Oenothera hartwegii

Oenothera hartwegii
At the Huntington Library, Art Museum and Botanical Gardens
Near Sierra Vista, Arizona
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Myrtales
Family:	Onagraceae
Genus:	Oenothera
Species:	O. hartwegii
Binomial name
Oenothera hartwegii Benth.
Synonyms
List Calylophus hartwegii (Benth.) P.H.Raven Calylophus hartwegii subsp. fendleri (A.Gray) Towner & Raven Calylophus hartwegii subsp. filifolia (Eastw.) Towner & Raven Calylophus hartwegii var. filifolia (Eastw.) Munz Calylophus hartwegii var. maccartii Shinners Calylophus hartwegii subsp. maccartii (Shinners) Towner & Raven Calylophus hartwegii var. pubescens (A.Gray) Shinners Calylophus hartwegii subsp. pubescens (A.Gray) Towner & Raven Galpinsia camporum Wooton & Standl. Galpinsia fendleri (A.Gray) A.Heller Galpinsia filifolia (Eastw.) A.Heller Galpinsia greggii (A.Gray) Small Galpinsia hartwegii (Benth.) Britton Galpinsia hartwegii var. fendleri (A.Gray) Small Galpinsia interior Small Galpinsia lampasana (Buckley) Wooton & Standl. Galpinsia lavandulifolia var. glandulosa (Munz) Moldenke Oenothera camporum (Wooton & Standl.) Tidestr. Oenothera fendleri A.Gray Oenothera filifolia (Eastw.) Tidestr. Oenothera greggii A.Gray Oenothera greggii var. lampasana (Buckley) Munz Oenothera greggii var. pringlei Munz Oenothera greggii var. pubescens A.Gray Oenothera greggii var. typica Munz Oenothera hartwegii subvar. filifolia (Eastw.) H.Lév. Oenothera hartwegii var. filifolia (Eastw.) Munz Oenothera hartwegii var. fendleri (A.Gray) A.Gray Oenothera hartwegii var. pubescens (A.Gray) Allred Oenothera hartwegii f. thymifolia H.Lév. Oenothera hartwegii var. typica Munz Oenothera interior (Small) G.W.Stevens Oenothera lampasana Buckley Oenothera lavandulifolia var. glandulosa Munz Oenothera pringlei (Munz) Munz Oenothera tubicula var. filifolia Eastw. Salpingia hartwegii (Benth.) Raim.

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 30 to 45 cm (12 to 18 in) tall and 60 cm (24 in) wide, it is used locally as a drought-resistant ground cover.

Subtaxa

The following subspecies are accepted:

• Oenothera hartwegii subsp. fendleri (A.Gray) W.L.Wagner & Hoch – Arizona, New Mexico, Kansas, Oklahoma, Texas, northeastern Mexico
• Oenothera hartwegii subsp. filifolia (Eastw.) W.L.Wagner & Hoch – New Mexico, Texas, northeastern Mexico
• Oenothera hartwegii subsp. hartwegii – Colorado, Texas, northern and western Mexico
• Oenothera hartwegii subsp. maccartii (Shinners) W.L.Wagner & Hoch – Texas, northeastern Mexico
• Oenothera hartwegii subsp. pubescens (A.Gray) W.L.Wagner & Hoch – Arizona, New Mexico, Colorado, Kansas, Oklahoma, Texas, northeastern Mexico