Difference between revisions of "Oenothera deltoides subsp. ambigua"
Aliso 5: 179. 1962.
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|subfamily=Onagraceae subfam. Onagroideae | |subfamily=Onagraceae subfam. Onagroideae | ||
|tribe=Onagraceae tribe Onagreae | |tribe=Onagraceae tribe Onagreae | ||
Latest revision as of 10:31, 9 May 2022
Herbs annual, strigillose, especially distally; from a taproot. Stems: central stem often thickened near base, branched from base, branches ascending to decumbent, not encircling stems in older plants, 5–25 cm. Leaves basal and cauline; blade rhombic-obovate to -lanceolate, becoming oblanceolate to lanceolate distally, margins subentire, sometimes coarsely sinuate-dentate distally. Flowers: buds quadrangular in distal 1/2, with free tips 1–3 mm; sepals 20–30 mm; petals 18–35 mm. Capsules 40–70 × 1.5–5 mm. 2n = 14.
Phenology: Flowering (Mar–)Jun–Jul(–Sep).
Habitat: Sandy soil in Mojave Desert with Ambrosia, Cylindropuntia, or Larrea.
Elevation: 200–1300 m.
Distribution
Ariz., Nev., Utah.
Discussion
Subspecies ambigua is restricted to a relatively small area of Mojave Desert in southeastern Nevada and adjacent areas in southwestern Utah and Arizona. W. M. Klein (1964) determined subsp. ambigua to be self-incompatible.
Selected References
None.