(Edited Nov 19th, 2023):
Opuntia polyacantha Haw. (Cactaceae) was previously excluded from the "Atlas of the Rare Vascular Plants of Ontario" as an unconfirmed species.
Argus, G.W., C.J. Keddy, K.M. Pryor and D.J. White. 1982-1987. Atlas of the Rare Vascular Plants of Ontario, G.W. Argus & D.J. White (eds.). National Museum of
Natural Sciences, Botany Division, Ottawa, Ont.
"Excluded species of Cactaceae / Espèces de Cactaceae exclues
J/SI - unconfirmed/situation incertaine
USI Opuntia polyacantha Haw."
https://www.biodiversitylibrary.org/item/109262#page/224/mode/1up
Growing on Nockamixon Cliff’s—could not get picture of flowering specimens without risking death, Bucks Co.
I read Aedes communis pollinates northern Platanthera (blunt-leaf), and long-tongued bees pollinate Spiranthes. Not sure what role, if any, this mosquito is playing with this Spiranthes’ (cernua, fragrant!!) reproduction, but was fun to find. (GPS off, but in PA)