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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
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Anther fixation
versatile +
Anther some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Apex shape
acute +  and rounded +
Author
Warren L. Wagner +
Authority
Munz +
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
Pachylophus +
Beak length
0 (1/2) +
Beak reproduction
sterile +
Beak some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Berry architecture or shape
nutlike +
Berry dehiscence
indehiscent +  and loculicidal +
Blade margin shape
subentire +, serrate +, usually coarsely dentate +  and pinnatifid +
Blade shape
oblanceolate +
Bud orientation
recurved +
Bud shape
quadrangular +
Capsule architecture
thick-walled +
Capsule architecture or shape
nutlike +
Capsule architecture or structure in adjective form
4-locular +
Capsule condition or texture
dry +
Capsule course
straight +
Capsule dehiscence
indehiscent +  and dehiscent +
Capsule length
1.2 cm12 mm <br />0.012 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
Capsule shape
tapering +, 4-angled +, ellipsoid-ovoid +  and ovoid +
Capsule texture
woody +
Capsule width
0.6 cm6 mm <br />0.006 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Carpel quantity
Many (?) +
Cavity architecture
empty +
Cavity size
large +
Cel reproduction
vegetative +
Cell size
large +
Cell texture
spongy +
Chamber architecture
hollow +
Distribution
Ariz. +, Calif. +  and Nev. +
Elevation
400–1700 m. +
Embryo-sac coating
oily +
Embryo-sac course
straight +
Embryo-sac presence
absent +
Embryo coating
oily +
Embryo course
straight +
Embryo presence
absent +
Embryo quantity
1/2 +
Endosperm coating
oily +
Endosperm course
straight +
Endosperm presence
absent +
Epidermis coloration
whitish +  and green +
Epidermis relief
exfoliating +
Filament architecture
dithecal +
Filament atypical some measurement
0.75 cm7.5 mm <br />0.0075 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Filament fixation
basifixed +  and versatile +
Filament fusion
distinct +
Filament some measurement
0.52 cm5.2 mm <br />0.0052 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
Floral-tube atypical some measurement
3.7 cm37 mm <br />0.037 m <br /> (4.7 cm47 mm <br />0.047 m <br />) +
Floral-tube duration
deciduous +
Floral-tube orientation
recurved +
Floral-tube presence
absent +
Floral-tube pubescence
hispid +, lanate +  and glabrous +
Floral-tube quantity
, +
Floral-tube some measurement
3 cm30 mm <br />0.03 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
Flower architecture
zygomorphic +  and actinomorphic +
Flower architecture or arrangement or growth form
solitary +
Flower atypical quantity
3 (10) +
Flower odor
unscented +
Flower part duration
deciduous +
Flower part life cycle
anthesis +
Flower quantity
1 +  and 3 +
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
Exposed calcareous slopes, crevices in limestone, dolomite, or loose talus, sandy arroyos, sandstone, granitic crevices, volcanic cinders in Mojave Desert or Great Basin scrub communities, rarely in arid juniper woodlands. +
Hair height or length or size
short +
Hair position relational
interlocking +
Herb architecture
short-caulescent +  and acaulescent +
Herb architecture or function or pubescence
glandular +
Herb duration
annual +
Herb growth form
suffrutescent +
Herb pubescence
hirsute +  and puberulent +
Herb season
spring +  and winter +
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
13 cm130 mm <br />0.13 m <br /> (19.5 cm195 mm <br />0.195 m <br />) +
Leaf atypical some measurement
26 cm260 mm <br />0.26 m <br /> (36 cm360 mm <br />0.36 m <br />) +
Leaf atypical width
2.3 cm23 mm <br />0.023 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
Leaf condition
later +
Leaf duration
deciduous +
Leaf length
2.5 cm25 mm <br />0.025 m <br /> (13 cm130 mm <br />0.13 m <br />) +
Leaf position
cauline +
Leaf presence
absent +
Leaf some measurement
1.7 cm17 mm <br />0.017 m <br /> (26 cm260 mm <br />0.26 m <br />) +
Leaf width
0.6 cm6 mm <br />0.006 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
Lobe arrangement or course or shape
linear +
Lobe quantity
4 (?) +
Locule arrangement or growth form
clustered +
Locule quantity
many +
Margin shape
sinuate +, lyrate-pinnatifid +  and subentire +
Membrane coloration or reflectance
translucent +
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 some measurement
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Perianth position
epigynous +
Petal arrangement
imbricate +
Petal arrangement or shape
convolute +
Petal atypical some measurement
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Petal coloration
fading pale-pink +  and white +
Petal presence
absent +
Petal quantity
4 +
Petal shape
obcordate +  and obovate +
Petal some measurement
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Petiole some measurement
0.5 cm5 mm <br />0.005 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
Phenology
Flowering Mar–May. +
Pollen-grain dehiscence or orientation
longitudinal +
Pollen arrangement
singly +
Pollen reproduction
fertile +
Polyad arrangement
singly +
Proximal part reproduction
sterile +
Publication title
Leafl. W. Bot. +
Publication year
1941 +
Raphide quantity
abundant +
Reference
None +
Ridge fusion
distinct +
Ridge shape
sinuate +
Ridge size or width
thickened +
Root position
lateral +
Rosette position
basal +  and cauline +
Row arrangement
adjacent +
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 length
0.25 cm2.5 mm <br />0.0025 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
Seed quantity
5 +  and numerous +
Seed relief
sculptured +  and smooth +
Seed shape
obovoid +
Seed size
reduced +
Seed width
0.11 cm1.1 mm <br />0.0011 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
Sepal arrangement
in pairs +  and separating +
Sepal arrangement or dehiscence
valvate +
Sepal coloration
purple +, pink +, red +  and green +
Sepal duration
deciduous +
Sepal orientation
reflexed +
Sepal quantity
4 +
Sepal some measurement
0.45 cm4.5 mm <br />0.0045 m <br /> (1.2 cm12 mm <br />0.012 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
unbranched +
Stem growth form or orientation
decumbent +
Stem orientation
ascending +
Stem quantity
1 +  and several +
Stem some measurement
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 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
4.5 cm45 mm <br />0.045 m <br /> (5.6 cm56 mm <br />0.056 m <br />) +
Style pubescence
pubescent +  and glabrous +
Style quantity
1 +
Style some measurement
3.5 cm35 mm <br />0.035 m <br /> (4.5 cm45 mm <br />0.045 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
papillose +
Surface shape
beaded +
Synonyms
Oenothera +  and Oenothera subg. Pachylophus +
Taxon family
Onagraceae +
Taxon name
Oenothera cavernae +
Taxon parent
Oenothera sect. Pachylophus +
Taxon rank
species +
Tetrad arrangement
singly +
Tetrad dehiscence
3(-5)-aperturate +
Tip fusion
free +
Tubercle fusion
distinct +
Tubercle shape
sinuate +
Valve margin architecture
pedicellate +  and sessile +
Valve margin dehiscence
dehiscent +
Valve margin length
1/3 (7/8) +
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 +