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M.J. Oldham & M. Delisle-Oldham 8243; specimen record, replicates at MICH 1199372, DAO, TRTE, UWO, NHIC# 02848 (home), +1; identified as Carex disticha by M.J. Oldham, !PM Catling 1989; extensive colony in open, disturbed meadow; also to herbaria of W Botham, das, ctb, wjc; from known ON colony (see Catling et al. 1988 Can. J. Bot. 66 : 2323-2330).

Or another related taxon, a disjunct or possibly even an undescribed endemic to the great lakes according to Johnson (2016; i.e., "included is an uncommon small early-blooming variation (or separate species?) that is widely scattered at open bedrock barren sites (sometimes moist), including alvars. This begins to bloom in early to mid June, much earlier than any other Epilobium. The author feels that the possibility that this is E. leptocarpum or an unrecognized Great Lakes endemic species similar to it, has not been excluded. It is now generally subsumed under E.ciliatum. Krotkov claimed to have found E. leptocarpum at two locations, but the habitat was different from that stated above.
Average (5 years) first flowering of tiny unrecognized early “alvar” Epilobium June 12, earliest May 29 (northwards).

Observation made on a semi-disturbed wet alvar/marsh inclusion within a white cedar/pine conifer forest.

Likely the same taxon as these observations:
https://www.inaturalist.org/observations/164998830
https://www.inaturalist.org/observations/70813947
https://www.inaturalist.org/observations/121679331
https://www.inaturalist.org/observations/165088930
https://www.inaturalist.org/observations/92792973
https://www.inaturalist.org/observations/81515913
https://www.inaturalist.org/observations/71611109
https://www.inaturalist.org/observations/28734529
https://www.inaturalist.org/observations/28734498

Same location as this observation: https://www.inaturalist.org/observations/166670752

@wdvanhem