Calamagrostis stricta subsp. groenlandica (Schrank) A . Loeve

Gillespie, Lynn J., Saarela, Jeffery M., Sokoloff, Paul C. & Bull, Roger D., 2015, New vascular plant records for the Canadian Arctic Archipelago, PhytoKeys 52, pp. 23-79 : 34-37

Calamagrostis stricta subsp. groenlandica (Schrank) A. Loeve Fig. 7

Common name.

Slim-stemmed reedgrass

Distribution.

Circumboreal-polar

Comments.

Our new collections confirm the presence of this taxon in the eastern CAA. We collected specimens from several populations in Katannilik Territorial Park on southern Baffin Island, in mesic to wet tundra habitats. The species is documented in the western CAA (Banks Island, Melville Island, Prince Patrick Island; Aiken et al. 2007, as Calamagrostis neglecta subsp. groenlandica (Schrank) Matuszk). Porsild and Cody (1980) reported the taxon (as Calamagrostis neglecta (Ehrh.) G. Gaertn., B. Mey. & Scherb.) from Devon Island, the Cumberland Peninsula of Baffin Island and Coats Island, but these records were not mapped in Aiken et al. (2007), nor could specimens be located at CAN or DAO. Associated species on Baffin Island include Agrostis mertensii Trin., Arctagrostis latifolia subsp. latifolia , Betula glandulosa , Carex rariflora , Carex membranacea , Empetrum nigrum , Eriophorum vaginatum , Huperzia selago (L.) Bernh. ex Schrank & Mart., Luzula wahlenbergii , Rhododendron tomentosum Harmaja subsp. decumbens (Aiton) Elven & D.F. Murray, Salix arctica Pall., Salix arctophila , and Vaccinium vitis-idaea .

Specimens examined.

Canada. Nunavut: Qikiqtaaluk Region, Baffin Island, Katannilik Territorial Park Reserve, Soper River valley, E bank, large sedge meadow with several small ponds ca. 12.5 km S of Mount Joy, 0.5 km S of Group/Warden Cabin #7, 63°9'35"N, 69°40'3"W, 41 m, 7 July 2012, Saarela, Gillespie, Sokoloff & Bull 2191 (ALTA, CAN-601348, MO, US); Qikiqtaaluk Region, Baffin Island, Katannilik Territorial Park Reserve, Soper River, E bank, 12 km S of Mount Joy along river, at Group/Warden Cabin #7, 63°9'44"N, 69°39'28"W, 50 m, 9 July 2012, Saarela, Gillespie, Sokoloff & Bull 2255 (ALA, CAN-601345); Qikiqtaaluk Region, Baffin Island, Katannilik Territorial Park Reserve, Soper River, 5 km S (downstream) of confluence with Livingstone River, E bank, 63°4'32"N, 69°42'11"W, 30 m, 13 July 2012, Saarela, Gillespie, Sokoloff & Bull 2398 (CAN-601347); Qikiqtaaluk Region, Baffin Island, Katannilik Territorial Park Reserve, Soper River, 18.5 km downstream (S) of its confluence with the Livingstone River, 2 km S of Emergency Cabin #8, E bank of river, 62°59'13"N, 69°42'48"W, 28 m, 14 July 2012, Saarela, Gillespie, Sokoloff & Bull 2442 (ALTA, CAN-601346); Qikiqtaaluk Region, Baffin Island, Katannilik Territorial Park Reserve, Soper Falls/Soper Lake, S side of Soper River, 62°54'6"N, 69°51'2"W, 8 m, 18 July 2012, Saarela, Gillespie, Sokoloff & Bull 2576 (CAN-601344, O).