Flora of North America species comparison

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Oenothera stricta subsp. stricta

Onagraceae subfam. onagroideae
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.

stipules present or absent.
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.

floral tube present or, rarely, absent;

sepals 2 or 4 (very rarely 3), deciduous with floral tube, petals, and stamens;

petals yellow, white, pink, red, rarely in combination.
Capsules

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

Seeds

1.4–1.8 × 0.5–0.7 mm.

xI> = 7, 10, 11, 15, 18.

2n

= 14.

Oenothera stricta subsp. stricta

Onagraceae subfam. onagroideae
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]
North America; Mexico; Central America; South America; West Indies; Eurasia; Pacific Islands (New Zealand, Society Islands); Australia
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.)

Genera 21, species 582 (16 genera, 246 species in the flora).

Onagroideae encompass the main lineage of the family, after the early branching of Ludwigia (R. A. Levin et al. 2003, 2004). This large and diverse lineage is distinguished by the presence of a floral tube beyond the apex of the ovary; sepals deciduous with the floral tube, petals, and stamens; pollen shed in monads (or tetrads in Chylismia sect. Lignothera and all but one species of Epilobium); ovular vascular system exclusively transseptal (R. H. Eyde 1981); ovule archesporium multicellular (H. Tobe and P. H. Raven 1996); and change in base chromosome number from x = 8 in Ludwigia to x = 10 or x = 11 at the base of Onagroideae (Raven 1979; Levin et al. 2003). Molecular work (Levin et al. 2003, 2004) substantially supports the traditional tribal classification (P. A. Munz 1965; Raven 1979, 1988); tribes are recognized to delimit major branches within the phylogeny of Onagroideae, where the branches comprise strongly supported monophyletic groups of one or more genera.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Oenothera > subsect. Munzia > ser. Allochroa > Oenothera stricta Onagraceae
Subordinate taxa
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 W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 41. (2007)
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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