Flora of North America species comparison

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Oenothera pallida subsp. runcinata
Photo is of parent taxon
Habit Herbs perennial, strigillose, sometimes also sparsely villous, or glabrous; from a taproot, lateral roots producing adventitious shoots.
Stems

usually branched throughout.
Leaves

rosette not present at anthesis, 2–3.5(–5) × 0.4–1(–1.5) cm;

blade oblong to narrowly lanceolate, margins usually deeply sinuate-dentate to pinnatifid, rarely dentate only.
Flowers

buds with free tips 0–0.2 mm;

floral tube 15–30 mm;

sepals 10–25 mm;

petals 10–30 mm.
Capsules

spreading to reflexed, straight or curved, sometimes contorted.
2n

= 14.

Oenothera pallida subsp. runcinata
Phenology Flowering (Apr–)May–Sep.
Habitat Sandy soil, dunes, disturbed areas, alkaline soil, pinyon-juniper woodlands, shrublands with Artemisia, Ericameria, or Prosopis, open ponderosa pine woodlands.
Elevation 1100–2400 m. (3600–7900 ft.)
Distribution
from FNA
AZ; CO; NM; TX; UT; Mexico (Chihuahua)
[BONAP county map]
Discussion

Subspecies runcinata replaces subsp. pallida in the southern part of the species range. In New Mexico, it is most morphologically diverse, with plants with subentire leaves densely strigillose recognized in the past as subsp. gypsophila. The distribution and characteristics of these plants should be studied more in relation to other types of populations included in subsp. runcinata. Glabrous plants in the southern portion of the range of subsp. runcinata, especially in New Mexico, adjacent Texas, and Chihuahua, Mexico, have been recognized as var. brevifolia.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Anogra > Oenothera pallida
Sibling taxa
O. pallida subsp. latifolia, O. pallida subsp. pallida, O. pallida subsp. trichocalyx
Synonyms O. albicaulis var. runcinata, Anogra gypsophila, A. leucotricha, A. pallida var. runcinata, A. runcinata, O. albicaulis var. brevifolia, O. albicaulis var. gypsophila, O. pallida subsp. gypsophila, O. pallida var. runcinata, O. runcinata, O. runcinata var. brevifolia, O. runcinata var. gypsophila, O. runcinata var. leucotricha, O. wislizeni
Name authority (Engelmann) Munz & W. M. Klein in N. L. Britton et al.: N. Amer. Fl., ser. 2, 5: 119. (1965)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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