familyOnagraceae
subfamilyOnagraceae subfam. Onagroideae
tribeOnagraceae tribe Onagreae
genusOenothera
sectionOenothera sect. Megapterium
speciesOenothera macrocarpa
subspeciesOenothera macrocarpa subsp. fremontii

Oenothera macrocarpa subsp. fremontii

(S. Watson) W. L. Wagner

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

Warren L. Wagner
Basionym: Oenothera fremontii S. Watson Proc. Amer. Acad. Arts 8: 587. 1873
Synonyms: Megapterium fremontii (S. Watson) Britton
Treatment appears in FNA Volume 10.

Herbs densely strigillose. Stems numerous, with numerous short secondary branches, 3–30 cm. Leaves gray, (2.8–) 3.7–11 × 0.1–0.6 (–1.5) cm; blade linear to narrowly elliptic to narrowly elliptic-lanceolate or narrowly oblanceolate, margins flat, entire or inconspicuously denticulate, apex acute. Flowers: buds with unequal free tips 1–2 (–5) mm; floral-tube (21–) 35–65 (–80) mm; sepals (20–) 25–30 (–37) mm; petals (17–) 25–33 (–37) mm; filaments 13–18 mm, anthers 10–12 mm; style (45–) 55–80 (–98) mm. Capsules ellip­soid to narrowly ellipsoid, often twisted, wings 2–5 (–9) mm wide, body 13–30 (–65) × 2–6 mm. 2n = 14.


Phenology: Flowering May–Aug.
Habitat: Rocky soil derived from fine-textured sandstone, shale or chalk on rocky hillsides, bluffs, badlands.
Elevation: 400–900 m.

Distribution

Kans., Nebr.

Discussion

Subspecies fremontii occurs from Franklin and Webster counties in south-central Nebraska south into Kansas to Ellsworth, Hodgeman, and Logan counties; also with disjunct locations in Antelope and Cedar counties in northeastern Nebraska, and Barber County in south-central Kansas. Some specimens from the eastern part of the range, where subsp. fremontii and subsp. macrocarpa are sympatric, appear intermediate between the two subspecies and are difficult to assign.

Selected References

None.

Lower Taxa

None.

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

... more about "Oenothera macrocarpa subsp. fremontii"
RDF feed
2n chromosome quantity
14 +
4-locular septum architecture
incomplete +
4-locular septum architecture or structure in adjective form
1-locular +
Androecium position
epigynous +
Anther atypical some measurement
2.4 cm24 mm <br />0.024 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Anther fixation
versatile +
Anther some measurement
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Apex shape
acute +
Author
Warren L. Wagner +
Authority
(S. Watson) W. L. Wagner +
Basal leaf arrangement
alternate +
Basal leaf position
cauline +
Basal leaf presence
absent +
Base coloration
pale green +  and yellow usually fading orange purple pale-yellow reddish or whitish +
Base shape
pedicel-like +
Basionyms
Oenothera fremontii +
Berry architecture or shape
nutlike +
Berry dehiscence
indehiscent +  and loculicidal +
Blade arrangement or course or shape
linear +
Blade arrangement or shape
lanceolate-elliptic +
Blade margin architecture or shape
entire +
Blade margin shape
pinnatifid +  and dentate +
Blade shape
narrowly elliptic +  and narrowly elliptic-lanceolate or narrowly oblanceolate +
Body atypical length
3 cm30 mm <br />0.03 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
Body dehiscence
dehiscent +
Body length
1.3 cm13 mm <br />0.013 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Body width
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Bud orientation
erect +
Bud shape
quadrangular +
Capsule architecture
twisted +
Capsule architecture or shape
nutlike +
Capsule architecture or structure in adjective form
4-locular +
Capsule condition or texture
dry +
Capsule course
curved +  and straight +
Capsule dehiscence
dehiscent +
Capsule shape
ellipsoid +
Capsule texture
papery +
Carpel quantity
Many (?) +
Cel reproduction
vegetative +
Day coloration
fading +
Day growth order or position
next +
Day quantity
2 +
Distribution
Kans. +  and Nebr. +
Elevation
400–900 m. +
Embryo-sac coating
oily +
Embryo-sac course
straight +
Embryo-sac presence
absent +
Embryo coating
oily +
Embryo course
straight +
Embryo presence
absent +
Endosperm coating
oily +
Endosperm course
straight +
Endosperm presence
absent +
Epidermis coloration
whitish +  and green +
Epidermis relief
exfoliating +
Filament architecture
dithecal +
Filament atypical some measurement
4 cm40 mm <br />0.04 m <br /> (4.4 cm44 mm <br />0.044 m <br />) +
Filament fixation
basifixed +  and versatile +
Filament fusion
distinct +
Filament some measurement
1.3 cm13 mm <br />0.013 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Floral-tube atypical some measurement
6.5 cm65 mm <br />0.065 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Floral-tube duration
deciduous +
Floral-tube presence
absent +
Floral-tube pubescence
hispid +, lanate +  and glabrous +
Floral-tube quantity
, +
Floral-tube some measurement
3.5 cm35 mm <br />0.035 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
Flower architecture
zygomorphic +  and actinomorphic +
Flower architecture or arrangement or growth form
solitary +
Flower duration
lasting +
Flower odor
scented +
Flower part duration
deciduous +
Flower part life cycle
anthesis +
Flower quantity
2 +  and 1 +
Flower reproduction
bisexual +
Fruit architecture
winged +
Fruit course
curved +  and straight +
Fruit dehiscence
indehiscent +  and dehiscent +
Fruit shape
4-angled +, terete +, tapering +, cylindrical +, ellipsoid +, clavate +, ovoid ellipsoid +  and cylindrical rhombic-obovoid or globose +
Habitat
Rocky soil derived from fine-textured sandstone, shale or chalk on rocky hillsides, bluffs, badlands. +
Hair height or length or size
short +
Hair position relational
interlocking +
Herb architecture
caulescent +
Herb architecture or function or pubescence
glandular +
Herb duration
perennial +
Herb growth form
suffrutescent +
Herb pubescence
strigillose +
Indusium architecture
peltate +
Indusium prominence
conspicuous +
Inflorescence position
axillary +
Internal cavity arrangement
adjacent +
Lateral root orientation
spreading +
Leaf-axil orientation
nodding +  and erect +
Leaf architecture
simple +
Leaf arrangement
alternate +
Leaf atypical length
2.8 cm28 mm <br />0.028 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
Leaf atypical some measurement
21 cm210 mm <br />0.21 m <br /> (34 cm340 mm <br />0.34 m <br />) +
Leaf atypical width
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Leaf coloration
gray +
Leaf condition
later +
Leaf duration
deciduous +
Leaf length
3.7 cm37 mm <br />0.037 m <br /> (11 cm110 mm <br />0.11 m <br />) +
Leaf position
cauline +
Leaf presence
absent +
Leaf some measurement
5 cm50 mm <br />0.05 m <br /> (21 cm210 mm <br />0.21 m <br />) +
Leaf width
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Lobe arrangement or course or shape
linear +
Lobe quantity
4 (?) +
Locule arrangement or growth form
clustered +
Locule quantity
many +
Margin architecture or relief
erose +
Margin shape
denticulate +, entire +  and flat +
Mouth condition
closing +
Nectary presence
absent +
Number of lower taxa
0 +
Ovary architecture
pedicellate +  and sessile +
Ovary architecture or structure in adjective form
1-locular +
Ovary position
inferior +
Ovule architecture
bitegmic +
Ovule arrangement or growth form
clustered +
Ovule orientation
anatropous +
Ovule quantity
1 +  and 8 +
Pedicel atypical some measurement
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Pedicel some measurement
0.1 cm1 mm <br />0.001 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Perianth position
epigynous +
Petal arrangement
imbricate +
Petal arrangement or shape
convolute +
Petal atypical some measurement
3.3 cm33 mm <br />0.033 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
Petal coloration
reddish orange +, fading orange +  and bright-yellow +
Petal condition or development
unchanged +
Petal presence
absent +
Petal quantity
4 +
Petal shape
obovate +  and obovate to very +
Petal some measurement
2.5 cm25 mm <br />0.025 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
Petiole atypical some measurement
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Petiole some measurement
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Phenology
Flowering May–Aug. +
Pollen-grain dehiscence or orientation
longitudinal +
Pollen arrangement
singly +
Polyad arrangement
singly +
Proximal part reproduction
sterile +
Publication title
Ann. Missouri Bot. Gard. +
Publication year
1983 +
Raphide quantity
abundant +
Reference
None +
Root position
lateral +
Rosette position
basal +  and cauline +
Row atypical quantity
2 (4) +
Row quantity
1 +
Secondary branch height or length or size
short +
Secondary branch quantity
numerous +
Secretion condition
wet +
Secretion condition or texture
dry +
Secretion relief
papillate +
Secretion shape
clavate +  and globose +
Seed atypical length
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Seed atypical quantity
1 (160) +
Seed coloration
brown +, grayish +  and yellowish-brown brown or dark purplish +
Seed length
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Seed quantity
8 +  and numerous +
Seed relief
sculptured +  and smooth +
Seed shape
obovoid +
Seed size
reduced +
Seed width
0.1 cm1 mm <br />0.001 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
Sepal architecture or dehiscence
splitting +
Sepal arrangement or dehiscence
valvate +
Sepal atypical some measurement
3 cm30 mm <br />0.03 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
Sepal coloration
purple +, pink +, red +  and green +
Sepal duration
deciduous +
Sepal fusion
coherent +
Sepal orientation
reflexed +
Sepal quantity
4 +
Sepal some measurement
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Septum architecture
incomplete +
Septum arrangement
parietal +, axile +  and placentation +
Septum fragility
fragile +
Septum presence
absent +
Septum width
thin +
Series length or size
longer +
Series quantity
2 +
Series size
unequal +
Series variability
equal +
Set length or size
longer +
Set quantity
2 +
Set variability
equal +
Shoot derivation
adventitious +
Shoot orientation
arising +
Shrub architecture
unarmed +
Shrub growth form
not clonal +
Shrub habitat
aquatic +, amphibious +  and terrestrial +
Slit dehiscence or orientation
longitudinal +
Spike architecture
leafy +
Stamen quantity
8 +
Stamen size
in 2 unequal series +  and subequal +
Stamen size or quantity
2 times as many or as many as sepals +
Stem architecture
leafy +
Stem atypical some measurement
40 cm400 mm <br />0.4 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Stem growth form or orientation
decumbent +
Stem orientation
ascending +
Stem quantity
numerous +
Stem some measurement
3 cm30 mm <br />0.03 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Stigma architecture
peltate +
Stigma development
developing +
Stigma quantity
1 +
Stigma shape
divided +
Stipule architecture
petiolate +  and sessile +
Stipule duration
caducous +
Stipule position
intrapetiolar +
Stipule presence
absent +
Stipule size
small +
Style atypical some measurement
8 cm80 mm <br />0.08 m <br /> (9.8 cm98 mm <br />0.098 m <br />) +
Style pubescence
pubescent +  and glabrous +
Style quantity
1 +
Style some measurement
5.5 cm55 mm <br />0.055 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Subshrub architecture
unarmed +
Subshrub growth form
not clonal +
Subshrub habitat
aquatic +, amphibious +  and terrestrial +
Surface architecture
smooth +, reticulate +  and furrowed +
Surface architecture or coloration or relief
reticulate +
Surface architecture or shape
entire +
Surface condition
wet +
Surface duration
persisting +
Surface life cycle
anthesis +
Surface prominence
obscured +
Surface quantity
7 (?) +
Surface relief
rugose +
Surface shape
beaded +
Surface size or width
thickened +
Synonyms
Megapterium fremontii +
Taxon family
Onagraceae +
Taxon name
Oenothera macrocarpa subsp. fremontii +
Taxon parent
Oenothera macrocarpa +
Taxon rank
subspecies +
Tetrad arrangement
singly +
Tetrad dehiscence
3(-5)-aperturate +
Tip atypical some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Tip fusion
free +
Tip size
unequal +
Tip some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Viscin thread dehiscence or orientation
longitudinal +
Viscin thread fusion
united +
Volume
Volume 10 +
Wall texture
woody +  and hard +
Wing architecture
smooth +  and erose +
Wing architecture or relief
erose +
Wing condition or texture
dry +
Wing development
not developed +
Wing pubescence or texture
corky +
Wing relief
papillate +
Wing width
2mm +  and 5mm +