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Additions and Range Extensions to the Vascular Plant Flora of the Continental Northwest Territories and Nunavut, Canada III

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Additions and Range Extensions to the Vascular Plant Flora of the Continental Northwest Territories and Nunavut, Canada III Additions and Range Extensions to the Vascular Plant Flora of the Continental Northwest Territories and Nunavut, Canada III WILLIAM J. CODY1 and KENNETH L. READING2 1Biological Resources Program, Biodiversity, National Program on Environmental Health, Agriculture and Agri-Food Canada, Wm. Saunders Building (49), Central Experimental Farm, Ottawa, Ontario K1A 0C6, Canada 211 Colborne Street, Thornhill, Ontario L3T 1Z4, Canada Cody, William J,. and Kenneth L. Reading. 2005. Additions and range extensions to the vascular plant flora of the continental Northwest Territories and Nunavut, Canada III. Canadian Field-Naturalist 119(2): 276-290. Fifteen native taxa are reported as new to either District of Keewatin (now Nunavut in part) or District of Mackenzie (Nunavut contains the northeastern portion): Aster puniceus, Astragalus eucosmus, Astragalus eucosmus f. albinus, Carex media, Epilobium latifolium f. albiflorum, Eriophorum viridi-carinatum, Erysiumum pallasii, Moneses uniflora, Najas flexilis, Potamogeton obtu- sifolius, Salix arctica × glauca, Salix glauca ssp. callicarpae, Salix myrtillifolia, Salix rotundifolia, Shepherdia canadensis, taxa are new to Northwest Territories overall. Significant range extensions for 157 native taxa are included. Key Words: Vascular plants, Mackenzie, Keewatin, Nunavut, flora, new records, range extensions, phytogeography. Since the publication of Additions and Range Exten- Eriophorum viridi-carinatum sions to the Vascular Plant Flora of the Continental Erysimum pallasii Northwest Territories and Nunavut, Canada II (Cody Moneses uniflora et al. 2003) a large number of specimens collected by Salix glauca ssp. callicarpaea Kenneth L. Reading in the Continental Northwest Ter- Salix myrtillifolia Shepherdia canadensis ritories between the years of 1978 and 1995 were dis- covered and forwarded to the senior author for exami- New Taxa to the Continental Northwest Territories nation. Many of these proved to be significant records (Mackenzie): (5) and are reported here along with some additional speci- Aster puniceus mens collected by D. Bush, D. Campbell, B. Cornish, V. Potamogeton obtusifolius J. Kajima, L. Kershaw, J. B. Korol, J. Lancaster, J. V. Mat- Najas flexilis thews, J. W. Thieret, R. J. Reich, and J. Thompson. Salix arctica X glauca Salix rotundifolia All of these specimens are preserved in the Agricul- ture and Agri-Food Canada Herbarium (DAO). As in Range Extensions of Native Taxa in the Continental Cody et al (2003) the authors have continued to use Northwest Territories (Keewatin): (48) the historic names “District of Keewatin” and “District Anemone parviflora of Mackenzie” to follow the format of Porsild and Cody Anemone richardsonii (1980) Vascular Plants of Continental Northwest Terri- Antennaria isolepis tories and subsequent publications. However, continen- Caltha natans Campanula uniflora tal “Keewatin” and the former northeastern portion of Cardamine bellidifolia “District of Mackenzie” are now part of the recently Cardamine pratensis defined Continental Nunavut Territory. Carex canescens As in paper II a synopsis of the taxa addressed in Carex rariflora the body of this paper follows with species listed in Carex rotundata alphabetical order within categories. The taxa are then Carex scirpoidea discussed in an annotated list by family in the same Cystopteris fragilis order as presented in the Flora of the Continental North- Draba fladnizensis west Territories (Cody and Porsild 1980) together with Draba nivalis citation of specimens and other pertinent information. Draba wahlenbergii Dryopteris fragrans Epilobium davuricum New Taxa to the Continental Northwest Equisetum palustre Territories Status Festuca brachyphylla New Taxa to the Continental Northwest Territories Galium trifidum (Keewatin): (10) Juncus arcticus Astragalus eucosmus Juncus castaneus ssp. castaneus Astragalus eucosmus f. albinus Ledum groenlandicum Carex media Minuartia biflora Epilobium latifolium f. albiflorum Minuartia rossii 276 2005 CODY AND READING:VASCULAR FLORA OF NWT AND NUNAVUT 277 Minuartia rubella Elymus trachycaulus ssp. violaceus Polygonum viviparum Epilobium palustre Potentilla nivea ssp. nivea Equisetum palustre Potentilla palustris Erigeron uniflorus ssp. eriocephalus Pyrola secunda Eriophorum angustifolium Ranunculus sabinei Eriophorum callitrix Ranunculus × spitzbergensis Eriophorum triste Rubus arcticus ssp. acaulis Eriophorum vaginatum Rubus idaeus Erysimum pallasii Sagina caespitosa Eutrema edwardsii Salix arctophila Festuca richardsonii Salix fuscescens Gentiana affinis Salix planifolia Hedysarum alpinum Salix reticulata Hedysarum boreale ssp. mackenzii Salix richardsonii Hierochloe hirta ssp. arctica Saxifraga nelsoniana ssp. porsildiana Juncus arcticus Saxifraga rivularis Juncus castaneus ssp. castaneus Scirpus caespitosus ssp. austriacus Juncus stygius ssp. americanus Silene walensis Juncus triglumis ssp. albescens Stellaria calycantha Juniperus communis Stellaria longipes Lagotis glauca Tofieldea coccinea Limosella aquatica Tofieldia pusilla Linnaea borealis var. americana Lupinus arcticus Range Extensions of Native Taxa in the Continental Luzula wahlenbergii Northwest Territories (Mackenzie): (109) Lycopodium selago Alisma triviale Lycopus uniflorus Anemone parviflora Matricaria ambigua Arctostaphylos alpina Minuartia yukonensis Arnica angustifolia ssp. attenuata Muhlenbergia glomerata Arnica chamissonis Myriophyllum alterniflorum Artemisia furcata Nymphaea tetragona ssp. leibergii Artemisia tilesii Oxytropis arctobia Aster pygmaeus Oxytropis deflexa ssp. foliosa Aster sibiricus Oxytropis maydelliana Astragalus australis Papaver radicatum Braya glabella Parrya arctica Braya humilis Pedicularis capitata Calamagrostis lapponica Pedicularis langsdorfii ssp. arctica Calamagrostis purpurascens Pedicularis lapponica Calamagrostis stricta ssp. stricta Pedicularis macrodonta Callitriche hermaphroditica Phragmites australis Caltha palustris var. arctica Poa alpina Cardamine bellidifolia Poa glauca Carex bebbii Poa pratensis ssp. alpigena Carex nardina Potamogeton filiformis Carex scirpoidea Potamogeton foliosus Carex subspathacea Potentilla biflora Carex supina ssp. spaniocarpa Ranunculus aquatilis var. eradicatus Carex vaginata Rosa blanda Cerastium alpinum Rhynchospora alba Cerastium beeringianum Salix alaxensis Chenopodium dessicatum Salix arctica Chrysosplenium tetrandrum Salix glauca var. acutifolia Crepis nana Salix planifolia Cryptogramma crispa var. acrostichoides Salix reticulata Cystopteris fragilis Salix richardsonii Cystopteris montana Salix sphenophylla Danthonia spicata Saxifraga nivalis Descurainia sophioides Scirpus rollandii Draba juvenalis Senecio congestus Draba wahlenbergii Silene walensis Dryopteris fragrans Solidago graminifolia var. major Elymus canadensis Sparganium hyperboreum Elymus macrourus Spartina gracilis 278 THE CANADIAN FIELD-NATURALIST Vol. 119 Stellaria longipes localities west of the west end of Great Slave Lake. The Triglochin maritimum specimen cited above is an extension of the range to the east Trisetum spicatum of Great Slave Lake of about 390 kilometers. Vaccinium vitis-idaea minus var. Dryopteris fragrans (L.) Schott, Fragrant Cliff Fern – Woodsia ilvensis MACKENZIE: Hope Bay Area, northeast of Bathurst Annotated List Inlet, Roberts Lake, 68°10'30"N 106°33'00"W, K. Read- ing 231, 11 Aug. 1987 (DAO); KEEWATIN: south south- LYCOPODIACEAE west of Bissett Lake, 63°44'00"N 95°30'00"W, K. Read- Lycopodium selago L., Mountain Club-moss – ing 336, 28 Aug. 1982 (DAO). MACKENZIE: Hope Bay Area, northeast of Bathurst This is a widespread species in Canada. The first specimen Inlet, Windy Lake, 68°03'15"N 106°37'00"W, K. cited above is an extension of the known range of about 180 Reading 152, 14 July 1987 (DAO). kilometers north northwest from the Arctic Circle and the The specimen cited above is an extension of the known second specimen is from a site between two sites south of range in the Territory of about 175 kilometers north of a site the Arctic Circle (Porsild and Cody 1980). adjacent to the Arctic Circle (Porsild and Cody 1980). Woodsia ilvensis (L.) R.Br., Rusty Woodsia – MAC- EQUISETACEAE KENZIE: 63°00'00"N 109°55'00" W, K. Reading 425,8 Equisetum palustre L., Marsh Horsetail – MACKENZIE: Aug. 1995 (DAO); outcrop beside bog, 62°59'00"N muddy tundra pond margin, Coppermine River Area, 109°51'00"W, K. Reading 428, 9 Aug. 1995 (DAO); 67°31'15"N 116°01'00"W, K. Reading 8, 31 Aug. 2002 Hope Bay area, northeast of Bathurst Inlet, Roberts (DAO); rocky fen pools, Coppermine River Area, Lake, 68°10'30"N 116°33'00"W, K. Reading 213,11 67°33'30"N 116°14'54"W, K. Reading 47, 21 Aug. 2002 Aug. 1987 (DAO). (DAO); muddy flooded rock polygon, Coppermine River The first two specimens cited above are an extension of the Area, 67°34'00"N 116°17'00"W, K. Reading 9, 1 Sept. known range in the Territory (Porsild and Cody 1980) of about 170 kilometers northeast of a site near the east end of 2002 (DAO); Hope Bay Area, northeast of Bathurst Great Slave Lake. The second specimen is a northward Inlet, Windy Lake, 68°03'15"N 106°37'00"W. K. Read- extension of about 75 kilometers from a site reported by Cody ing 204, 16 July 1987 (DAO); KEEWATIN: SY Area, et al. (1984). 62°12'20"N 97°52'00"W, K. Reading 121, 17 Aug. 1984 (DAO). CUPRESSACEAE Juniperus communis ACKENZIE The first four specimens cited above extend the known L. s.l., Ground Juniper – M : dolomite scarp, Coppermine River Area, 67°09 00 N range of this species about 500 kilometers northeast of the east ' " 115°45 00 W, K. Reading 83, 28 Aug. end
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