Flora of North America species comparison

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Oenothera drummondii subsp. drummondii

Onagraceae subfam. onagroideae
Photo is of parent taxon
Habit Herbs annual, densely strigillose, sometimes also villous, also glandular puberulent distally.
Stems

erect to decumbent, with non-flowering lateral branches, these often with terminal rosette of crowded, small leaves, 10–50 cm.

Leaves

in a basal rosette and cauline, basal 5–14 × 1–2 cm, cauline 1–8 × 0.5–2.5 cm;

blade grayish green, narrowly oblanceolate to elliptic, becoming elliptic to narrowly obovate to obovate distally, margins subentire or shallowly dentate;

bracts spreading, flat.

stipules present or absent.
Flowers

1–few opening per day near sunset;

buds erect, with free tips erect, 1–3 mm;

floral tube 25–50 mm;

sepals 20–30 mm;

petals yellow, very broadly obovate or obcordate, 25–45 mm;

filaments 10–23 mm, anthers 4–12 mm, pollen 85–100% fertile;

style 35–75 mm, stigma exserted beyond 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

cylindrical, sometimes slightly enlarged toward apex, 25–55 × 2–3 mm.

Seeds

usually ellipsoid to broadly ellipsoid, rarely subglobose, 1–2 ×0.5–0.9 mm.

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

2n

= 14.

Oenothera drummondii subsp. drummondii

Onagraceae subfam. onagroideae
Phenology Flowering Jan–Dec.
Habitat Along or near Atlantic coast on dunes and open sandy places.
Elevation 0–10 m. (0–0 ft.)
Distribution
from FNA
FL; LA; NC; SC; TX; Along or near Atlantic coast on dunes and open sandy places; Mexico (Tamaulipas, Veracruz) [Introduced in South America, sw Europe, Asia (including Taiwan), Africa, Australia]
North America; Mexico; Central America; South America; West Indies; Eurasia; Pacific Islands (New Zealand, Society Islands); Australia
Discussion

Collections of subsp. drummondii at inland localities in Bexar and Dallas counties, Texas, and Henderson County, North Carolina, presumably represent introductions; it is also widely naturalized and is known from Africa, Asia, Australia, southwestern Europe, South America, and Taiwan (W. Dietrich and W. L. Wagner 1988; Wagner et al. 2007).

(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. Raimannia > Oenothera drummondii Onagraceae
Subordinate taxa
Synonyms O. drummondii var. helleriana, O. littoralis, Raimannia littoralis
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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