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Beard Lichen

10/23/2014

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Walking in the woods and looking at trees generally involves a lot of looking up but not seeing much detail from my ground-bound viewpoint.  Sometimes, though, the detail is not "up there" but down where it comes into clear view.  The lichen on this oak trunk was right at eye level, so I was able to study and capture it on camera.  It does appear that the bark is dotted with "little gray beards".
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Black Stuff on Rocks

9/27/2014

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Picture
Someone recently asked me about some black stuff he was seeing on rocks.  I noticed this one today and did a bit of research.  I thought it worth sharing.  The following explanation comes from eHow.com:
"Crustose lichen is the only plant that will grow on a bare rock. This is accomplished by gathering small amounts of water and then in winter when the water freezes, it cracks the rock surface, providing the lichen with minerals and organic materials. Over time this process forms a tiny bit of soil on the rock. These lichen tend to lay flat on their host, looking much like paint splatters, making them hard to remove. They range in color from black, gray, brown, orange, yellow and green. About 75 percent of all lichen in the world are crustose lichen. When dating stone walls and gravestones, scientists measure the radius of this lichen growth since it grows so slowly and lives for centuries."

Read more : http://www.ehow.com/info_8463741_types-lichen-grow-rocks.html

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  • Current Info
    • PSP WeatherUnderground
    • Events in Virginia State Parks
    • Chesterfield Alumni Run 2024
    • Poca Go! race
    • Pocahontas Premiers
    • 2024 VSP Adventure Series
  • About Us
    • About the Friends.....
    • News Releases
    • Officers
    • Meetings
    • Donate / Support
  • Our Park
    • Location
    • Park History
    • Hiking Trails
    • Mountain Bike Trail Info >
      • Night Mountain Biking
      • Trail Maps
      • Trail work details
      • E-bike Policy
    • Orienteering Maps
    • CCC Cabin Preservation >
      • CCC Cabin Work Week >
        • CCC Cabin Work Week 2023
        • CCC Cabin Work Week 2022
        • CCC Cabin Work Week 2021
        • CCC Cabin Work Week 2020
        • CCC Cabin Work Week 2019
        • CCC Cabin Work Week 2018 >
          • Cabin Work Week 2018 Volunteers
      • CCC Cabin Work Week Preparation Project
      • CCC Group Cabin Stabliization Financial Contributors >
        • CCC Cabin Work Week 2018 Preservation Virginia Pitch Winner
        • Lowe's 100 Hometowns Award
      • CCC Cabin Blueprints
    • The Native Plant Garden
    • Pocahontas Park Web Site
  • Volunteering
    • Log Volunteer Hours
    • Volunteer Information
    • Volunteer Benefits
    • Meet-Up Events
  • Contact Us
  • Partners
    • Virginia Master Naturalists
    • DCR
    • IMBA
    • Paralyzed Veterans of America
    • RVA MORE
    • Virginia State Parks
    • VA Association for Parks
  • Follow Us
    • FoPSP Facebook
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    • FoPSP Meetup
    • Trail Boss Twitter
  • Join our Mailing List