Oenothera macrocarpa subsp. macrocarpa

Synonyms: Megapterium missourense (Sims) Spach Oenothera macrocarpa var. missourensis (Sims) Carrière O. missourensis Sims O. missourensis var. latifolia A. Gray
Treatment appears in FNA Volume 10.
Revision as of 20:04, 7 June 2022 by imported>Volume Importer
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Herbs strigillose and glandular puberulent distally. Stems several, unbranched, sometimes with shorter secondary branches, 10–40 (–60) cm. Leaves green, younger ones grayish green, (6–) 8–12 (–14.5) × 0.4–2.3 (–3) cm; blade often lanceolate-elliptic to broadly elliptic, sometimes linear or lanceolate, margins usually flat, sometimes undulate, entire or inconspicuously denticulate, apex acute. Flowers: buds with unequal free tips (4–) 8–10 (–12) mm; floral-tube (78–) 95–115 (–140) mm; sepals (45–) 50–65 (–75) mm; petals (40–) 50–65 (–68) mm; filaments (25–) 30–40 (–44) mm, anthers (15–) 17–24 mm; style (120–) 135–160 (–190) mm. Capsules ovoid, narrowly ovoid, narrowly lanceoloid to broadly ellipsoid, or subglobose, not twisted, wings (14–) 18–34 mm wide, body 52–70 (–115) × 7–8 mm. 2n = 14.


Phenology: Flowering Apr–Jun(Sep).
Habitat: Rocky, clay, alkaline soil, unglaciated prairies, glades, bluffs, open prairie hillsides, disturbed sites, limestone or dolomite.
Elevation: 100–500 m.

Distribution

Ark., Ill., Kans., Mo., Nebr., Okla., Tenn., Tex.

Discussion

Subspecies macrocarpa is known from three disjunct areas: southeastern Nebraska, eastern half of Kansas, Craig and Washington counties, Oklahoma, east to Missouri south of the Missouri River and St. Clair County, Illinois, and to the northern tier of counties in Arkansas; glades near Murfreesboro, Rutherford County, Tennessee; and Blackland Prairies, Cross Timbers and eastern Edwards Plateau, from Bryan, Johnston, and Pontotoc counties, Oklahoma, southwest to Bexar, Coke, Kerr, and McCulloch counties, Texas.

Selected References

None.

Lower Taxa

None.

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

1.5 cm15 mm <br />0.015 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
Warren L. Wagner +
Nuttall +
pale green +  and yellow usually fading orange purple pale-yellow reddish or whitish +
pedicel-like +
Megapterium +
indehiscent +  and loculicidal +
elliptic +, lanceolate-elliptic to broadly +  and lanceolate-elliptic +
pinnatifid +  and dentate +
lanceolate +  and linear +
7 cm70 mm <br />0.07 m <br /> (11.5 cm115 mm <br />0.115 m <br />) +
5.2 cm52 mm <br />0.052 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
quadrangular +
curved +  and straight +
narrowly lanceoloid +  and broadly ellipsoid or subglobose +
Ark. +, Ill. +, Kans. +, Mo. +, Nebr. +, Okla. +, Tenn. +  and Tex. +
100–500 m. +
whitish +  and green +
exfoliating +
4 cm40 mm <br />0.04 m <br /> (4.4 cm44 mm <br />0.044 m <br />) +
basifixed +  and versatile +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
11.5 cm115 mm <br />0.115 m <br /> (14 cm140 mm <br />0.14 m <br />) +
hispid +, lanate +  and glabrous +
9.5 cm95 mm <br />0.095 m <br /> (11.5 cm115 mm <br />0.115 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, alkaline soil, unglaciated prairies, glades, bluffs, open prairie hillsides, disturbed sites, limestone or dolomite. +
perennial +
suffrutescent +
puberulent +  and strigillose +
nodding +  and erect +
12 cm120 mm <br />0.12 m <br /> (14.5 cm145 mm <br />0.145 m <br />) +
21 cm210 mm <br />0.21 m <br /> (34 cm340 mm <br />0.34 m <br />) +
2.3 cm23 mm <br />0.023 m <br /> (3 cm30 mm <br />0.03 m <br />) +
grayish green +  and green +
deciduous +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
5 cm50 mm <br />0.05 m <br /> (21 cm210 mm <br />0.21 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
denticulate +, entire +  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 />) +
6.5 cm65 mm <br />0.065 m <br /> (6.8 cm68 mm <br />0.068 m <br />) +
reddish orange +, fading orange +  and bright-yellow +
obovate +  and obovate to very +
5 cm50 mm <br />0.05 m <br /> (6.5 cm65 mm <br />0.065 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(Sep). +
Cat. Pl. Upper Louisiana, no. +
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 />) +
6.5 cm65 mm <br />0.065 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
purple +, pink +, red +  and green +
deciduous +
coherent +
5 cm50 mm <br />0.05 m <br /> (6.5 cm65 mm <br />0.065 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 +
40 cm400 mm <br />0.4 m <br /> (60 cm600 mm <br />0.6 m <br />) +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
petiolate +  and sessile +
intrapetiolar +
16 cm160 mm <br />0.16 m <br /> (19 cm190 mm <br />0.19 m <br />) +
pubescent +  and glabrous +
13.5 cm135 mm <br />0.135 m <br /> (16 cm160 mm <br />0.16 m <br />) +
aquatic +, amphibious +  and terrestrial +
smooth +, reticulate +  and furrowed +
Megapterium missourense +, Oenothera macrocarpa var. missourensis +, O. missourensis +  and O. missourensis var. latifolia +
Oenothera macrocarpa subsp. macrocarpa +
Oenothera macrocarpa +
subspecies +
3(-5)-aperturate +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
unequal +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
woody +  and hard +
smooth +  and erose +
not developed +
papillate +
18mm +  and 34mm +