Oenothera glaucifolia |
Oenothera patriciae |
|
---|---|---|
false gaura |
plains beeblossom |
|
Habit | Herbs probably biennial, glabrous, becoming sparsely to densely glandular puberulent and short-villous distally, glaucous at least in proximal parts; from stout roots. | Herbs annual, villous proximally, sparsely villous along leaf veins and on margins, usually glabrate or, sometimes, strigillose distally; from taproot. |
Stems | erect, branched or unbranched, 30–300 cm. |
usually well-branched from base and distally, rarely unbranched, 15–65(–85) cm. |
Leaves | in a basal rosette and cauline, basal 3–7 × 0.5–2 cm, sessile, blade oblong to oblong-lanceolate, base usually ± auriculate, margins entire; cauline 3–8(–10) × 0.4–1.8 cm, blade lanceolate to oblong-lanceolate, gradually smaller, becoming linear-subulate distally. |
in a basal rosette and cauline, basal 6–9.5 × 1–2 cm, blade lyrate; cauline 1–7 × 0.1–2.3 cm, blade narrowly lanceolate to oblanceolate, margins shallowly sinuate-denticulate to subentire. |
Inflorescences | long, wandlike, unbranched or branched. |
|
Flowers | 4-merous, nearly actinomorphic, opening near sunrise; floral tube 6–17 mm; sepals 4–6 mm; petals white, fading off-white or tinged pink, slightly unequal, rhombic, 4–6 mm, abruptly clawed; filaments 5–8 mm, anthers 1.5–2 mm, pollen 85–100% fertile; style 6–10, stigma exserted beyond anthers at anthesis. |
(3- or)4-merous, zygomorphic, opening at sunset; floral tube 6–12 mm; sepals 10–15 mm; petals white, fading pink to purple, elliptic-obovate, 8–13 mm; filaments 5–8 mm, anthers 2–4 mm, pollen 90–100% fertile; style 15–24 mm, stigma exserted beyond anthers at anthesis. |
Capsules | ovoid, 4-angled, somewhat flattened, 3–4 × 1.5–2.3 mm, valves with raised midrib and conspicuous lateral veins; sessile. |
ellipsoid, narrowly (3- or)4-winged, deeply furrowed between wings, 6–10 × 2–3 mm, with or without prominent lower corners, narrowed to a stipe 0–1 mm; sessile. |
Seeds | 1, pale yellow, oblanceoloid, 2.4–2.6 × 1–1.5 mm. |
3 or 4, yellowish to reddish brown, 2–3 × 1–1.5 mm. |
2n | = 14. |
= 14. |
Oenothera glaucifolia |
Oenothera patriciae |
|
Phenology | Flowering May–Oct(–Nov). | Flowering Feb–Jun. |
Habitat | Rocky prairie slopes and outcrops or bluffs, along streams, roadsides, usuallyon limestone. | Open, sandy sites. |
Elevation | 200–1300 m. (700–4300 ft.) | 0–300 m. (0–1000 ft.) |
Distribution |
AR; CO; KS; MO; NE; NM; OK; TX; WY
|
LA; MS; OK; TX |
Discussion | Oenothera glaucifolia is self-incompatible, the flowers diurnal, pollinated primarily by wasps (R. Clinebell, unpubl.), as well as bees, flies, butterflies, and occasionally beetles (summarized by W. L. Wagner et al. 2007). It was collected once in 1988 in Indiana at Miller Woods Visitor Center (Lake County), Dritz 596 (MOR); it seems likely that it was introduced, and has not been collected there since. Stenosiphon virgatus Spach is a superfluous name and pertains here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Oenothera patriciae is known from Acadia Parish, Louisiana, Amite County, Mississippi, Bryan and Love counties, Oklahoma, and eastern Texas. Reports of Oenothera patriciae near Tulsa, Oklahoma, and at the single locations in Arkansas and Mississippi may represent introductions. P. H. Raven and D. P. Gregory (1972[1973]) determined O. patriciae to be self-compatible, but primarily outcrossing. (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. Gaura > subsect. Stenosiphon | Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Gaura > subsect. Gaura |
Sibling taxa | ||
Synonyms | Gaura linifolia, Stenosiphon linifolius | Gaura brachycarpa, G. hexandra var. coryi, G. tripetala var. coryi |
Name authority | W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 212. (2007) | W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 213. (2007) |
Web links |