C. palustris may refer to: Calamus palustris, a rattan palm species in the genus Calamus Caltha palustris, the kingcup or marsh marigold, a plant species native to temperate regions of the Northern Hemisphere Cistothorus palustris, the marsh wren, a small songbird species found in North America Claytonia palustris, a wildflower species in the purslane family known by the common names Jonesville springbeauty and marsh claytonia Coespeletia palustris, a wildflower native to the Andes Crocodylus palustris, the mugger crocodile, Indian, Indus, Persian or marsh crocodile, a reptile species found throughout the Indian subcontinent and the surrounding countries