Oenothera pallida subsp. pallida

Synonyms: Anogra leptophylla (Torrey & A. Gray) Rydberg O. pallida var. idahoensis Munz O. pallida var. leptophylla Torrey & A. Gray
Treatment appears in FNA Volume 10.
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Herbs perennial, usually gla­brous, sometimes strigillose, rarely sparsely villous; from a taproot, lateral roots producing adventitious shoots. Stems usually branched throughout. Leaves: rosette not present at anthesis, 2–6 × 0.3–0.8 (–1) cm; blade lanceolate to linear-lanceolate or oblong, margins usually subentireor remotely denticulate, rarely pinnatifid, usually repand. Flowers: buds with free tips 0.5–2 mm; floral-tube 20–35 mm; sepals 12–18 mm; petals 12–25 mm. Capsules spreading, contorted to curved. 2n = 14.


Phenology: Flowering May–Sep.
Habitat: Sandy soil, dunes, disturbed areas, alkaline soil.
Elevation: 1100–2000 m.

Distribution

B.C., Ariz., Colo., Idaho, Nev., N.Mex., Oreg., Utah, Wash., Wyo.

Discussion

The distribution of subsp. pallida centers in the intermountain region from Oregon and Washington east of the mountains, adjacent southern British Columbia, south through southern Idaho, Wyoming, western half of Utah, southern Nevada, to northern Arizona, northwestern New Mexico, and adjacent southwestern Colorado. There are morphological intermediates with subspp. runcinata and trichocalyx. Densely strigillose plants occur within the range of subsp. pallida, especially near the St. Anthony Dunes in Idaho, and have been referred to as var. idahoensis.

Baumannia douglasiana Spach is an illegitimate name that pertains here.

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 +
Lindley +
pale green +  and yellow usually fading orange purple pale-yellow reddish or whitish +
pedicel-like +
Anogra +
indehiscent +  and loculicidal +
sinuate-dentate +  and pinnatifid denticulate subentire or entire +
lanceolate +  and linear-lanceolate or oblong +
quadrangular +
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 />) +
B.C. +, Ariz. +, Colo. +, Idaho +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +  and Wyo. +
1100–2000 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 +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 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 +
Sandy soil, dunes, disturbed areas, alkaline soil. +
perennial +
suffrutescent +
villous +  and 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 />) +
repand +, pinnatifid +  and denticulate +
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 +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 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 May–Sep. +
5 cm50 mm <br />0.05 m <br /> (7.8 cm78 mm <br />0.078 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
basal +  and cauline +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 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 /> (1.8 cm18 mm <br />0.018 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 +
50 cm500 mm <br />0.5 m <br /> (70 cm700 mm <br />0.7 m <br />) +
ascending +  and erect +
single +  and several +
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 leptophylla +, O. pallida var. idahoensis +  and O. pallida var. leptophylla +
Oenothera pallida subsp. pallida +
Oenothera pallida +
subspecies +
3(-5)-aperturate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
woody +  and hard +
smooth +  and erose +
papillate +