. The Canadian field-naturalist. Figure 1. The Sutton Ridges, a series of Precambrian outcrops penetrating the Paleozoic wetlands characteristic of the Hudson Bay Lowland. This Aquatuk Lake 'cuesta' has an elevation ca. 275 m asl. (CAN, DAO, TRT) nor with any mention made of it in liis northern Ontario fieldnotes (CAN). It is not included by Scoggan (1978) in the flora of Ontario. The specimens collected (CAN, TRT) are typically awned, with the narrow leaves of var. borealis. It is also known from a third Ontario location (55°N, 84°43'W: abandoned Mid-Canada Line radar station 510, occupying a
. The Canadian field-naturalist. Figure 1. The Sutton Ridges, a series of Precambrian outcrops penetrating the Paleozoic wetlands characteristic of the Hudson Bay Lowland. This Aquatuk Lake 'cuesta' has an elevation ca. 275 m asl. (CAN, DAO, TRT) nor with any mention made of it in liis northern Ontario fieldnotes (CAN). It is not included by Scoggan (1978) in the flora of Ontario. The specimens collected (CAN, TRT) are typically awned, with the narrow leaves of var. borealis. It is also known from a third Ontario location (55°N, 84°43'W: abandoned Mid-Canada Line radar station 510, occupying a small inlier of Precambrian diabase- gabbro rock; Sims 2462A, 10 August 1978 (SSMF, Xerox TRT)) (Figure 2). Carex bigelowii (Riley 9536, 9460) (Figure 2) is an amphi-Atlantic member of an arctic circumpolar species complex (refer map, Hulten 1964), charac- teristic of dry tundra and rocky habitats. Although also mapped by Porsild (1964) from the northeastern Hudson Bay Lowland, Scoggan (1978) reports it absent from the Ontario flora. Again, no reference is made to it in Porsild's fieldnotes from northern Ontario (CAN), nor is it represented in majorOntario herbaria (CAN, DAO, TRT). The Birch Hill (CAN, TRT) and Aquatuk Lake (TRT) specimens are typical; collections from outcrop near the Hudson Bay coast (55°04'N, 84°50'W; Riley 9666. 31 July. Figure 2. Ontario distribution of Luzula confusa, Carex bigelowii, Agrostis borealis, and Minuartia groen- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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