Oenothera pubescens Willd. ex Spreng.  

Family: Onagraceae

silky evening primrose, more...South American Evening-Primrose, South American eveningprimrose

[Oenothera amplexicaulis (Woot. & Standl.) Tidestrom, moreOenothera laciniata subsp. pubescens (Willd. ex Spreng.) Munz, Oenothera laciniata var. pubescens (Willd. ex Spreng.) Munz]