New Rare Plant Finds in NY State Parks During 2010

From Kim Smith – NY Natural Heritage State Parks Botanist

This was an exciting year for botanical discoveries in New York state parks. Everyone heard about the federally-threatened Isotria medeoloides (small whorled pogonia) that turned up in Orange County in May. But there were eight more new state-rare plant populations documented in state parks this year.

Five of these species were found on Long Island, which was a focus area for the NYNHP state parks surveyed this year.  Three of the species found are listed as state-endangered; these are Juncus brachycarpus (short-fruit rush, S1) at Montauk Point State Park, Bartonia paniculata ssp. paniculata (twining screwstem, S1) at Connetquot River State Park, and Polygonum aviculare ssp. buxiforme (Small’s knotweed, S1) at Hither Hills State Park. The discovery of another population of short-fruit rush is particularly exciting, as there is only one other extant population known in the state. The other two species found on Long Island are Eupatorium torreyanum (Torrey’s thoroughwort, S2) and Desmodium ciliare (hairy small-leaved tick-trefoil, S2S3), both found at Shadmoor State Park and listed as state-threatened.

Back up north, during additional surveys for Isotria medeoloides, a new population of the state-endangered Endodeca serpentaria (Virginia snakeroot, S2) was discovered at Highland Lakes State Park. At Taconic State Park, Symphyotrichum boreale (boreal aster, S2, threatened) was discovered, and at Chenango Valley State Park, a new population of Botrychium oneidense (blunt-lobe grape-fern, S2S3, endangered) was found.

All of these discoveries point to the need for continued survey efforts for rare plants throughout New York. It’s a big state and we still have a lot to learn!

Boreal aster in Taconic State Park 2010

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