S. palustris may refer to: Sorex palustris, a species of semi-aquatic shrew found in North America Sphaenorhynchus palustris, a frog species endemic to Brazil Stachys palustris, the marsh woundwort, an edible perennial grassland herb species Stagnicola palustris, a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae, the pond snails Sylvilagus palustris, the marsh rabbit, a mammal species found in marshes and swamps of coastal regions of the Eastern and Southern United States