Brant - 5521 - United States
Bush - 9058 - United States
Davidse - 3378 - United States
Davidse - 38332 - United States
Davidse - 42590 - United States
Hayden - 10346 - United States
Moore - 13321 - United States
Morrell - 309 - United States
Palmer - 42125 - United States
Phemeranthus parviflorus
Steyermark - 19291 - United States
Steyermark - 7460 - United States
Tharp - s.n. - United States
Windham - 2613 - United States