Children (14 direct children, 14 direct and indirect children):
Hymenothrix wrightii
Wright's thimblehead
Hymenothrix greenmanii
Hymenothrix loomisii
Loomis' thimblehead
Hymenothrix palmeri
Hymenothrix wislizeni
Trans-pecos thimblehead
Hymenothrix purpurea
Hymenothrix autumnalis
Hymenothrix biternata
Hymenothrix dissecta
Hymenothrix glandulopubescens
Hymenothrix janakosiana
Hymenothrix pedata
Hymenothrix wislizenii
Hymenothrix glandulosa