. The Canadian field-naturalist. 1978 CODY: Vascular Plants, NWT 145 BEAUFORT SEA. YUKON TERRITORY Figure \. Map of the continental Northwest Territories showing floristic zones of Porsild and Cody (1968). Poa flexuosa. KEEW: Chesterfield, Beckett , 25 Aug. 1955 (CAN). This is an amphi-Atlantic species which is known in our area only on the basis of the collection cited above. Poa juncifolia. MACK: semi-wet meadow. Slave River Lowlands, northeastern Anne's Prairie near Hook Lake, 60°46'N, 112°44'W, Reynolds 27 (DAO). This collection represents a northward extension of the known range from


. The Canadian field-naturalist. 1978 CODY: Vascular Plants, NWT 145 BEAUFORT SEA. YUKON TERRITORY Figure \. Map of the continental Northwest Territories showing floristic zones of Porsild and Cody (1968). Poa flexuosa. KEEW: Chesterfield, Beckett , 25 Aug. 1955 (CAN). This is an amphi-Atlantic species which is known in our area only on the basis of the collection cited above. Poa juncifolia. MACK: semi-wet meadow. Slave River Lowlands, northeastern Anne's Prairie near Hook Lake, 60°46'N, 112°44'W, Reynolds 27 (DAO). This collection represents a northward extension of the known range from central Alberta. The species is new to the flora of the continental Northwest Territories and Zone 6 of Porsild and Cody (1968). Puccinellia agrostoidea. MACK: Mackenzie River Delta, northeastern shore of Richards Island, Cody & Ferguson 10162, 10199; Toker Point, Cody & Ferguson 10272; Anderson River Delta, Barry 464; Nicholson Peninsula, Parmelee 2542; Cape Parry, Parmelee 2974; Clinton Point, Parmelee 3213 (all DAO). This species was described on the basis of material from Banks Island. The range is now extended to the Arctic Coast of the District of Mackenzie. It is a non-littoral species of turfy places in tundra. Puccinellia andersonii. MACK: Mackenzie River Delta, Richards Island, Morrison July 1966 (DAO); sandy soil above ocean cliffs, Tuktoyaktuk Peninsula, 70°02'N, 129°29'W, Larsen & Owen 4242 {DAO). This is a high-arctic species known from East Greenland to Banks Island and widely disjunct to the Mackenzie Delta and Point Lay, Alaska (type locality). It is new to the flora of mainland Canada. Vahlodea atropwpurea ssp. atropurpurea. MACK: in moss among stones along lakeshore and in moist depression on esker. Lynx Lake, 62°20'N, 106°25'W, Cody 15387, 15389 (DAO); stony lakeshore, Mantic Lake, 62°18'N, 104°25'W, Cody 15474, 15475 (DAO). KEEW: gravelly lakeshore, Baralzon Lake, 60°00'N. 98°10'W, Scoggan and Baldwin 8363 (CAN). The colle


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