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Chilean evening primrose

bee-blossom, kisses, roadside gaura, wild honey-suckle

Habit 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.

Oenothera stricta

Oenothera suffulta

Phenology Flowering Apr–Aug.
Habitat In open, sandy places.
Elevation 10–1100 m. (0–3600 ft.)
Distribution
from USDA
South America [Introduced, California]
[BONAP county map]
from FNA
OK; TX
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (1 in the flora).

Oenothera stricta is a PTH species and forms a ring of 14 chromosomes in meiosis, and is self-compatible and autogamous (W. Dietrich 1977).

Subspecies stricta is naturalized in many areas around the world and may be so in California. Subspecies altissima W. Dietrich occurs only in Argentina.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Oenothera > subsect. Munzia > ser. Allochroa Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Gaura > subsect. Gaura
Sibling taxa
O. acutissima, O. albicaulis, O. argillicola, O. arida, O. arizonica, O. biennis, O. boquillensis, O. brachycarpa, O. calcicola, O. californica, O. canescens, O. capillifolia, O. cavernae, O. cespitosa, O. cinerea, O. clelandii, O. coloradensis, O. cordata, O. coronopifolia, O. coryi, O. curtiflora, O. curtissii, O. deltoides, O. demareei, O. dodgeniana, O. drummondii, O. elata, O. engelmannii, O. falfurriae, O. filiformis, O. filipes, O. flava, O. fruticosa, O. gaura, O. gayleana, O. glaucifolia, O. glazioviana, O. grandiflora, O. grandis, O. harringtonii, O. hartwegii, O. havardii, O. heterophylla, O. hispida, O. howardii, O. humifusa, O. jamesii, O. kunthiana, O. laciniata, O. lavandulifolia, O. lindheimeri, O. linifolia, O. longissima, O. macrocarpa, O. mckelveyae, O. mexicana, O. nealleyi, O. neomexicana, O. nutans, O. nuttallii, O. oakesiana, O. organensis, O. pallida, O. parviflora, O. patriciae, O. perennis, O. pilosella, O. platanorum, O. podocarpa, O. primiveris, O. psammophila, O. pubescens, O. rhombipetala, O. riparia, O. rosea, O. serrulata, O. sessilis, O. simulans, O. sinuosa, O. spachiana, O. speciosa, O. suffrutescens, O. suffulta, O. tetraptera, O. texensis, O. toumeyi, O. triangulata, O. triloba, O. tubicula, O. villosa, O. wolfii, O. xylocarpa
O. acutissima, O. albicaulis, O. argillicola, O. arida, O. arizonica, O. biennis, O. boquillensis, O. brachycarpa, O. calcicola, O. californica, O. canescens, O. capillifolia, O. cavernae, O. cespitosa, O. cinerea, O. clelandii, O. coloradensis, O. cordata, O. coronopifolia, O. coryi, O. curtiflora, O. curtissii, O. deltoides, O. demareei, O. dodgeniana, O. drummondii, O. elata, O. engelmannii, O. falfurriae, O. filiformis, O. filipes, O. flava, O. fruticosa, O. gaura, O. gayleana, O. glaucifolia, O. glazioviana, O. grandiflora, O. grandis, O. harringtonii, O. hartwegii, O. havardii, O. heterophylla, O. hispida, O. howardii, O. humifusa, O. jamesii, O. kunthiana, O. laciniata, O. lavandulifolia, O. lindheimeri, O. linifolia, O. longissima, O. macrocarpa, O. mckelveyae, O. mexicana, O. nealleyi, O. neomexicana, O. nutans, O. nuttallii, O. oakesiana, O. organensis, O. pallida, O. parviflora, O. patriciae, O. perennis, O. pilosella, O. platanorum, O. podocarpa, O. primiveris, O. psammophila, O. pubescens, O. rhombipetala, O. riparia, O. rosea, O. serrulata, O. sessilis, O. simulans, O. sinuosa, O. spachiana, O. speciosa, O. stricta, O. suffrutescens, O. tetraptera, O. texensis, O. toumeyi, O. triangulata, O. triloba, O. tubicula, O. villosa, O. wolfii, O. xylocarpa
Subordinate taxa
O. stricta subsp. stricta
Synonyms Gaura suffulta
Name authority Ledebour ex Link: Enum. Hort. Berol. Alt. 1: 377. (1821) — (as striata) (Engelmann ex A. Gray) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 214. (2007)
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