. The Canadian field-naturalist. 1996 Brownell, Blaney and Catling: Southern Plants in Granite Barrens 257. Figure 2. Open rocky shoreline habitat of Aristida dichotoma and Qiiercus ilicifolia in Lennox and Addington County, Ontario. Photograph taken in August 1994 by V. R. Brownell. (Oldham 4507, TRIE; Heagy 1993; Sutherland 1987; Sutherland 9351 (DAO); Goodban et al. 1994; and specimen at UWO, Oldham, personal communi- cation), is considered rare in Canada (Argus and Pryer 1990). On the open shores of Puzzle Lake {Catling & Catling 20567, 20599a; Catling & Brownell 12 August 199
. The Canadian field-naturalist. 1996 Brownell, Blaney and Catling: Southern Plants in Granite Barrens 257. Figure 2. Open rocky shoreline habitat of Aristida dichotoma and Qiiercus ilicifolia in Lennox and Addington County, Ontario. Photograph taken in August 1994 by V. R. Brownell. (Oldham 4507, TRIE; Heagy 1993; Sutherland 1987; Sutherland 9351 (DAO); Goodban et al. 1994; and specimen at UWO, Oldham, personal communi- cation), is considered rare in Canada (Argus and Pryer 1990). On the open shores of Puzzle Lake {Catling & Catling 20567, 20599a; Catling & Brownell 12 August 1994), it occurred in rock cracks that were submerged during the early part of the year. Two populations were discovered each including approximately 50 plants. Associates includ- ed Eleocharis engelmannii and Rotala ramosior. This is a widespread taxon in the United States, ranging from New Hampshire to Washington, and southward from Florida to California (Pennell 1935, map 31). In Michigan it is considered rare. The New York Natural Heritage Program does not track this taxon despite its relatively restricted historical occur- rence in only six counties (S. Young, personal com- munication, 1995; New York Flora Association 1990). It is distinguished from Lindemia dubia var. dubia by its long peduncles, relatively short leaves and open flowers. With the largest leaves 10 mm long or less and pedicel/bract ratios exceeding , as well as brownish-yellow seeds ca. mm long, the plants from Puzzle Lake are the most extreme in the direction of var. anagallidea yet collected in eastern Canada. The rank of variety has been consid- ered appropriate due to intergradation with L. dubia in the upper Mississippi valley (Cooperider and McCready 1975; Cooperider 1976). The nearest locations appear to be those in southwestern Ontario and those in Ulster County, New York State (New York Flora Association 1990) which are both about 370 km away from the newly discovered disjunct stations. Quercu
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