. The Canadian field-naturalist. 252 The Canadian Field-Naturalist Vol. 94. Figure 1. A typical halophyte habitat resulting from the use of de-icing salt. Spergularia marina, Airiplex patula var. hasiala, Puccinellia distans, and Agropyron repens dominate this portion of the Queensway between Pinecrest Road and Woodroffe Avenue in Ottawa, Regional Municipality of Ottawa-Carleton. seeds with obvious wings mm wide were found. The Ottawa collections are similar to those from Toronto. Some plants of both S. marina and S. media in southern Ontario are perennial; this has been supported by o
. The Canadian field-naturalist. 252 The Canadian Field-Naturalist Vol. 94. Figure 1. A typical halophyte habitat resulting from the use of de-icing salt. Spergularia marina, Airiplex patula var. hasiala, Puccinellia distans, and Agropyron repens dominate this portion of the Queensway between Pinecrest Road and Woodroffe Avenue in Ottawa, Regional Municipality of Ottawa-Carleton. seeds with obvious wings mm wide were found. The Ottawa collections are similar to those from Toronto. Some plants of both S. marina and S. media in southern Ontario are perennial; this has been supported by observation of plants in the field which survived the winter of 1975-76. Spergularia media Growing in open alkaline soil with Na 2200 to 5500 ;ug/g and pH to , about temporary pools in the median of the Queen Elizabeth Way at several points between Jordan and Grimsby, Regional Municipality of Niagara, 43°12'N, 79°34'W, 14 September 1975, P. M. Catling & K. L. Mcin- tosh (CAN, DAO, OAC, TRT); median of Queen Elizabeth Way at Winona, Saltfleet Township, Wentworth County, 10 September 1976, P. M. Catling & K. L. Mcintosh (CAN, DAO, TRT); open ditch receiving salty run-off from high- way at Gulf Center on Ontario Highway 401, mi [ km] E of exit 16 (Highway 76) to West Lome. Aldboro ugh Town- ship, Elgin County, 15 August 1977, P. M. Catling (DAO, TRT, U WO); open saline median of Ontario Highway 401 near Highway 59, 2 mi [ km] S of Woodstock, East Oxford Township, Oxford County, 17 September 1977, P. M. Calling (DAO, TRT); in alkaline median of Ontario Highway 401, 2 mi [ km] E of Ontario Highway 100 to London, WestminsterTownship, Middlesex County, 13 July 1979, P. M. Catling (TRT). This sand-spurrey was pre- viously known in the east only from central and coastal New York State (Rossbach 1940), where it is considered to have been introduced (Fernald and Wiegand 1910). It is recently adventive along a highway in Illinois (Mohlenbrock and Evans 1974), an
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