If you are still wondering about those stroke-able leaves and did not check out the "comment" section where Dan Benarcik, horticulturist/plantsman extraordinaire at Chanticleer garden in Wayne, PA, solved the mystery, those leaves belong to (drum roll please.............) Veratrum viride!
Totally strokeable leaves, but will most likely make you vomit (or worse!) Check out this abstract from the FDA 's Poisonous Plant Database:
AUTHOR(S): Crummett, D.; Bronstein, D.; Weaver, Z. III
TITLE: Accidental Veratrum viride poisoning in three "ramp" foragers.
YEAR: 1985 CITATION: N C Med J, 46(9), 469-471 [English]
FDA #: F05735
ABSTRACT: Conclusion and Summary: As with all foraged foods, ramps must be carefully identified, preferably by an experienced person, prior to ingestion. Identification will be aided by the strong odor of leeks. Mistaken ingestion of Veratrum viride can have serious conmplications including first and second degree atrioventricular block, significant hypotension, respiratory depression and even death. With "ramps" gaining increasing popularity, western North Carolina physicians should be suspicious of accidental Veratrum viride poisoning in patients appearing toxic after the ingestion of "ramps". GRIN #: 41142
STANDARD COMMON NAME: American hellebore
LATIN NAME: Veratrum viride
STANDARD PLANT NAME: Veratrum viride Aiton
Don't think I'll nibble on this!
Some more links:
http://www.delawarewildflowers.org/bucktoe.php (scroll down to see another image)