The flat rock surfaces off Birches Run is the only site recorded. This small evergreen fern grows luxuriantly over flat rocks and in cracks on cliff faces. Oblong leathery leaves are cut into narrow, blunt-tipped leaflets. This fern is usually less than 20cm. A tall smooth trunk with light green to gray bark terminates with a rounded crown of branches.
Alternate leaves are ovate or circular, have a pointed tip and are round at the base.
They are dark green but paler underneath and are finely toothed. Trembling Aspen may reach heights up to 25m. Burnovers on McLean Lake Trail, Games Trail and Chaulk's Run Pin Cherry is an determined colonizer of disturbed areas. It is quite beautiful in full bloom. Finely toothed alternate leaves are ovate and elongated with a pointed tip.