Oenothera macrocarpa subsp. incana

(A. Gray) W. L. Wagner

Ann. Missouri Bot. Gard. 70: 194. 1983.

Basionym: Oenotheramissourensis sims var. incana A. Gray Boston J. Nat. Hist. 6: 189. 1850
Synonyms: Megapterium argyrophyllum R. R. Gates O. macrocarpa var. incana (A. Gray) Reveal
Treatment appears in FNA Volume 10.

Herbs strigillose, usually densely so, rarely glabrous, and sometimes glandular puber­ulent distally. Stems several, unbranched, sometimes with shorter secondary branches, 1–20 (–30) cm. Leaves usually gray, rarely green, (5–) 6.2–12.5 (–17) ×2–4.3 cm; blade usually very broadly elliptic to suborbiculate, rarely oblanceolate or elliptic, margins usually flat, sometimes undulate, usually entire, sometimes inconspicuously denticulate, apex usually acute to obtuse, sometimes retuse. Flowers: buds with unequal free tips 5–11 mm; floral-tube (50–) 70–140 (–160) mm; sepals (25–) 35–50 mm; petals (25–) 31–50 (–52) mm; filaments (13–) 15–25 (–28) mm, anthers (10–) 14–20 mm; style (75–) 100–192 mm. Capsules broadly ellipsoid to globose, not twisted, wings 10–15 (–24) mm wide, body 28–48 (–74) × 6–8 mm. 2n = 14.


Phenology: Flowering Apr–Jun(–Aug).
Habitat: Rocky, clay soil, grass­lands, disturbed sites, limestone, gypsum, rarely igneous soil.
Elevation: (500–)600–1200 m.

Discussion

Subspecies incana occurs on the high plains in Clark, Comanche, Kiowa, and Meade counties, Kansas, south across Oklahoma as far east as Comanche and Harper counties to the Texas Panhandle to Garza and Knox counties; one collection is known from Taylor County, Texas.

Selected References

None.

Lower Taxa

None.

"/4" is not declared as a valid unit of measurement for this property.

1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (2 cm20 mm <br />0.02 m <br />) +
retuse +, usually acute +  and obtuse +
Warren L. Wagner +
(A. Gray) W. L. Wagner +
pale green +  and yellow usually fading orange purple pale-yellow reddish or whitish +
pedicel-like +
Oenotheramissourensis sims var. incana +
indehiscent +  and loculicidal +
lanceolate-elliptic +
pinnatifid +  and dentate +
very broadly elliptic +  and suborbiculate rarely oblanceolate or elliptic +
4.8 cm48 mm <br />0.048 m <br /> (7.4 cm74 mm <br />0.074 m <br />) +
2.8 cm28 mm <br />0.028 m <br /> (4.8 cm48 mm <br />0.048 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
quadrangular +
curved +  and straight +
broadly ellipsoid +  and globose +
Kans. +, Okla. +  and Tex. +
(500–)600–1200 m. +
whitish +  and green +
exfoliating +
2.5 cm25 mm <br />0.025 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
basifixed +  and versatile +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
14 cm140 mm <br />0.14 m <br /> (16 cm160 mm <br />0.16 m <br />) +
hispid +, lanate +  and glabrous +
7 cm70 mm <br />0.07 m <br /> (14 cm140 mm <br />0.14 m <br />) +
zygomorphic +  and actinomorphic +
scented +
2 +  and 1 +
curved +  and straight +
indehiscent +  and dehiscent +
4-angled +, terete +, tapering +, cylindrical +, ellipsoid +, clavate +, ovoid ellipsoid +  and cylindrical rhombic-obovoid or globose +
Rocky, clay soil, grasslands, disturbed sites, limestone, gypsum, rarely igneous soil. +
perennial +
suffrutescent +
glabrous +  and strigillose +
nodding +  and erect +
12.5 cm125 mm <br />0.125 m <br /> (17 cm170 mm <br />0.17 m <br />) +
21 cm210 mm <br />0.21 m <br /> (34 cm340 mm <br />0.34 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
green +  and gray +
deciduous +
6.2 cm62 mm <br />0.062 m <br /> (12.5 cm125 mm <br />0.125 m <br />) +
5 cm50 mm <br />0.05 m <br /> (21 cm210 mm <br />0.21 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4.3 cm43 mm <br />0.043 m <br />) +
denticulate +  and undulate +
pedicellate +  and sessile +
1 +  and 8 +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
5 cm50 mm <br />0.05 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
reddish orange +, fading orange +  and bright-yellow +
obovate +  and obovate to very +
3.1 cm31 mm <br />0.031 m <br /> (5 cm50 mm <br />0.05 m <br />) +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering Apr–Jun(–Aug). +
Ann. Missouri Bot. Gard. +
basal +  and cauline +
clavate +  and globose +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
brown +, grayish +  and yellowish-brown brown or dark purplish +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
8 +  and numerous +
sculptured +  and smooth +
obovoid +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
purple +, pink +, red +  and green +
deciduous +
coherent +
3.5 cm35 mm <br />0.035 m <br /> (5 cm50 mm <br />0.05 m <br />) +
parietal +, axile +  and placentation +
unequal +
adventitious +
aquatic +, amphibious +  and terrestrial +
in 2 unequal series +  and subequal +
2 times as many or as many as sepals +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (20 cm200 mm <br />0.2 m <br />) +
petiolate +  and sessile +
intrapetiolar +
7.5 cm75 mm <br />0.075 m <br /> (10 cm100 mm <br />0.1 m <br />) +
pubescent +  and glabrous +
10 cm100 mm <br />0.1 m <br /> (19.2 cm192 mm <br />0.192 m <br />) +
aquatic +, amphibious +  and terrestrial +
smooth +, reticulate +  and furrowed +
Megapterium argyrophyllum +  and O. macrocarpa var. incana +
Oenothera macrocarpa subsp. incana +
Oenothera macrocarpa +
subspecies +
3(-5)-aperturate +
1.1 cm11 mm <br />0.011 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
unequal +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
woody +  and hard +
smooth +  and erose +
not developed +
papillate +
10mm +  and 15mm +