Science Talk Archive

Exploring the science of plants, from the field to the lab

An Inside Look at NYBG’s Time Capsule of Plants

Posted in Videos and Lectures on June 21, 2017 by Stevenson Swanson

Stevenson Swanson is the Science Media Manager for The New York Botanical Garden.


Photo of an herbarium specimenIn a new video about The New York Botanical Garden’s world-class herbarium, Assistant Curator Matthew Pace, Ph.D., likens the herbarium to a time capsule that “allows you to go basically anywhere in the world, back in time, and also extrapolate into the future.”

The 7.8 million preserved plant specimens in NYBG’s William and Lynda Steere Herbarium—the second-largest in the world—capture what the ecosystem of a region was like at a specific point in time. By knowing the environmental conditions that allow a plant species to thrive, it’s possible to make predictions about how it will react in the future.

Read More

Edit-a-thon Update: Expanding Access to Information about Important Women in Plant Science

Posted in Events on June 6, 2017 by Esther Jackson

Esther Jackson is the Public Services Librarian at NYBG’s LuEsther T. Mertz Library, where she manages Reference and Circulation services and oversees the Plant Information Office. She spends much of her time assisting researchers, providing instruction related to library resources, and collaborating with NYBG staff on various projects related to Garden initiatives and events.


Photo of editathon“Plants and People” was the theme of a Wikipedia edit-a-thon that The New York Botanical Garden’s LuEsther T. Mertz Library hosted in January. Editors and organizers focused on creating and enhancing Wikipedia articles about women in science, specifically biographical articles of female ethnobotanists, plant taxonomists, and plant collectors. For this event, the special collections of the LuEsther T. Mertz Library were used extensively, allowing for analog biographical information about important women in science to be shared with the world through Wikipedia.

This was the second edit-a-thon at NYBG during the past year, and organizers benefited from the expertise and assistance of expert Wikipedia editors from the Wikimedia NYC  chapter. Wikimedia, the foundation that supports the work of Wikipedia and its sister projects worldwide, posted a story about the event, including a video, on its blog.

Read More

Saving the Plants of the World: Celebrating International Day for Biological Diversity

Posted in Applied Science on May 22, 2017 by Lawrence Kelly

Lawrence M. Kelly, Ph.D., is Associate Vice President for Science Administration and Director of Graduate Studies at The New York Botanical Garden.


Photo of Saving the Plants of the WorldEvery year on May 22, The New York Botanical Garden joins the global community in celebrating International Day for Biological Diversity. Established in 1993 by the United Nations, this day recognizes international cooperation and commitment to take global action to reduce the rate of biodiversity loss. It is also an outstanding opportunity to increase understanding and awareness of biodiversity issues, especially, for us here at NYBG, the issues facing the plant kingdom.

It is no exaggeration to say that without plants, life on Earth would be impossible. Plants provide food, clothing, shelter, medicine, and the raw materials to meet most human needs. Plants make the air we breathe, they create the rain that waters the world, and they are essential for healthy ecosystems. The beauty of plants nurtures our souls and inspires our imaginations. Yet the plant diversity that sustains us is imperiled today as never before in human history. One-third of Earth’s nearly 400,000 plant species are at risk of extinction.

Read More

A Project as Big as the West: Wrapping Up More Than 80 Years of Intermountain Plant Research

Posted in Books: Past and Present on May 2, 2017 by Stevenson Swanson

Stevenson Swanson is the Science Media Manager for The New York Botanical Garden.


Intermountain Flora
Tony King (American, b. 1944); Bristlecone 8, 2009
[Pinus longaeva, Intermountain bristlecone pine]
Oil on linen
in Intermountain Flora, Volume Seven
For almost all of their professional careers, Drs. Noel and Patricia Holmgren have explored the vast region between the Sierra Nevada and Rocky Mountains—an area the size of Texas encompassing all or parts of seven states—to discover and document its plant life. Their work, and that of their many collaborators, is contained in Intermountain Flora, a monumental, multi-volume work published over the course of 45 years, beginning in 1972.

The New York Botanical Garden Press recently published the last volume in the series, Intermountain Flora, Volume Seven—Potpourri: Keys, History, Authors, Artists, Collectors, Beardtongues, Glossary, Indices. This 312-page supplement is both a history and a guide to the series, which provides authoritative, scientific treatments of nearly 4,000 plant species found in the Intermountain West.

Read More

Transplants: Saving the Denizens of a Threatened Coastal Ecosystem

Posted in Uncategorized on April 7, 2017 by Matt Newman

Jessica L. Allen is completing her Ph.D. at the Commodore Matthew Perry Graduate Studies Program at The New York Botanical Garden. James C. Lendemer, Ph.D., is an Assistant Curator in the Institute of Systematic Botany at The New York Botanical Garden. Lichens are their primary research interest.


Cape Hatteras, North Carolina
Wetlands and dunes in Cape Hatteras, North Carolina (Photo by Dr. James Lendemer)
Lichen transplant methods use a variety of artificial surfaces
Lichen transplant methods use a variety of artificial surfaces

In a previous post, we reported on the discovery of an overlooked biodiversity hotspot located in the vast coastal swamps of eastern North Carolina. While the area was already renowned for its wildness, we discovered that it hosts more lichen species than anywhere else in the Mid-Atlantic. Unfortunately, the factors that likely preserved the wilderness into the present day—endless low-lying swamps are difficult to drain and log—mean that it is now imperiled by rising sea levels associated with climate change. In an area where the elevation is measures in inches, minute increases in sea level mean the difference between old-growth, lichen-rich forests and marshes or open water where lichens cannot survive.

Read More

125 Years of Science and Conservation at NYBG

Posted in Book on March 16, 2017 by Stevenson Swanson

Stevenson Swanson is the Science Media Manager for The New York Botanical Garden.


BrittoniaBy their nature, scientists tend to be forward-looking sorts. As they explore their field of research, one question leads to another question, which, inevitably, leads to yet another question. But a recent issue of Brittonia, a quarterly journal of botanical research published by NYBG Press, casts a backward glance at 125 years of science and conservation at The New York Botanical Garden.

Research has played a major role at The New York Botanical Garden since its founding—by a husband-wife team of plant scientists—in 1891. As Lawrence M. Kelly, Ph.D., the editor of this special issue, writes in an introductory essay, the Botanical Garden’s scientific programs are aimed at describing, documenting, understanding, and preserving plant diversity.

Read More

Celebrating One of the World’s Greatest Plant Research Collections

Posted in Videos and Lectures on March 6, 2017 by Stevenson Swanson

Stevenson Swanson is the Science Media Manager for The New York Botanical Garden.


HerbariumIt’s been called a “national treasure” by the National Science Foundation, but The New York Botanical Garden’s William and Lynda Steere Herbarium is hardly a familiar feature of the NYBG landscape for most visitors.

In fact, if they were told that the Steere Herbarium is the second largest research collection of its kind in the world, they might well reply, “What in the World is a Herbarium?”

As it happens, that’s the name of a new NYBG exhibition that showcases the central role that the Herbarium plays in the critically important plant research that takes place behind the scenes every day at NYBG.

Read More

Look Who’s Minding Our Planet

Posted in Videos and Lectures on February 21, 2017 by Stevenson Swanson

Stevenson Swanson is the Science Media Manager for The New York Botanical Garden.


In Look Who’s Minding Our Planet, filmmaker Sara Lukinson explores the visionary partnership between philanthropist Lewis Cullman and The New York Botanical Garden, which has resulted in a world-class plant research program. The scientists in NYBG’s Lewis B. and Dorothy Cullman Program for Molecular Systematics delve into the evolution of plants, study their genetic make-up, and work to unravel their complex interrelationships.

As this compelling short documentary shows, they are also training the next generation of plant researchers, all with the goal of understanding and preserving the world’s plant life, which makes the rest of life on Earth possible.

A Catchy Phrase, But is It True?

Posted in Interesting Plant Stories on February 10, 2017 by Esther Jackson

Esther Jackson is the Public Services Librarian at The New York Botanical Garden’s LuEsther T. Mertz Library, where she manages Reference and Circulation services and oversees the Plant Information Office. Richard Abbott, Ph.D., is a botanist at the Botanical Garden, where he works primarily on updating the Manual of Vascular Plants of Northeastern United States and Adjacent Canada.


Acer pseudoplatanus Frank Vincentz
Acer pseudoplatanus by Frank Vincentz

Ontogeny recapitulates phylogeny doesn’t exactly flow off the tongue unless you are familiar with scientific terminology. However, what appears to be a somewhat intimidating phrase is actually marvelously succinct and elegant.

Ontogeny is “the development or course of development, especially of an individual organism.” This could refer to the development of a plant from embryo to seed to seedling to mature, reproductive plant. Or it could refer to an animal growing from an embryo into an infant and then into an adult. 

Phylogeny is “the evolutionary history of a genetically related group of organisms, as distinguished from the development of the individual organism.” Sometimes these relationships are illustrated as trees of information, with groups of closely related organisms called clades. Studying and depicting shared evolutionary history is known as cladistics. Have you seen Darwin’s tree of life

If so, then you understand the basic idea of phylogeny. It’s all about the study of relationships.

Recapitulate means “to repeat the principal stages or phases.” For most, this is perhaps the most recognizable word of the trio. Actually, it is the namesake of recapitulation theory.

Read More

After 248 Years, Still Fresh as a Daisy

Posted in Interesting Plant Stories on February 3, 2017 by Stevenson Swanson

Stevenson Swanson is the Science Media Manager for The New York Botanical Garden.


Capt Cook SpecimenPress. Dry. Mount.

That’s the basic process for turning a plant into a research specimen that will last indefinitely, and it’s stayed the same for hundreds of years for a good reason: It works.

As proof, here’s a member of the daisy family that botanists Joseph Banks and Daniel Solander clipped in January 1769 in Tierra del Fuego, at the southern tip of South America. They were part of the scientific team aboard the HMS Endeavour on Captain James Cook’s first voyage around the world. This 248-year-old specimen, still holding onto its leaves and retaining most of its color, is now part of the collection of 7.8 million preserved plants in NYBG’s William and Lynda Steere Herbarium, the second largest in the world.

Read More