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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
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Anther fixation
versatile +
Anther some measurement
0.4 cm4 mm <br />0.004 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Apex shape
acute +  and obtuse or rounded +
Author
Warren L. Wagner +
Authority
Nuttall +
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
Lavauxia spach +
Beak height or length or size
short +
Berry architecture or shape
nutlike +
Berry dehiscence
indehiscent +  and loculicidal +
Blade margin shape
lobed +  and dentate or subentire +
Blade shape
oblanceolate +  and elliptic +
Bud orientation
erect +
Bud shape
quadrangular +
Capsule architecture
winged +
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
indehiscent +  and dehiscent +
Capsule shape
rhombic-obovoid +
Capsule texture
woody +
Carpel quantity
Many (?) +
Cel reproduction
vegetative +
Distribution
Ala. +, Ark. +, Colo. +, D.C. +, Ill. +, Ind. +, Kans. +, Ky. +, Md. +, Mo. +, N.Mex. +, Ohio +, Okla. +, Pa. +, Tenn. +, Tex. +, Va. +, Mexico (Baja California) +, Mexico (Chihuahua) +  and Mexico (Nuevo León) +
Elevation
300–1900 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
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Filament fixation
basifixed +  and versatile +
Filament fusion
distinct +
Filament some measurement
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Floral-tube atypical some measurement
9.5 cm95 mm <br />0.095 m <br /> (13.8 cm138 mm <br />0.138 m <br />) +
Floral-tube duration
deciduous +
Floral-tube presence
absent +
Floral-tube pubescence
hispid +, lanate +  and glabrous +
Floral-tube quantity
, +
Floral-tube some measurement
2.8 cm28 mm <br />0.028 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
Flower architecture
zygomorphic +  and actinomorphic +
Flower architecture or arrangement or growth form
solitary +
Flower odor
unscented +
Flower part duration
deciduous +
Flower part life cycle
anthesis +
Flower quantity
1 +  and 4 +
Flower reproduction
bisexual +
Flowers petal coloration
purple +  and lavender +
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
Scattered to common in clay, sandy or rocky soil, playas, floodplains, creek beds, slopes and flats, moist sites, disturbed sites, roadsides, old fields, in Larrea deserts, prairies, glades. +
Hair height or length or size
short +
Hair position relational
interlocking +
Hair prominence
predominant +
Hair pubescence
hirsute +  and glabrate +
Herb architecture
short-caulescent +
Herb architecture or function or pubescence
glandular +
Herb duration
biennial +  and winter-annual +
Herb growth form
suffrutescent +
Herb pubescence
puberulent +  and strigillose +
Indusium architecture
peltate +
Indusium prominence
conspicuous +
Inflorescence position
axillary +
Lateral root orientation
spreading +
Leaf-axil orientation
nodding +  and erect +
Leaf architecture
simple +
Leaf arrangement
alternate +
Leaf atypical length
25 cm250 mm <br />0.25 m <br /> (32 cm320 mm <br />0.32 m <br />) +
Leaf atypical some measurement
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Leaf atypical width
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Leaf condition
later +
Leaf duration
deciduous +
Leaf length
6 cm60 mm <br />0.06 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Leaf position
cauline +
Leaf presence
absent +
Leaf some measurement
8 cm80 mm <br />0.08 m <br /> (36 cm360 mm <br />0.36 m <br />) +
Lobe arrangement or course or shape
linear +
Lobe quantity
4 (?) +
Locule arrangement or growth form
clustered +
Locule quantity
3 +
Margin shape
subentire +  and pinnatifid +
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 +
Pair arrangement
separating +
Pair life cycle
anthesis +
Perianth position
epigynous +
Petal arrangement
imbricate +
Petal arrangement or shape
convolute +
Petal atypical some measurement
3 cm30 mm <br />0.03 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
Petal coloration
orange +, fading pale +  and pale-yellow +
Petal coloration or odor
lavender +
Petal condition
drying +
Petal presence
absent +
Petal quantity
4 +
Petal shape
obcordate +  and obovate +
Petal some measurement
1.2 cm12 mm <br />0.012 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Petiole atypical some measurement
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Petiole some measurement
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Phenology
Flowering (Feb–)Mar–May(–Jul). +
Pollen-grain dehiscence or orientation
longitudinal +
Pollen arrangement
singly +
Polyad arrangement
singly +
Proximal part reproduction
sterile +
Publication title
J. Acad. Nat. Sci. Philadelphia +
Publication year
1821 +
Raphide quantity
abundant +
Reference
None +
Root position
lateral +
Rosette position
basal +  and cauline +
Row atypical quantity
2 (4) +
Row fusion
distinct +
Row quantity
2 +
Secretion condition
wet +
Secretion condition or texture
dry +
Secretion relief
papillate +
Secretion shape
clavate +  and globose +
Seed architecture
winged +
Seed arrangement
adjacent +
Seed atypical quantity
1 (160) +
Seed atypical some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
Seed quantity
numerous +
Seed relief
sculptured +  and smooth +
Seed shape
cuneiform +
Seed size
reduced +
Seed some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Sepal architecture or dehiscence
splitting +
Sepal arrangement or dehiscence
valvate +
Sepal atypical some measurement
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Sepal coloration
purple +, pink +, red +  and green +
Sepal duration
deciduous +
Sepal fusion
coherent +
Sepal orientation
reflexed +
Sepal quantity
4 +
Sepal some measurement
1 cm10 mm <br />0.01 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 growth form or orientation
decumbent +
Stem orientation
ascending +
Stem quantity
1 +  and several +
Stem some measurement
0 cm0 mm <br />0 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Stigma architecture
peltate +
Stigma development
developing +
Stigma quantity
1 +
Stigma shape
rounded +
Stipule architecture
petiolate +  and sessile +
Stipule duration
caducous +
Stipule position
intrapetiolar +
Stipule presence
absent +
Stipule size
small +
Style atypical some measurement
1.15 cm11.5 mm <br />0.0115 m <br /> (1.63 cm16.3 mm <br />0.0163 m <br />) +
Style pubescence
pubescent +  and glabrous +
Style quantity
1 +
Style some measurement
0.42 cm4.2 mm <br />0.0042 m <br /> (1.15 cm11.5 mm <br />0.0115 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 shape
entire +
Surface condition
wet +
Surface duration
persisting +
Surface life cycle
anthesis +
Surface prominence
obscured +
Surface quantity
7 (?) +
Surface relief
rugose +, papillose +  and non-papillate +
Surface shape
beaded +
Synonyms
Lavauxiahamata wooton +, L. triloba +, L. watsonii +, Oenothera hamata +, O. rhizocarpa +, O. roemeriana +, O. triloba var. parviflora +  and O. triloba +
Taxon family
Onagraceae +
Taxon name
Oenothera triloba +
Taxon parent
Oenothera subsect. Lavauxia +
Taxon rank
species +
Tetrad arrangement
singly +
Tetrad dehiscence
3(-5)-aperturate +
Tip fusion
free +
Tip size
subequal +
Tip some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Tooth atypical length
2.5 cm25 mm <br />0.025 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
Tooth length
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Tooth shape
hooked +
Tooth width
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Valve surface architecture or coloration or relief
reticulate +
Valve surface dehiscence
dehiscent +
Valve surface length
1/8 (1/3) +
Viscin thread dehiscence or orientation
longitudinal +
Viscin thread fusion
united +
Volume
Volume 10 +
Wall texture
woody +  and hard +
Wing architecture
sessile +
Wing condition or texture
dry +
Wing dehiscence
dehiscent +
Wing relief
papillate +
Wing shape
triangular +
Wing size
constricted +
Wing width
5mm +  and 10mm +