Oenothera hartwegii

Oenothera hartwegii (syn. Calylophus hartwegii), Hartweg's sundrops, is a species of flowering plant in the evening primrose family Onagraceae. It is native to the desert southwest of the United States, and to northern and western Mexico. A perennial usually tall and wide, it is used locally as a drought-resistant ground cover.

Subtaxa

The following subspecies are accepted:

• Oenothera hartwegii subsp. fendleri – Arizona, New Mexico, Kansas, Oklahoma, Texas, northeastern Mexico
• Oenothera hartwegii subsp. filifolia – New Mexico, Texas, northeastern Mexico
• Oenothera hartwegii subsp. hartwegii – Colorado, Texas, northern and western Mexico
• Oenothera hartwegii subsp. maccartii – Texas, northeastern Mexico
• Oenothera hartwegii subsp. pubescens – Arizona, New Mexico, Colorado, Kansas, Oklahoma, Texas, northeastern Mexico

References