Planothidium sheathii Stancheva
Planothidium sheathii in Phytotaxa 393(2): 132, fig. 1-29. 21 Feb 20191
Holotype: United States of America, San Joaquin River, California, alt. 51 m, 36°46'44.526"N, 120°14'W, 9 Jul 2018, G. Ichikawa (ANSP: GC 65325)
Isotype: United States of America, San Joaquin River, California, alt. 51 m, 36°46'44.526"N, 120°14'W, 9 Jul 2018, G. Ichikawa (CSUSM: RS 056)