Flora of North America species comparison

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Oenothera stricta subsp. stricta
Photo is of parent taxon
Habit Herbs annual or biennial, strigillose, especially proximally, also villous and glandular puberulent.
Stems

erect or ascending, 25–100 cm.
Leaves

in a basal rosette and cauline, basal 10–15 × 0.8–1.3 cm, cauline 6–10 × 0.6–1 cm;

blade very narrowly elliptic to oblanceolate or lanceolate, margins slightly wavy, serrate.
Flowers

buds with free tips 1–3 mm;

floral tube 20–45 mm;

sepals 14–20 mm;

petals yellow, fading reddish orange, 15–25(–35) mm;

filaments 10–20 mm, anthers 7–11 mm;

style 30–60 mm, stigma surrounded by anthers at anthesis.
Capsules

30–40 mm, subtending bract not adnate to capsule base.
Seeds

1.4–1.8 × 0.5–0.7 mm.
2n

= 14.

Oenothera stricta subsp. stricta
Phenology Flowering Apr–May.
Habitat Open, disturbed sites.
Elevation 10–500 m. (0–1600 ft.)
Distribution
from FNA
CA; South America (Chile) [Introduced in North America; introduced also widely in temperate, semiarid regions]
Discussion

Subspecies stricta has been collected in several counties near the coast in California (Monterey, Santa Barbara, and Santa Cruz counties) a few times, but the most recent collections are from 1953 and 1995, and it may no longer be naturalized in California. It is naturalized widely in temperate, semiarid areas.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Oenothera > subsect. Munzia > ser. Allochroa > Oenothera stricta
Synonyms O. arguta, O. brachysepala, O. bracteata, O. bracteata var. glabrescens, O. glabrescens, O. mollissima subsp. propinqua, O. mollissima var. valdiviana, O. propinqua, O. propinqua var. sparsiflora, O. stricta var. propinqua, O. valdiviana, Onagra arguta
Name authority unknown
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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