Varieties of L. stagnalis as they were identified by malacologists of the 19th century. A. L. stagnalis var. typica (det. S. Clessin; ZIN). B. L. stagnalis var. media (det. C.A. Westerlund; GNM). C. L. stagnalis var. producta (det. C.A. Westerlund; GNM). D. L. stagnalis var. rosea (identified by a unknown person; ZMUC). E. L. stagnalis var. colpodia (det. C.A. Westerlund; GNM). F. L. stagnalis var. variegata (det. C.A. Westerlund; GNM). G. L. stagnalis var. turgida (det. C.A. Westerlund; GNM). H. L. stagnalis var. raphidia (det. C.A. Westerlund; GNM). I. L. stagnalis var. palustriformis (det. A. Fuchs, NHMW). Scale bars 5 mm.