Oenothera pallida subsp. latifolia

(Rydberg) Munz in N. L. Britton et al.

N. Amer. Fl., ser. 2, 5: 119. 1965.

Basionym: Oenothera pallida var. latifolia Rydberg Contr. U.S. Natl. Herb. 3: 159. 1895
Synonyms: Anogra cinerea Rydberg A. latifolia (Rydberg) Rydberg A. pallida var. latifolia (Rydberg) Small O. latifolia (Rydberg) Munz
Treatment appears in FNA Volume 10.
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Herbs perennial, densely strigillose throughout; from a taproot, lateral roots producing adventitious shoots. Stems usually several, branched from base, sometimes unbranched. Leaves: rosette not present at anthesis, 1–5 (–7) × (0.4–) 0.7–1.5 cm; blade narrowly ovate to oblong-lanceolate or lanceolate, margins shallowly sinuate-dentate or denticulate. Flowers: buds with free tips 1–2 mm; floral-tube 15–40 mm; sepals 12–30 mm; petals 15–40 mm. Capsules spreading, straight or curved, sometimes contorted. 2n = 14.


Phenology: Flowering Jun–Sep.
Habitat: Open sites, sandy soil, dunes, rocky sites in grasslands.
Elevation: 600–2000(–3100) m.

Distribution

Colo., Kans., Nebr., N.Mex., Okla., S.Dak., Utah, Wyo.

Discussion

Some collections from mostly disturbed sites in northern Utah (Cache, Salt Lake, Summit, and Tooele counties) have been identified as subsp. latifolia; it is not clear if they represent a disjunct distribution area of this subspecies, naturalized populations, or if they are pubescent forms of subsp. pallida.

Selected References

None.

Lower Taxa

None.
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Warren L. Wagner +
(Rydberg) Munz in N. L. Britton et al. +
pale green +  and yellow usually fading orange purple pale-yellow reddish or whitish +
pedicel-like +
Oenothera pallida var. latifolia +
indehiscent +  and loculicidal +
sinuate-dentate +  and pinnatifid denticulate subentire or entire +
narrowly ovate +  and oblong-lanceolate or lanceolate +
quadrangular +
curved +  and straight +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
tapering +, 4-angled +  and cylindrical +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Colo. +, Kans. +, Nebr. +, N.Mex. +, Okla. +, S.Dak. +, Utah +  and Wyo. +
600–2000(–3100) m. +
pink +  and white +
exfoliating +
basifixed +  and versatile +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
hispid +, lanate +  and glabrous +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
zygomorphic +  and actinomorphic +
unscented +
1 +  and several +
curved +  and straight +
indehiscent +  and dehiscent +
4-angled +, terete +, tapering +, cylindrical +, ellipsoid +, clavate +, ovoid ellipsoid +  and cylindrical rhombic-obovoid or globose +
Open sites, sandy soil, dunes, rocky sites in grasslands. +
perennial +
suffrutescent +
strigillose +
nodding +  and erect +
13 cm130 mm <br />0.13 m <br /> (26 cm260 mm <br />0.26 m <br />) +
deciduous +
1 cm10 mm <br />0.01 m <br /> (13 cm130 mm <br />0.13 m <br />) +
denticulate +  and sinuate-dentate +
pedicellate +  and sessile +
1 +  and 8 +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
fading pink +  and deep pink +
obcordate +  and obovate +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Jun–Sep. +
N. Amer. Fl., ser. +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
basal +  and cauline +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
clavate +  and globose +
black +  and brownish +
sculptured +  and smooth +
obovoid +
reduced +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
not spotted +
deciduous +
1.2 cm12 mm <br />0.012 m <br /> (3 cm30 mm <br />0.03 m <br />) +
parietal +, axile +  and placentation +
unequal +
adventitious +
aquatic +, amphibious +  and terrestrial +
in 2 unequal series +  and subequal +
2 times as many or as many as sepals +
unbranched +  and branched +
50 cm500 mm <br />0.5 m <br /> (70 cm700 mm <br />0.7 m <br />) +
ascending +  and erect +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
petiolate +  and sessile +
intrapetiolar +
pubescent +  and glabrous +
2.5 cm25 mm <br />0.025 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
aquatic +, amphibious +  and terrestrial +
smooth +, reticulate +  and furrowed +
alveolate +
Anogra cinerea +, A. latifolia +, A. pallida var. latifolia +  and O. latifolia +
Oenothera pallida subsp. latifolia +
Oenothera pallida +
subspecies +
3(-5)-aperturate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
woody +  and hard +
smooth +  and erose +
papillate +