. The Canadian field-naturalist. Natural history; Sciences naturelles. Figure 1. Vegetative fronds of Wolffia brasiliensis from Frontenac County, Ontario, showing central papilla. Photograph by Stephen J. Darbyshire. come from an "artificial pond caused by a construction error, flooded 8-10 years previously", near Christie Lake, in Lanark County, Ontario. It is interesting to note that Christie Lake is only about 20 km from the Gaiter Lake site. Situated in a predominantly deciduous forest, the Beaver pond near Garter Lake was edged with Wool- grass (Scirpi/s cyperinus) and Bristly S
. The Canadian field-naturalist. Natural history; Sciences naturelles. Figure 1. Vegetative fronds of Wolffia brasiliensis from Frontenac County, Ontario, showing central papilla. Photograph by Stephen J. Darbyshire. come from an "artificial pond caused by a construction error, flooded 8-10 years previously", near Christie Lake, in Lanark County, Ontario. It is interesting to note that Christie Lake is only about 20 km from the Gaiter Lake site. Situated in a predominantly deciduous forest, the Beaver pond near Garter Lake was edged with Wool- grass (Scirpi/s cyperinus) and Bristly Sedge (Carex comosa) and contained a variety of water plants includ- ing Watershield (Brasenia schreberi). Greater Bladder- wort {Utricularia macrorhiza, Bur-reed (Sparganium americanuni), and Coontail {Ceratopbyllum demer- suni). Mixed in with the W. brasiliensis were a few plants of W columbiana. Over the summer of 2003, the colony increased in size. Whereas on 3 July it had. 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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