. The Canadian field-naturalist. 420 The Canadian Field-Naturalist Vol. 108. Figure 3. Chara globularis. a: habit, photocopied herbarium specimen, scale bar = 5 cm; b: enlarged main axis and node, scale bar = 1000 urn; c: branchlet, scale bar = 2000 urn; d: oogonium, scale bar = 300 um; e: oospore, scale bar = 300 urn. This species was located in an oxbow of the Qu'Appelle River approximately 6 km upstream from the west end of Crooked Lake ( Grid 508115). The oxbow was created in earlier years from a section of the meandering river that had been mechanically straightened for flood contro
. The Canadian field-naturalist. 420 The Canadian Field-Naturalist Vol. 108. Figure 3. Chara globularis. a: habit, photocopied herbarium specimen, scale bar = 5 cm; b: enlarged main axis and node, scale bar = 1000 urn; c: branchlet, scale bar = 2000 urn; d: oogonium, scale bar = 300 um; e: oospore, scale bar = 300 urn. This species was located in an oxbow of the Qu'Appelle River approximately 6 km upstream from the west end of Crooked Lake ( Grid 508115). The oxbow was created in earlier years from a section of the meandering river that had been mechanically straightened for flood control pur- poses. Chara globularis covered the entire bottom in a thick carpet rooted in a fine muddy clay in 1 m of clear stagnant water. Conductivity measured 2500 umhos/cm and pH was , values somewhat higher than those of Crooked Lake. The oxbow was largely bordered by willows with Typha encroaching into the open water along part of the shore. Although this species has not yet specifically been located in Crooked Lake, its presence in the upstream drainage system and its general ubiquitous distribution sug- gest it may also be found in the lake. I also located it in a roadside borrow pit in agricultural country 9 km south of the Qu'Appelle Valley rim on provincial highway number 47 ( Grid 007473). It is. 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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