• Meetings begin at 6:15 PM.

  • For meetings held by Zoom, instructions for joining the meeting will be emailed to members on the day of the meeting.
  • Non-members can request that information by emailing philbotclub@gmail.com by 10 PM the day before the meeting.

If you have an idea for a future program, please contact the Program Committee chair, Rebekah Armstrong, rebekah.armstrong@gmail.com. A list of previous meetings is available.

  • Using DNA Sequencing to Untangle the Taxonomy of Lichens

    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.

    Dennis P Waters is a scientist, author, and retired internet entrepreneur who has been studying the lichen flora of the mid-Atlantic region for fifteen years.

    Location: Pennsylvania Horticultural Society McLean Library, 100 North 20th Street, Philadelphia