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philadelphiabotanicalclub

The Philadelphia Botanical Club is dedicated to increasing knowledge and appreciation of the botany of the Philadelphia region & beyond.

Join us in person or on Zoom Thursday, May 22 at 6

Join us in person or on Zoom Thursday, May 22 at 6:15 p.m. Dr. Marion Holmes will speak on “Parasites in pastures: successional dynamics of non-photosynthetic plants in post-agricultural forests.”
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Dr. Holmes @spatheandspadix writes: "Much of our understanding of how forest plant communities develop after disturbance comes from photosynthetic species and focuses on the roles of seed dispersal and environmental conditions in recolonization. Non-photosynthetic plants that parasitize fungi or other plant species raise a variety of additional questions. How do plants return to previously cleared forests when they directly depend on other species for survival? This talk will explore the successional dynamics of parasitic plants and their relationships with the trees and fungi that serve as hosts."
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We will meet at the Pennsylvania Horticultural Society, 100 North 20th St, Philadelphia. Our meeting is in the PHS McLean Library on the ground floor, which is wheelchair accessible.

6:00 p.m. Doors of the library open
6:15 p.m. The meeting begins.
6:30 p.m. The invited presentation begins.
7:30 p.m. The meeting ends, and the McLean Library closes.

7:30 p.m. For those who would like to join us and our speaker for our after-meeting dinner, we will dine at Thanal Indian Tavern (1939 Arch St.) at the corner of 20th and Arch Streets, directly across the street from our meeting.

On the day before the meeting, we will email the Zoom link. Non-members who wish to log in to the meeting should contact us at philbotclub at gmail.com during the week before the meeting. Our meetings are free and open to the public.

Who was Mary Gibson Henry? In part, a self-taught

Who was Mary Gibson Henry? In part, a self-taught field botanist who made over 200 expeditions, contributed around 7,000 specimens to the herbarium of the Academy of Natural Sciences, and developed hundreds of hybrids at her garden in Gladwyne. (And a past president of the Philadelphia Botanical Club!)

For more, please join us on Zoom or in person on Thursday, April 24th at 6:15 p.m. Our guest speaker is Scott Beadenkopf. He will speak on “Giving life to the Mary Gibson Henry Herbarium Collection: native flora of the SE United States and beyond."

We will meet at the Pennsylvania Horticultural Society, 100 North 20th St, Philadelphia (the northwest corner of Arch and 20th Streets). Our meeting is in the PHS McLean Library on the ground floor, which is wheelchair accessible.

6:00 p.m. Doors of the library open
6:15 p.m. The meeting begins.
6:30 p.m. The invited presentation begins.
7:30 p.m. The meeting ends, and the McLean Library closes.

7:30 p.m. For those who would like to join us and our speaker for our after-meeting dinner, we will dine at Thanal Indian Tavern (1939 Arch St.) at the corner of 20th and Arch Streets, directly across the street from our meeting.

On the day before the meeting, we will email the Zoom link. Non-members who wish to log in to the meeting should contact us at philbotclub at gmail.com during the week before the meeting. Our meetings are free and open to the public!

Pease join us on Zoom or in person on Thursday, Ap

Pease join us on Zoom or in person on Thursday, April 24th at 6:15 p.m. Our guest speaker is Scott Beadenkopf. He will speak on “Giving life to the Mary Gibson Henry Herbarium Collection: native flora of the SE United States and beyond."

Scott will highlight the significance of Mary Gibson Henry’s botanical legacy and walk us through the detailed process of locating, digitizing, transcribing, and georeferencing the specimens. He will demonstrate how these digitized specimens can be accessed online—searchable by species, location, date, or expedition.

We will meet at the Pennsylvania Horticultural Society, 100 North 20th St, Philadelphia (the northwest corner of Arch and 20th Streets). Our meeting is in the PHS McLean Library on the ground floor, which is wheelchair accessible.

6:00 p.m. Doors of the library open
6:15 p.m. The meeting begins.
6:30 p.m. The invited presentation begins.
7:30 p.m. The meeting ends, and the McLean Library closes.

7:30 p.m. For those who would like to join us and our speaker for our after-meeting dinner, we will dine at Thanal Indian Tavern (1939 Arch St.) at the corner of 20th and Arch Streets, directly across the street from our meeting.

On the day before the meeting, we will email the Zoom link. Non-members who wish to log in to the meeting should contact us at philbotclub at gmail.com during the week before the meeting. Our meetings are free and open to the public.

Today! The Philadelphia Botanical Club's guest spe

Today! The Philadelphia Botanical Club's guest speaker for our Thursday, March 27th meeting is Jack Levy-Diedrich. He will speak on “Plant biodiversity and invasion in urban forests of the East Coast.” Jack is a 4th-year doctoral student in the Department of Plant and Soil Sciences at the University of Delaware.

Join us in person at PHS (100 N 20th St) or online via Zoom at 6:15 tonight. Our meetings are free and open to everyone. Our meeting is in the PHS McLean Library on the ground floor, which is wheelchair accessible.

6:00 p.m. Doors of the library open
6:15 p.m. The meeting starts.
6:30 p.m. Presentation begins
7:30 p.m. The meeting ends, and the McLean Library closes.
7:30 p.m. For those who would like to join us and our speaker for dinner, we will dine at Thanal Indian Tavern (1939 Arch St) at the corner of 20th and Arch Streets, directly across the street from our meeting.

Please join us on Zoom or in person on Thursday, M

Please join us on Zoom or in person on Thursday, March 27th at 6:15 p.m. Our guest speaker will be Jack Levy-Diedrich. Jack is a 4th-year doctoral student in Tara Trammell's lab in the Department of Plant and Soil Sciences at the University of Delaware. He will speak on “Plant Biodiversity and Invasion in Urban Forests of the East Coast.”

We will meet at the Pennsylvania Horticultural Society, 100 North 20th St, Philadelphia. Our meeting is in the PHS McLean Library on the ground floor, which is wheelchair accessible.

6:00 p.m. Doors of the library open
6:15 p.m. The meeting begins.
6:30 p.m. Jack's presentation begins.
7:30 p.m. The meeting ends, and the McLean Library closes.

7:30 p.m. For those who would like to join us and our speaker for our after-meeting dinner, we will dine at Thanal Indian Tavern (1939 Arch St.) at the corner of 20th and Arch Streets, directly across the street from our meeting.

On the day before the meeting, we will email the Zoom link. Non-members who wish to log in to the meeting should contact us at philbotclub@gmail.com during the week before the meeting. Our meetings are free and open to the public.

The February meeting of the Philadelphia Botanical

The February meeting of the Philadelphia Botanical Club will be held on Zoom Thursday, February 27 at 6:15 p.m. We will not meet in person.

Our guest speaker, Alina Freire-Fierro, will join us from Ecuador to speak on "The Good, the Bad and the Ugly of Naming Plants: a Latin American Perspective.”

Dr. Freire-Fierro's presentation will explore plant names and the process for naming them. It will also examine the current conflict between nomenclatural stability and socio-political ideologies.

All club members receive the Zoom link the day of the meeting. Not a member? You're still welcome to attend! Email philbotclub at gmail.com prior to the 27th to receive a Zoom invitation.

Join the Philadelphia Botanical Club in person or

Join the Philadelphia Botanical Club in person or on Zoom Thursday, January 23 at 6:15 p.m. for our monthly meeting. Chris LeClair of @tufieldstation @templeambler will speak on "Examining early plant community response to a novel tornado disturbance.”

Chris writes: "On September 1, 2021, Hurricane Ida spawned a tornado that struck Ambler, Pa. with winds of 130 mph. It ravaged the mature eastern deciduous forest that had been under study on the campus of Temple University Ambler. To assess the tornado’s early impact on the forest, Chris measured floral community composition across developmental stages (adult, seedling, and seed); tree canopy as measured with LIDAR; and environmental conditions. Chris’s presentation will describe tornado-induced shifts in abundance and composition of plant species––and how these findings can inform forest management."

We will meet at the Pennsylvania Horticultural Society, 100 North 20th St, Philadelphia. Our meeting is in the PHS McLean Library on the ground floor, which is wheelchair accessible.

6:00 p.m. Doors of the library open
6:15 p.m. The meeting begins.
6:30 p.m. Chris’s presentation begins.
7:30 p.m. The meeting ends, and the McLean Library closes.

7:30 p.m. For those who would like to join us and our speaker for our after-meeting dinner, we will dine at Thanal Indian Tavern (1939 Arch St.) at the corner of 20th and Arch Streets, directly across the street from our meeting.

On the day before the meeting, we will email the Zoom link. Non-members who wish to log in to the meeting should contact us at philbotclub at gmail.com during the week before the meeting. Our meetings are free and open to the public.

"The fringed orchids in genus Platanthera are amon

"The fringed orchids in genus Platanthera are among the most diverse and well-known groups of terrestrial orchids in the eastern US, but many have experienced decline, and are considered threatened both regionally and globally. Hybridization and complex patterns of morphological variation within and among species often complicates accurate field identification, and species definitions remain debated. We combined genomics, morphology, and mycorrhizal fungus associations to shed light on why different fringed orchids grow where they do and when they form hybrids." - Dr. McCormick

Intrigued? We are too! Join the Philadelphia Botanical Club this Thursday in person or via Zoom at 6:15pm to hear more.
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We will meet at the Pennsylvania Horticultural Society, 100 North 20th St, Philadelphia (the northwest corner of Arch and 20th Streets). Our meeting is in the PHS McLean Library on the ground floor, which is wheelchair accessible.

6:00 p.m. Doors of the library open
6:15 p.m. The meeting begins.
6:30 p.m. Dr. McCormick’s presentation begins.
7:30 p.m. The meeting ends, and the McLean Library closes.

7:30 p.m. For those who would like to join us and our speaker for our after-meeting dinner, we will dine at Thanal Indian Tavern (1939 Arch St.) at the corner

On the day before the meeting, we will email the Zoom link. Non-members who wish to log in to the meeting should contact us at philbotclub at gmail.com during the week before the meeting. Our meetings are free and open to the public.

Join us in person or on Zoom Thursday, December 19

Join us in person or on Zoom Thursday, December 19, at 6:15 p.m. Melissa McCormick will speak on “North American Fringed Orchids (Platanthera), a Tale of Hybridization and Mycorrhizal Fungi.”

Dr. McCormick is Principal Investigator and Senior Scientist at the Smithsonian Environmental Research Center, Edgewater, Maryland. @smithsonianenvironment

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We will meet at the Pennsylvania Horticultural Society, 100 North 20th St, Philadelphia (the northwest corner of Arch and 20th Streets). Our meeting is in the PHS McLean Library on the ground floor, which is wheelchair accessible.

6:00 p.m. Doors of the library open
6:15 p.m. The meeting begins.
6:30 p.m. Dr. McCormick’s presentation begins.
7:30 p.m. The meeting ends, and the McLean Library closes.

7:30 p.m. For those who would like to join us and our speaker for our after-meeting dinner, we will dine at Thanal Indian Tavern (1939 Arch St.), directly across the street from our meeting.

On the day before the meeting, we will email the Zoom link. Non-members who wish to log in to the meeting should contact us at philbotclub at gmail.com during the week before the meeting.

Our meetings are free and open to the public. We can't wait to see you for the last meeting of 2024!

Join us in person or on Zoom Thursday, November 21

Join us in person or on Zoom Thursday, November 21 at 6:15 p.m. Dennis Waters @lichens4u will speak on, “Using DNA Sequencing to Untangle the Taxonomy of Lichens.”

Dennis writes:
"Despite two centuries of lichenology in the Mid-Atlantic region, there remain many unresolved questions. Several years of recent fieldwork in Hunterdon County, New Jersey, have turned up taxonomic problems that can’t be answered with the traditional methods of lichenology. A member grant from the Philadelphia Botanical Club has allowed some of these problems to be addressed using modern molecular techniques. This talk will look at several examples of these problems and how DNA sequencing goes where other methods don’t."

The club meets at the Pennsylvania Horticultural Society, 100 North 20th St, Philadelphia (the northwest corner of Arch and 20th Streets). Our meeting is in the PHS McLean Library on the ground floor, which is wheelchair accessible.

6:00 p.m. Doors of the library open
6:15 p.m. The meeting starts.
6:30 p.m. Dennis’s presentation begins
7:30 p.m. The meeting ends, and the McLean Library closes.

7:30 p.m. For those who would like to join us and our speaker for dinner, we will dine at Thanal Indian Tavern (1939 Arch St.) at the corner of 20th and Arch Streets, directly across the street from our meeting.

On the day before the meeting, we will email the Zoom link. Non-members who wish to log in to the meeting should contact us at philbotclub at gmail.com during the week before the meeting. Our meetings are free and open to the public.

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