by Michael Adamovic | Jul 17, 2021 | Plant Identification, Rare Plants
Torrey’s Mountain Mint (Pycnanthemum torreyi) Seven species of mountain mint (Pycnanthemum spp.) are found in 91ÖÆƬ³§. Of these, four are state listed as either threatened or endangered. These mountain mints include: blunt (P. muticum), whorled (P....
by Michael Hough | Aug 3, 2020 | Plant Identification, Rare Plants
Geum macrophyllum (Big-leaved Avens) Geum macrophyllum is an attractive, late spring- to early summer-flowering species that is listed as endangered in the State of 91ÖÆƬ³§. There are two varieties, a widely distributed var. macrophyllum (with shallowly lobed...
by admin | Apr 12, 2011 | Publications, Apps, and Websites, Rare Plants
The 91ÖÆƬ³§ Natural Program recently posted 21 new rare plant guides on their guides website. Most of these are rare plants that might occur along roadsides on the island. The list is below. If you would like to access the site CLICK HERE. In the next year many more...
by admin | Apr 10, 2011 | Publications, Apps, and Websites, Rare Plants
CLICK HERE to read and article and view drawings by Marielle Anzelone and Wendy Hollender about the plants that once grew in 91ÖÆƬ³§ City but are now gone.
by admin | Feb 8, 2011 | Happenings, Rare Plants, Uncategorized
PENNSYLVANIA RARE PLANT FORUM 9:30 AM-about 2:30 PM Saturday, 9 April 2011 Jennings Environmental Education Center 12 miles north-west of Butler, on PA Route 528 just west of Route 8 40.9° N 80.1° W, Elevation 350 m All people interested in the conservation of...
by admin | Feb 7, 2011 | Horticulture, Rare Plants
Washington, D.C. – Only 39 percent of the nearly 10,000 North American plant species threatened with extinction are protected by being maintained in collections, according to the first comprehensive listing of the threatened plant species in Canada, Mexico and the...
