Children (8 direct children, 8 direct and indirect children):
Oenothera hartwegii hartwegii
Oenothera hartwegii subsp. fendleri
Oenothera hartwegii subsp. filifolia
Oenothera hartwegii subsp. maccartii
Oenothera hartwegii subsp. pubescens
Oenothera hartwegii var. filifolia
Oenothera hartwegii var. toumeyi
Oenothera hartwegii var. pubescens