S. palustris

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