S. fragilis

S. fragilis may refer to:


 * Salinator fragilis, an air-breathing land snail species
 * Salix euxina, a non-hybrid species
 * Salix × fragilis, the hybrid between Salix euxina and Salix alba
 * Sinocoelurus fragilis, a theropod dinosaur species from the Upper Jurassic
 * Skania fragilis, a fossil arthropod species from the Cambrian
 * Swainsona fragilis, a flowering plant species in the genus Swainsona native to Australasia