Calcareous Ledge Maidenhair Spleenwort

Calcareous Ledge Maidenhair Spleenwort

Page 1 of 3 Plant Indicator Species for Calcareous Ledge The plants described below can often be used as field indicators for identifying this habitat when other physical and biological features of the habitat are present. ebony spleenwort (Asplenium platyneuron) (fern) • frond narrow, typically 4 - 12 in long, with dark reddish-brown to blackish stem • each pinna oblong, with small “thumb” at base 2004 Janet Novak maidenhair spleenwort (Asplenium trichomanes) (fern) • frond narrow, up to 10 in long, with dark purplish- brown stem • each pinna small and roundish-oblong © Thomas G. Barnes wild columbine (Aquilegia canadensis) (forb) • leaves compound, each with three round-toothed leaflets • flowers bright red, drooping, bell-like, each with five long straight or slightly curved spurs (April – July) Clarence A. Rechenthin@ USDA-NCE PLANTS Database Page 2 of 3 Plant Indicator Species for Calcareous Ledge Richard A. Howard Image Collection bladdernut (Staphylea trifolia) Courtesy Smithsonian Institution (shrub) • leaves opposite, three-parted, toothed • flowers bell-shaped, white, in (usually) drooping clusters (April) • fruit three-lobed, thin-husked, inflated capsules, 1 - 2 in diameter (August – October) ©Elaine Haug WVU Herbarium, hackberry (Celtis occidentalis) Courtesy Smithsonian Institution (tree) • leaves ovate, long-pointed, toothed, asymmetrical at base • twigs with chambered pith, especially near leaf scars • bark of mature trees with warty knobs and ridges Page 3 of 3 Plant Indicator Species for Calcareous Ledge American prickly-ash (Zanthoxylum americanum) (shrub) • leaves compound, resembling those of true ashes • leaves with lemony odor when crushed • stem, branches, twigs, and sometimes leaf stalks spiny; spines paired on twigs Photo coPyright Henrietta Kress http://www.henriettesherbal.com basswood (Tilia americana) (tree) • leaves broad, heart-shaped, toothed, asymmetrical at base • leaf buds smooth, red, shiny Herman D.E., et al. USDA-NRCS PLANTS Database • small round nutlets clustered on stems beneath narrow leaf-like bracts (August – October) Paul Redfearn, Ozarks Regional Herbarium Missouri State University .

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