Which of the following plants is NOT typically found in a marsh environment?

The tamarack, also known as the Eastern larch, is a deciduous conifer that typically thrives in wet, swampy areas; however, it is more commonly found in forested wetlands or lowland forests rather than marsh environments. Marshes are dominated by herbaceous plants and are characterized by their shallow water levels and specific hydrological conditions that support a different type of vegetation, primarily grasses, sedges, and other non-woody plants.

In contrast, smart weed and pitcher plants are both well-adapted to marshy environments, with smart weed being a common herbaceous plant found in wet soil and pitcher plants thriving in nutrient-poor, waterlogged conditions. Therefore, considering the specific habitat preferences of these plants, the tamarack is not typically associated with marsh environments, making it the correct answer to the question.