Oenothera suffulta

(Engelmann ex A. Gray) W. L. Wagner & Hoch

Syst. Bot. Monogr. 83: 214. 2007.

Basionym: Gaura suffulta Engelmann ex A. Gray Boston J. Nat. Hist. 6: 190. 1850
Treatment appears in FNA Volume 10.

Herbs annual, sparsely villous proximally, leaves glabrate to sparsely villous along veins and on margins, usually glabrous distally, except sometimes proximal part of inflorescence, especially bracts, sparsely villous; from stout taproot. Stems usually well-branched, 25–120 cm. Leaves in a basal rosette and cauline, basal 7–11 × 0.1–2.3 cm, blade lyrate; cauline 1–9.5 × 0.1–2.3 cm, blade narrowly lanceolate to linear, margins sinuate-dentate, undulate. Flowers 4-merous, zygomorphic, opening at sunset; floral tube 6.5–14 mm; sepals 11–21 mm; petals white, fading pink to red or sometimes purple, elliptic-obovate, 10–15 mm; filaments 6–9 mm, anthers 2–6 mm, pollen 90–100% fertile; style 16–32 mm, stigma exserted beyond anthers at anthesis. Capsules ovoid, narrowly 4-winged, furrowed between angles, 4.5–8 × 2–5 mm, abruptly tapering to stipe 0–1 mm; sessile. Seeds (1 or)2–4(or 5), yellowish to light brown, 2–3 × 1 mm. 2n = 14.


Phenology: Flowering Apr–Aug.
Habitat: In open, sandy places.
Elevation: 10–1100 m.

Discussion

Oenothera suffulta is more common in western Texas while uncommon elsewhere throughout Texas, and absent in the Trans-Pecos region. P. H. Raven and D. P. Gregory (1972[1973]) determined O. suffulta to be self-incompatible.

Selected References

None.

Lower Taxa

None.
... more about "Oenothera suffulta"
Warren L. Wagner +
(Engelmann ex A. Gray) W. L. Wagner & Hoch +
Gaura suffulta +
Okla. +  and Tex. +
10–1100 m. +
In open, sandy places. +
Flowering Apr–Aug. +
Syst. Bot. Monogr. +
Gaura sect. +  and Pleurostemon rafinesque +
Oenothera suffulta +
Oenothera subsect. Gaura +
species +