"Gentiana pneumonanthe" sunan kimiyya ne ga nau'in tsiro mai tsiro wanda na dangin Gentianaceae. An san shi da sunan "Marsh gentian" ko "Marsh felwort" kuma asalinsa ne a Turai da Asiya. Itacen yakan girma a cikin daskararru, wuraren damina kuma yana da furanni shuɗi-purple waɗanda suke fure a ƙarshen lokacin rani. Sunan "Gentiana" yana girmama tsohon sarki Gentius na Illyria, wanda aka ce ya gano kayan magani na wannan shuka. An samo "Pneumonanthe" daga kalmomin Helenanci "pneuma" ma'ana "numfashi" da "anthos" ma'ana "flower," yana nufin imani cewa kamshin shuka zai iya warkar da cututtukan huhu.