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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 fixation
versatile +
Anther some measurement
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Author
Warren L. Wagner +
Authority
Mackenzie +
Basal leaf arrangement
alternate +
Basal leaf position
cauline +
Basal leaf presence
absent +
Basal stem length
7 cm70 mm <br />0.07 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Basal stem width
0.7 cm7 mm <br />0.007 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Base coloration
red +  and green +
Base shape
pedicel-like +
Berry architecture or shape
nutlike +
Berry dehiscence
indehiscent +  and loculicidal +
Blade coloration
dark green +
Blade margin architecture or shape
serrate +
Blade margin shape
subentire +, dentate +, lobed to sinuate-dentate +  and lobed +
Blade reflectance
glossy +
Blade shape
very narrowly oblanceolate +  and narrowly oblanceolate linear-elliptic lanceolate or nearly linear +
Bract duration
persistent +
Branch orientation
arising +
Bud arrangement
divergent +
Bud diameter
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Bud orientation
erect +
Bud shape
hornlike +
Bud some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Capsule architecture
secund +
Capsule architecture or shape
nutlike +
Capsule architecture or structure in adjective form
4-locular +
Capsule coloration
rusty brown +, green +  and dull +
Capsule condition or texture
dry +
Capsule course
curved +
Capsule course or shape
sigmoid +
Capsule dehiscence
indehiscent +  and dehiscent +
Capsule diameter
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Capsule length
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Capsule orientation
spreading +
Capsule shape
narrowly lanceoloid +  and lanceoloid +
Capsule texture
woody +
Capsule width
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Carpel quantity
Many (?) +
Cauline stem length
6 cm60 mm <br />0.06 m <br /> (13 cm130 mm <br />0.13 m <br />) +
Cauline stem width
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Cel reproduction
vegetative +
Distribution
Md. +, Pa. +, Va. +  and W.Va. +
Elevation
150–700 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
2 cm20 mm <br />0.02 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
Floral-tube atypical some measurement
13.5 cm135 mm <br />0.135 m <br /> (16 cm160 mm <br />0.16 m <br />) +
Floral-tube course
straight +
Floral-tube duration
deciduous +
Floral-tube presence
absent +
Floral-tube pubescence
hispid +, lanate +  and glabrous +
Floral-tube quantity
, +
Floral-tube some measurement
3.2 cm32 mm <br />0.032 m <br /> (5.2 cm52 mm <br />0.052 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 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 sites on Devonian Brallier shale slopes, barrens, outcrops or adjacent roadsides in mid-Appalachian Allegheny Mountains. +
Hair height or length or size
short +
Hair position relational
interlocking +
Hair relief
pustulate +
Herb architecture
caulescent +
Herb duration
perennial +, short-lived +  and biennial +
Herb growth form
suffrutescent +
Herb pubescence
villous +  and strigillose +
Indusium architecture
peltate +
Indusium prominence
conspicuous +
Inflorescence architecture
unbranched +
Inflorescence course
curved +
Inflorescence position
axillary +
Inflorescence pubescence
villous +, puberulent +, glandular +  and glabrous +
Lateral root orientation
spreading +
Leaf-axil orientation
nodding +  and erect +
Leaf architecture
simple +
Leaf arrangement
alternate +
Leaf atypical some measurement
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Leaf condition
later +
Leaf duration
deciduous +
Leaf position
cauline +
Leaf presence
absent +
Leaf some measurement
3 cm30 mm <br />0.03 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Lobe arrangement or course or shape
linear +
Lobe quantity
4 (?) +
Locule arrangement or growth form
clustered +
Locule quantity
many +
Main-stem position or shape
distal +
Main-stem quantity
1/2 +
Margin architecture or shape
dentate +, remotely +  and entire +
Margin prominence or shape
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 +
Perianth position
epigynous +
Petal arrangement
imbricate +
Petal arrangement or shape
convolute +
Petal coloration
orange +, yellow +  and pale-yellow fading pale-yellow +
Petal presence
absent +
Petal quantity
4 +
Petal shape
obovate +  and obcordate +
Petal some measurement
2.5 cm25 mm <br />0.025 m <br /> (4.2 cm42 mm <br />0.042 m <br />) +
Phenology
Flowering (Jun–)Jul–Oct. +
Pollen-grain dehiscence or orientation
longitudinal +
Pollen arrangement
singly +
Pollen reproduction
fertile +
Polyad arrangement
singly +
Proximal part reproduction
sterile +
Publication title
Torreya +
Publication year
1904 +
Raphide quantity
abundant +
Reference
None +
Rosette position
basal +  and cauline +
Row atypical quantity
2 (4) +
Row quantity
2 +
Secretion condition
wet +
Secretion condition or texture
dry +
Secretion relief
papillate +
Secretion shape
clavate +  and globose +
Seed atypical quantity
1 (160) +
Seed coloration
black +  and dark-brown to almost +
Seed length
0.13 cm1.3 mm <br />0.0013 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
Seed quantity
numerous +
Seed relief
sculptured +  and smooth +
Seed shape
angled +  and prismatic +
Seed size
reduced +
Seed width
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
Sepal architecture or dehiscence
splitting +
Sepal arrangement
separate +  and separating +
Sepal arrangement or dehiscence
valvate +
Sepal coloration
flushed with red +, yellowish green +  and yellow +
Sepal duration
deciduous +
Sepal orientation
reflexed +
Sepal quantity
4 +
Sepal some measurement
2.7 cm27 mm <br />0.027 m <br /> (3.8 cm38 mm <br />0.038 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 development
developing +
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 +
Spike architecture or arrangement
lax +
Spike course
curved +
Spike density
dense +
Spike orientation
erect +
Spike shape
elongate +
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
with branches +  and unbranched +
Stem coloration
red +  and green +
Stem growth form or orientation
decumbent +
Stem orientation
erect +  and ascending +
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 pubescence
pubescent +  and glabrous +
Style quantity
1 +
Style some measurement
6 cm60 mm <br />0.06 m <br /> (8.5 cm85 mm <br />0.085 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 prominence or shape
flat +
Surface quantity
7 (?) +
Surface relief
pitted +
Surface shape
beaded +
Suture quantity
1 +
Synonyms
Oenothera argillicola var. pubescens +
Taxon family
Onagraceae +
Taxon name
Oenothera argillicola +
Taxon parent
Oenothera subsect. Oenothera +
Taxon rank
species +
Tetrad arrangement
singly +
Tetrad dehiscence
3(-5)-aperturate +
Tip fusion
free +
Tip orientation
ascending +
Tip position
subterminal +
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 condition or texture
dry +
Wing relief
papillate +
Wing width
thick +