familyOnagraceae
subfamilyOnagraceae subfam. Onagroideae
genusOenothera
sectionOenothera sect. Oenothera
subsectionOenothera subsect. Candela
speciesOenothera heterophylla
subspeciesOenothera heterophylla subsp. orientalis
Oenothera heterophylla subsp. orientalis
Ann. Missouri Bot. Gard. 70: 196. 1983.
Treatment appears in FNA Volume 10.
Herbs densely to sparsely strigillose, also at least parts of inflorescence glandular puberulent or glabrate. Flowers: buds with free tips usually erect, 1–3 mm; floral tube 30–47 mm; sepals 17–30 mm; petals 25–35 mm. 2n = 14.
Phenology: Flowering May–Jul.
Habitat: Sandy soil of open sites, old alluvium areas in woodlands.
Elevation: 30–60 m.
Discussion
Subspecies orientalis is known from two disjunct areas: Greene, Pickens, and Sumter counties, Alabama, and Calhoun, Nevada, and Ouachita counties, Arkansas. W. Dietrich and W. L. Wagner (1988) determined populations in Arkansas to be self-incompatible while those sampled in Alabama were self-compatible.
Selected References
None.
Lower Taxa
None.