Archive for January 2010

How Many Non-Native Species in New York Are Invasive?

January 30, 2010

These are results from the committee to assess the invasiveness of plants in New York State run by Marilyn Jordan of The Nature Conservancy on Long Island and Gerry Moore from the Brooklyn Botanic Garden.

The number of persisting non-native species in New York is 1405.
The number of persisting non-native species assessed as having a High or Very High invasive nature in New York as of January 2010 is 68.

So we can say that a minimum of ~5% of persisting non-native plant species in NYS are invasive.

Any increase in number of species assessed as invasive, or decrease in the number of non-native species thought to be persisting, would increase the calculated % invasive. It is possible (though probably less likely) that the number of non-native species assessed as invasive could decrease in the future, based on new information or interpretations of questions in the assessment form.

Marilyn J. Jordan, Ph.D.
Senior Conservation Scientist
The Nature Conservancy on Long Island


Rails to Trails And The Need for Botanical Surveys.

January 29, 2010

The link below shows the need for complete botanical surveys when old railroads are converted to trails for the public. The article is by Steve Daniel who has had experience with a trail conversion near Rochester. The article also appeared in a recent issue of the NYFA News – Steve Young

New Book: Designing Gardens with Flora of the American East

January 26, 2010

Designing Gardens with Flora of the American East
Carolyn Summers, with illustrations by Michele Hertz

Gardeners are endowed with love for a hobby that has profound potential for positive change. The beautifully-illustrated Designing Gardens with Flora of the American East approaches landscape design from an ecological perspective, encouraging professional designers and backyard enthusiasts alike to intensify their use of indigenous or native plants. These plants, ones that grow naturally in the same place in which they evolved, form the basis of the food web. Wildlife simply cannot continue to survive without them—nor can we. Summers introduces our wild flora into designs for common garden landscapes, such as foundation plantings, mixed borders, even formal knot gardens.

Emphasizing the importance of indigenous plant gardening and landscape design, Summers provides guidelines for beginning gardeners as well as experienced designers.
She highlights . . .
an in-depth scientific, coherent argument for the necessity of using indigenous plants in cultivated landscapes concrete design guidance, including actual designs, along with trees, shrubs, groundcovers, and other showy substitutes for invasive plants the best ways to use exotic plants responsibly, including controlling plant reproduction, choosing cultivars and hybrids, and more joys of “safe sex in the garden”
practical issues of finding and purchasing native plants.

From Maine to Kentucky and up and down the eastern shore, Designing Gardens with Flora of the American East lays the “gardenwork”—by preserving natural areas through the thoughtful planting of indigenous plants, we may bask in the knowledge that it is possible to have loads of fun at the same time we are growing a better world.

Rutgers University Press
224 pages * 16 color and 62 black and white photographs, 9 illustrations, and 26 tables * 6 x 9
978-0-8135-4707-7 * Paper * $23.95
978-0-8135-4706-0 * Cloth * $39.95

Winter 2010 Electronic NYFA Newsletter Sent Out Today

January 22, 2010

Remember, an electronic membership has the added advantage of delivery before paper copies are sent out and includes full color photographs. You can also simply click on web addresses instead of typing them into your browser. Convert to electronic membership the next time you renew. You will be glad you did.

The Crum Bryological Workshop for 2010 Announced

January 22, 2010

The Crum Workshop will be held this year in Tobermory, Ontario, Canada, at the very tip of the Bruce Peninsula, sticking out into Lake Huron, on September 23-28, 2010. Save the dates. There will be more information later in the year about facilities, etc. Our local representative is Jennifer Doubt (

William R. Buck
Institute of Systematic Botany
New York Botanical Garden
Bronx, NY 10458-5126, U.S.A.

phone: 718-817-8624
fax: 718-817-8648

New County-Level Maps of North American Flora Available

January 20, 2010

Yesterday afternoon, we launched our complete set of county-level maps of the North American vascular flora on our BONAP website ( We have also updated the data of our Digital North American Flora page. Although we are painfully aware of the prolonged delay in loading maps for large genera, until additional programming can be performed to ameliorate this problem, this is the best we can offer. Please let us know what you think and keep watching this site for major changes.


Dr. John Kartesz, Director
9319 Bracken Lane
Chapel Hill, NC 27516

(919) 967-6240

Homer House’s 1918 Wildflowers of NY online

January 16, 2010

This beautiful treatment of New York’s wildflowers can be found at