Rolla Milton Tryon Jr. (August 26, 1916 – August 20, 2001) was an American

botanist Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ...

who specialized in the systematics and evolution of ferns and other spore-dispersed plants ( pteridology). His particular focus and interest lay in two areas, historical

biogeography Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, ...

of ferns and the taxonomy of tropical American ferns.

Biography

Rolla Milton Tryon Jr. was born August 26, 1916 in Chicago. His father was an American history and education professor at the University of Chicago. Tryon's first scientific paper was published in 1934 (at the age of 18) on the ferns in Chesterton, Indiana where his family’s summer cottage was located. In 1935, he received his A.A. degree and in 1937 his B.S., both from the University of Chicago. He enrolled in the University of Wisconsin for a Ph.M., graduating in 1938. Then, at

Harvard Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher le ...

, earning he earned both his M.S. in 1940 and Ph.D. in 1941 working with Merritt Lyndon Fernald and

Charles Alfred Weatherby Charles Alfred Weatherby (1875–1949) was an American botanist. Weatherby was born in Hartford, Connecticut, to Charles Nathaniel Weatherby and his wife, the former Grace Weld. Not long after Charles Alfred's birth, the family moved to Colorado ...

on ferns in the genera ''

Pteridium Bracken (''Pteridium'') is a genus of large, coarse ferns in the family Dennstaedtiaceae. Ferns (Pteridophyta) are vascular plants that have alternating generations, large plants that produce spores and small plants that produce sex cells (eggs ...

'' and ''

Doryopteris ''Doryopteris'' is a genus of ferns in the subfamily Cheilanthoideae of the family Pteridaceae. Species The circumscription Circumscription may refer to: *Circumscribed circle * Circumscription (logic) *Circumscription (taxonomy) *Circumscrip ...

''. During World War II, he worked as a lab technician in the U.S. Chemical Warfare Service at the Massachusetts Institute of Technology. After the war, he returned to teach at Dartmouth College. then at the University of Wisconsin, where he met his future wife and lifelong collaborator, Alice Faber, a student at the time. In 1947, Tryon joined the faculty at Washington University in St. Louis as an Associate Professor of Botany and became assistant curator in the herbarium of the Missouri Botanical Garden. Tryon left Missouri in 1957 to travel with Alice to Peru to study the fern flora of the American tropics. When they returned, Tryon served as a research associate at the University of California Herbarium at

Berkeley Berkeley most often refers to: *Berkeley, California, a city in the United States **University of California, Berkeley, a public university in Berkeley, California * George Berkeley (1685–1753), Anglo-Irish philosopher Berkeley may also refer ...

. In 1958, Tryon returned to Harvard as Curator of Ferns at the

Gray Herbarium The Harvard University Herbaria and Botanical Museum are institutions located on the grounds of Harvard University at 22 Divinity Avenue, Cambridge, Massachusetts. The Botanical Museum is one of three which comprise the Harvard Museum of Natural ...

where he remained with his wife until 1987. In 1972, he became a professor of biology at Harvard. The two Tryons wrote a complete survey of ferns, ''Ferns and Allied Plants: with Special Reference to Tropical America,'' with emphasis on

tropical America The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ...

, which was published in 1982. Tryon was a member of the

American Fern Society The American Fern Society was founded in 1893. Today, it has more than 1,000 members around the world, with various local chapters. Among its deceased members, perhaps the most famous is Oliver Sacks, who became a member in 1993. Willard N. Clut ...

for 69 years, starting in 1932, and held various roles in the society including curator and librarian of the library and herbarium from 1946 to 1957; president from 1974-1975; he was made an honorary member in 1978. At the New England Botanical Club, he was recording secretary from 1964-1968, associate editor of the Society’s Journal Rhodora from 1961-1977, editor-in-chief from 1977-1981, vice-president from 1984-1986 and president from 1986-1988. In 1984, he received a Merit Award from the

Botanical Society of America The Botanical Society of America (BSA) represents professional and amateur botanists, researchers, educators and students in over 80 countries of the world. It functions as a United States nonprofit 501(c)(3) membership society. History The soci ...

. Following his Harvard retirement, he became an adjunct professor at the University of South Florida in

Tampa Tampa () is a city on the Gulf Coast of the U.S. state of Florida. The city's borders include the north shore of Tampa Bay and the east shore of Old Tampa Bay. Tampa is the largest city in the Tampa Bay area and the seat of Hillsborough County ...

. He died August 20, 2001.

Footnotes

{{DEFAULTSORT:Tryon, Rolla M. Jr. American botanists Missouri Botanical Garden people 1916 births 2001 deaths Harvard University alumni Pteridologists University of Chicago alumni University of Wisconsin–Madison alumni Harvard University faculty Washington University in St. Louis faculty 20th-century American botanists American botanical writers University of California, Berkeley staff