," Desjardin said.
Spongiforma squarepantsii spores -- photos by Dennis Desjardin
"Most of these are very cryptic, molds and little things, most of them are not mushrooms," Desjardin said.
But even mushrooms-which are sort of like the big game of the fungal world-are mostly unknown. "We go to underexplored forests around the world, and we spend months at a time collecting all the mushrooms and focusing on various groups," Desjardin said. "And when we do that type of work, on average, anywhere from 25 percent to 30 percent of the species are new to science."
Desjardin and his colleague Don Hemmes of the University of Hawaii at Hilo will describe five new white-spored species of mushrooms from the native mountain forests of Hawaii in an upcoming issue of Mycologia.
Desjardin and his colleagues are racing to discover and study the islands' fungi before native forests succumb to agriculture and grazing.
"We don't know what's there, and that keeps us from truly understanding how these habitats function," Desjardin said.
lightning-firelies: Eternal Light ..., 29 Oct 2013 [cached]
lightning-firelies: Eternal Light Mushrooms Credit: Cassius V. Stevani (Instituto de Química - Univ. de São Paulo, Brazil) This luminescent fungi was collected in São Paulo, Brazil. San Francisco State University biology professor Dennis Desjardin and his colleagues who made the discovery, named the new species Mycena luxaeterna (eternal light) after a movement in Mozart's "Requiem."
San Francisco State University biology professor Dennis Desjardin and his colleagues who made the discovery, named the new species Mycena luxaeterna (eternal light) after a movement in Mozart's "Requiem."
About the MSSF, 13 Mar 2006 [cached]
Our Scientific Advisor is Dr. Dennis Desjardin, Professor of Mycology at San Francisco State University and the curator of the Thiers Herbarium.
Dennis ..., 22 Nov 2012 [cached]
Dennis Desjardin Dennis Desjardin received a Master's degree in Ecology and Systematic Biology from San Francisco State University under the tutelage of Dr. Harry D. Thiers, and a PhD in Botany from the University of Tennessee studying with Dr. Ronald H. Petersen.
Dr. Desjardin specializes in the systematics and ecology of mushroom-forming Basidiomycetes. He currently has active projects in Thailand, Malaysia, Indonesia, Micronesia (Pohnpei & Kosrae), the Hawaiian Islands, Brazil (Amazonia & São Paulo), the west African islands of São Tome and Principe, and California. He has published 115 refereed scientific papers and 3 books, in which he has described 225 new species and 5 new genera. His achievements were recognized by the Mycological Society of America (MSA) with the Alexopoulos Award and the William H. Weston Award for Teaching Excellence, both in 1998, and was made a Fellow of the MSA in 2005. He is a Fellow of the California Academy of Sciences and the Scientific Advisor for the Mycological Society of San Francisco.
SOMA - Speakers and Mushroom Topics, 18 May 2006 [cached]
Dr. Dennis Desjardin not only told us the reasons why he is a mycologist, but why YOU should be one too!He had new species and new genera that he showed such as a coralloid jelly fungus, a sponge-like bolete without a stipe and mushrooms that fruit under water and even under ice!He has recorded six new species of bioluminescent mushrooms and all of them were collected from the same habitat in the Atlantic Forest area of Brazil.So why are mushrooms bioluminescent? (To attract insects at night!) He also had an invitation to explore the wonders of the spring fungi of the high Sierra Nevada this June 5-10, 2005.
Dennis studied with Dr. Harry Thiers at San Francisco State University from 1981-1985 (B.S.-1983, M.A.-1985), then studied with Dr. Ron Petersen at the University of Tennessee from 1985-1989 (Ph.D.-1989).
For the past 15 years Dennis has been at San Francisco State University, where he is currently a Professor of Biology and Director of the H.D. Thiers Herbarium.He has been a member of the Mycological Society of San Francisco for nearly 25 years and its Scientific Advisor for the past 14 years. As one of the top Mycologists in North America, he has published over 75 papers on mushroom taxonomy in refereed-scientific journals, and received over $1.6 million from the National Science Foundation to support his research.He currently has nine graduate students, 4 at SFSU and 5 in Asia where he supervises their doctoral research at Chiang Mai University, Ramkhamhaeng University and King Monkut's Institute of Technology in Thailand, and at the University of Malaya in Kuala Lumpur.Dr. Desjardin has published over 140 new species and 3 new genera.His list of accolades include the Alexopoulos Award for scholarly work and the Weston Award for teaching excellence from the Mycological Society of America.He currently spends most of his "research time" in southeast Asia. (4/21/05)
Other People with the name "Desjardin":
Other ZoomInfo Searches
Accelerate your business with the industry's most comprehensive profiles on business people and companies.
Find business contacts by city, industry and title. Our B2B directory has just-verified and in-depth profiles, plus the market's top tools for searching, targeting and tracking.
Atlanta | Boston | Chicago | Houston | Los Angeles | New York
Browse ZoomInfo's business people directory. Our professional profiles include verified contact information, biography, work history, affiliations and more.
Browse ZoomInfo's company directory. Our company profiles include corporate background information, detailed descriptions, and links to comprehensive employee profiles with verified contact information.