Children (10 direct children, 10 direct and indirect children):
Galium serpenticum subsp. puberulum
Galium serpenticum subsp. scabridum
Galium serpenticum subsp. scotticum
Galium serpenticum subsp. warnerense
Galium serpenticum var. puberulum
Galium serpenticum subsp. serpenticum
Galium serpenticum subsp. dayense
Galium serpenticum subsp. malheurense
Galium serpenticum subsp. okanoganense
Galium serpenticum subsp. wenatchicum