蝴蝶谷
Eleocharis torticulmis is a rare species of flowering plant in the sedge family known by the common names twisted spikerush and twist-stem spikerush. It is endemic to Plumas County, California, where it is known from two locations within a kilometer of each other in the Butterfly Valley Botanical Area. It grows in open wet habitat such as fens and meadows. It was separated from "Eleocharis suksdorfiana" and described to science as a new species in 2001.