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2n chromosome quantity
28 +
4-locular septum architecture
incomplete +
4-locular septum architecture or structure in adjective form
1-locular +
Androecium position
epigynous +
Anther fixation
versatile +
Anther some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Apex architecture or shape
emarginate +
Apex shape
tapering +  and rounded to truncate +
Author
Warren L. Wagner +
Authority
(Roth) W. L. Wagner +
Basal leaf arrangement
alternate +
Basal leaf position
cauline +
Basal leaf presence
absent +
Basal rosette length
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Basal rosette width
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Base coloration
pale green +  and yellow usually fading orange purple pale-yellow reddish or whitish +
Base reproduction
sterile +
Base shape
pedicel-like +
Basionyms
Oenothera tetragona +
Berry architecture or shape
nutlike +
Berry dehiscence
indehiscent +  and loculicidal +
Blade margin shape
dentate +, denticulate +, subentire +  and entire +
Blade shape
narrowly elliptic +  and broadly ovate +
Bud arrangement
connivent +
Bud orientation
spreading +
Bud shape
terete +
Capsule architecture
sessile +
Capsule architecture or shape
nutlike +
Capsule architecture or structure in adjective form
4-locular +
Capsule atypical length
1.7 cm17 mm <br />0.017 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Capsule atypical width
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Capsule condition or texture
dry +
Capsule course
straight +
Capsule dehiscence
indehiscent +  and dehiscent +
Capsule length
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
Capsule shape
oblong +  and oblong-ellipsoid +
Capsule texture
leathery +
Carpel quantity
Many (?) +
Cel reproduction
vegetative +
Distalmost node quantity
few +
Distribution
N.S. +, Ont. +, Que. +, Ala. +, Conn. +, Del. +, D.C. +, Ga. +, Ill. +, Ind. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Mo. +, N.H. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Va. +  and W.Va. +
Elevation
(100–)300–1700 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 fixation
basifixed +  and versatile +
Filament fusion
distinct +
Filament some measurement
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Floral-tube duration
deciduous +
Floral-tube presence
absent +
Floral-tube pubescence
hispid +, lanate +  and glabrous +
Floral-tube quantity
, +
Floral-tube some measurement
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flower architecture
zygomorphic +  and actinomorphic +
Flower architecture or arrangement or growth form
solitary +
Flower odor
scented +
Flower part duration
deciduous +
Flower part life cycle
anthesis +
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
Open meadows, stream margins, edges of woods, open woods. +
Hair height or length or size
short +
Hair position relational
interlocking +
Herb architecture
caulescent +
Herb duration
perennial +
Herb growth form
suffrutescent +
Herb pubescence
villous +, strigillose +, glabrous +, puberulent +  and glandular +
Herb texture
fleshy +
Indusium architecture
peltate +
Indusium prominence
conspicuous +
Inflorescence orientation
nodding +  and erect +
Inflorescence position
axillary +
Lateral root orientation
spreading +
Leaf-axil orientation
nodding +  and erect +
Leaf architecture
simple +
Leaf arrangement
alternate +
Leaf atypical some measurement
10 cm100 mm <br />0.1 m <br /> (13 cm130 mm <br />0.13 m <br />) +
Leaf condition
later +
Leaf duration
deciduous +
Leaf length
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Leaf position
basal +  and cauline +
Leaf presence
absent +
Leaf some measurement
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Leaf width
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Lobe arrangement or course or shape
linear +
Lobe quantity
4 (?) +
Locule arrangement or growth form
clustered +
Locule quantity
many +
Margin position
cauline +
Margin shape
dentate +  and remotely denticulate +
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 +
Perianth position
epigynous +
Petal arrangement
imbricate +
Petal arrangement or shape
convolute +
Petal atypical some measurement
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Petal character
not color +
Petal coloration
pale +  and bright-yellow fading pale-pink orangish pink or yellow +
Petal presence
absent +
Petal quantity
4 +
Petal shape
obcordate +  and obovate +
Petal some measurement
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Petiole atypical some measurement
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Petiole some measurement
0.1 cm1 mm <br />0.001 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Phenology
Flowering Apr–Aug(–Sep). +
Pollen-grain dehiscence or orientation
longitudinal +
Pollen arrangement
singly +
Pollen reproduction
fertile +
Polyad arrangement
singly +
Proximal part reproduction
sterile +
Publication title
PhytoKeys +
Publication year
2014 +
Raphide quantity
abundant +
Reference
None +
Rosette life cycle
withered +
Rosette position
basal +  and cauline +
Row atypical quantity
2 (4) +
Row quantity
2 +  and 1 +
Secretion condition
wet +
Secretion condition or texture
dry +
Secretion relief
papillate +
Secretion shape
clavate +  and globose +
Seed arrangement or growth form
clustered +
Seed atypical quantity
1 (160) +
Seed length
1 cm10 mm <br />0.01 m <br /> (?) +
Seed quantity
numerous +
Seed relief
sculptured +  and smooth +
Seed shape
ovoid +
Seed size
reduced +
Seed width
0.5 cm5 mm <br />0.005 m <br /> (?) +
Sepal architecture or dehiscence
splitting +
Sepal arrangement
separating +
Sepal arrangement or dehiscence
valvate +
Sepal coloration
purple +, pink +, red +  and green +
Sepal duration
deciduous +
Sepal fusion
coherent +
Sepal orientation
reflexed +
Sepal quantity
4 +
Sepal some measurement
0.8 cm8 mm <br />0.008 m <br /> (2.2 cm22 mm <br />0.022 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 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
unbranched +  and branched +
Stem atypical some measurement
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Stem growth form or orientation
decumbent +
Stem orientation
erect +  and decumbent +
Stem some measurement
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
Stigma architecture
peltate +
Stigma development
developing +
Stigma quantity
1 +
Stigma shape
divided +
Stipe architecture
4-winged +
Stipe atypical length
1.7 cm17 mm <br />0.017 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Stipe atypical some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Stipe atypical width
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Stipe length
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
Stipe position
middle +
Stipe shape
4-angled +
Stipe some measurement
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Stipe width
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Stipule architecture
petiolate +  and sessile +
Stipule duration
caducous +
Stipule position
intrapetiolar +
Stipule presence
absent +
Stipule size
small +
Style pubescence
pubescent +  and glabrous +
Style quantity
1 +
Style some measurement
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 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 pubescence
glaucous +
Surface quantity
7 (?) +
Surface relief
papillose +
Surface shape
beaded +
Synonyms
Kneiffia fraseri +, K. fruticosa var. differta +, K. glauca +, K. latifolia +, K. serotina +, K. tetragona +, K. tetragona var. hybrida +, O. ambigua +, O. canadensis +, O. fraseri +, O. fruticosa var. ambigua +, O. fruticosa var. differta +, O. fruticosa var. fraseri +, O. fruticosa subsp. glauca +, O. fruticosa var. glauca +, O. fruticosa var. incana +, O. fruticosa var. maculata +, O. glauca +, O. glauca var. fraseri +, O. hybrida +, O. hybrida var. ambigua +, O. incana +, O. serotina +, O. tetragona var. fraseri +, O. tetragona subsp. glauca +, O. tetragona var. hybrida +  and O. tetragona var. latifolia +
Taxon family
Onagraceae +
Taxon name
Oenothera fruticosa subsp. tetragona +
Taxon parent
Oenothera fruticosa +
Taxon rank
subspecies +
Tetrad arrangement
singly +
Tetrad dehiscence
3(-5)-aperturate +
Tip atypical some measurement
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Tip fusion
free +
Tip some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Valve midrib architecture
sessile +
Valve midrib dehiscence
dehiscent +
Valve midrib prominence
raised +
Viscin thread dehiscence or orientation
longitudinal +
Viscin thread fusion
united +
Volume
Volume 10 +
Wall texture
woody +  and hard +
Wing architecture
smooth +  and erose +
Wing condition or texture
dry +
Wing relief
papillate +
Wing width
thick +